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Operating Instructions Radar sensor for continuous level measurement of bulk solids VEGAPULS 68 4 … 20 mA/HART two-wire Document ID: 36535 Contents Contents About this document 1.1 Function ........................................................................................................................... 4 1.2 Target group ..................................................................................................................... 4 1.3 Symbolism used ............................................................................................................... 4 2 For your safety 2.1 Authorised personnel ....................................................................................................... 5 2.2 Appropriate use ................................................................................................................ 5 2.3 Warning about incorrect use............................................................................................. 5 2.4 General safety instructions ............................................................................................... 5 2.5 CE conformity................................................................................................................... 6 2.6 NAMUR recommendations .............................................................................................. 6 2.7 Radio license for Europe .................................................................................................. 6 2.8 Radio license for USA/Canada ......................................................................................... 6 2.9 Environmental instructions ............................................................................................... 7 3 Product description 3.1 Configuration .................................................................................................................... 8 3.2 Principle of operation........................................................................................................ 9 3.3 Packaging, transport and storage ................................................................................... 10 3.4 Accessories and replacement parts ............................................................................... 10 4 Mounting 4.1 General instructions ....................................................................................................... 13 4.2 Mounting preparations - Horn antenna ........................................................................... 13 4.3 Mounting preparations - Parabolic antenna .................................................................... 14 4.4 Mounting instructions ..................................................................................................... 15 5 Connecting to power supply 5.1 Preparing the connection ............................................................................................... 28 5.2 Connecting ..................................................................................................................... 29 5.3 Wiring plan, single chamber housing.............................................................................. 30 5.4 Wiring plan, double chamber housing ............................................................................ 31 5.5 Wiring plan, double chamber housing Ex d ia ................................................................ 33 5.6 Double chamber housing with DIS-ADAPT .................................................................... 34 5.7 Wiring plan - version IP 66/IP 68, 1 bar........................................................................... 35 5.8 Switch-on phase............................................................................................................. 35 6 Set up with the display and adjustment module 6.1 Insert display and adjustment module ............................................................................ 36 6.2 Adjustment system ......................................................................................................... 37 6.3 Parameter adjustment .................................................................................................... 38 6.4 Saving the parameter adjustment data ........................................................................... 52 7 Setup with PACTware 7.1 Connect the PC .............................................................................................................. 53 7.2 Parameter adjustment .................................................................................................... 54 7.3 Saving the parameter adjustment data ........................................................................... 55 8 Set up with other systems 8.1 DD adjustment programs ............................................................................................... 56 8.2 Field Communicator 375, 475 ........................................................................................ 56 2 VEGAPULS 68 • 4 … 20 mA/HART two-wire 36535-EN-140209 1 Contents 9 Diagnosis, asset management and service 9.1 Maintenance .................................................................................................................. 57 9.2 Measured value and event memory ............................................................................... 57 9.3 Asset Management function........................................................................................... 58 9.4 Rectify faults ................................................................................................................... 61 9.5 Exchanging the electronics module ................................................................................ 65 9.6 Software update ............................................................................................................. 65 9.7 How to proceed if a repair is needed .............................................................................. 65 10 Dismounting 10.1 Dismounting steps.......................................................................................................... 67 10.2 Disposal ......................................................................................................................... 67 36535-EN-140209 11 Supplement 11.1 Technical data ................................................................................................................ 68 11.2 Dimensions .................................................................................................................... 76 Safety instructions for Ex areas PleasenotetheEx-specificsafetyinformationforinstallationandoperation in Ex areas. These safety instructions are part of the operating instructions manual and come with the Ex-approved instruments. Editing status: 2014-01-28 VEGAPULS 68 • 4 … 20 mA/HART two-wire 3 1 About this document 1 About this document 1.1 Function 1.2 Target group 1.3 Symbolism used This operating instructions manual provides all the information you need for mounting, connection and setup as well as important instructionsformaintenanceandfaultrectification.Pleasereadthisinformation before putting the instrument into operation and keep this manual accessible in the immediate vicinity of the device. This operating instructions manual is directed to trained specialist personnel. The contents of this manual should be made available to these personnel and put into practice by them. Information, tip, note This symbol indicates helpful additional information. Caution: If this warning is ignored, faults or malfunctions can result. Warning: If this warning is ignored, injury to persons and/or serious damage to the instrument can result. Danger: If this warning is ignored, serious injury to persons and/or destruction of the instrument can result. • → 1 Ex applications This symbol indicates special instructions for Ex applications. List The dot set in front indicates a list with no implied sequence. Action This arrow indicates a single action. Sequence of actions Numbers set in front indicate successive steps in a procedure. Battery disposal This symbol indicates special information about the disposal of batteries and accumulators. 36535-EN-140209 4 VEGAPULS 68 • 4 … 20 mA/HART two-wire 2 For your safety 2 2.1 For your safety Authorised personnel All operations described in this operating instructions manual must be carried out only by trained specialist personnel authorised by the plant operator. During work on and with the device the required personal protective equipment must always be worn. 2.2 Appropriate use VEGAPULS 68 is a sensor for continuous level measurement. Youcanfinddetailedinformationabouttheareaofapplicationin chapter "Product description". Operational reliability is ensured only if the instrument is properly usedaccordingtothespecificationsintheoperatinginstructions manual as well as possible supplementary instructions. 2.3 Warning about incorrect use 2.4 General safety instructions Inappropriate or incorrect use of the instrument can give rise to application-specifichazards,e.g.vesseloverfillordamagetosystem components through incorrect mounting or adjustment. This is a state-of-the-art instrument complying with all prevailing regulations and guidelines. The instrument must only be operated in a technicallyflawlessandreliablecondition.Theoperatorisresponsible for the trouble-free operation of the instrument. During the entire duration of use, the user is obliged to determine the compliance of the necessary occupational safety measures with the current valid rules and regulations and also take note of new regulations. The safety instructions in this operating instructions manual, the national installation standards as well as the valid safety regulations and accident prevention rules must be observed by the user. For safety and warranty reasons, any invasive work on the device beyond that described in the operating instructions manual may be carried out only by personnel authorised by the manufacturer. Arbitraryconversionsormodificationsareexplicitlyforbidden. 36535-EN-140209 The safety approval markings and safety tips on the device must also be observed. Depending on the instrument version, the emitting frequencies are in the C or K band range. The low emitting frequencies are far below the internationally approved limit values. When used correctly, there is no danger to health. VEGAPULS 68 • 4 … 20 mA/HART two-wire 5 2 For your safety 2.5 CE conformity ThedevicefulfillsthelegalrequirementsoftheapplicableECguidelines.ByaffixingtheCEmarking,weconfirmsuccessfultestingofthe product. YoucanfindtheCECertificateofConformityinthedownloadsection of our homepage. Electromagnetic compatibility Instruments in four-wire or Ex-d-ia version are designed for use in an industrial environment. Nevertheless, electromagnetic interference from electrical conductors and radiated emissions must be taken into account, as is usual with class A instruments according to EN 613261.Iftheinstrumentisusedinadifferentenvironment,theelectromagnetic compatibility to other instruments must be ensured by suitable measures. 2.6 NAMUR recommendations NAMUR is the automation technology user association in the process industry in Germany. The published NAMUR recommendations are acceptedasthestandardinfieldinstrumentation. ThedevicefulfillstherequirementsofthefollowingNAMURrecommendations: • • • • NE 21 – Electromagnetic compatibility of equipment NE 43 – Signal level for malfunction information from measuring transducers NE53–Compatibilityoffielddevicesanddisplay/adjustment components NE107–Self-monitoringanddiagnosisoffielddevices For further information see www.namur.de. 2.7 Radio license for Europe 2.8 Radio license for USA/Canada The instrument is approved according to EN 302372-1/2 (2006-04) for use in closed vessels. The instrument is in conformity with part 15 of the FCC regulations. Take note of the following two regulations: • • The instrument must not cause any interfering emissions The device must be insensitive to interfering immissions, including those that may cause undesirable operating conditions Modificationsnotexpresslyapprovedbythemanufacturerwillleadto expiry of the operating licence according to FCC/IC. The instrument may only be used in closed vessels made of metal, concrete,orfibre-reinforcedplastic. 6 VEGAPULS 68 • 4 … 20 mA/HART two-wire 36535-EN-140209 The instrument is in conformity with RSS-210 of the IC regulations. 2 For your safety 2.9 Environmental instructions Protection of the environment is one of our most important duties. That is why we have introduced an environment management system with the goal of continuously improving company environmental protection.Theenvironmentmanagementsystemiscertifiedaccording to DIN EN ISO 14001. Pleasehelpusfulfillthisobligationbyobservingtheenvironmental instructions in this manual: Chapter "Packaging, transport and storage" Chapter "Disposal" 36535-EN-140209 • • VEGAPULS 68 • 4 … 20 mA/HART two-wire 7 3 Product description 3 Type label Product description 3.1 Configuration Thetypelabelcontainsthemostimportantdataforidentificationand use of the instrument: 1 17 16 2 3 15 4 5 6 7 8 9 13 10 11 14 12 Fig. 1: Layout of the type label (example) 1 Instrument type 2 Product code 3 Approvals 4 Power supply and signal output, electronics 5 Protection rating 6 Measuring range 7 Process and ambient temperature, process pressure 8 Material, wetted parts 9 Hardware and software version 10 Order number 11 Serial number of the instrument 12 Data-Matrix-Code for Smartphone-App 13 Symbol of the device protection class 14 ID numbers, instrument documentation 15 Reminder to observe the instrument documentation 16 NotifiedauthorityforCEmarking 17 Approval directive Serial number - Instrument search The type label contains the serial number of the instrument. With it youcanfindthefollowinginstrumentdataonourhomepage: • • • • Go to www.vega.com, "VEGATools" and "Instrument search". Enter the serial number. Alternatively, you can access the data via your smartphone: 8 VEGAPULS 68 • 4 … 20 mA/HART two-wire 36535-EN-140209 • • Product code (HTML) Delivery date (HTML) Order-specificinstrumentfeatures(HTML) Operating instructions and quick setup guide at the time of shipment (PDF) Order-specificsensordataforanelectronicsexchange(XML) Testcertificate(PDF)-optional 3 Product description • • • Download the smartphone app "VEGATools" from the "Apple App Store" or the "GooglePlayStore" Scan the Data Matrix code on the type label of the instrument or Enter the serial number manually in the app Scope of this operating instructions manual This operating instructions manual applies to the following instrument versions: Scope of delivery The scope of delivery encompasses: • • • • • Application area Hardware version from 2.1.0 Software version from 4.5.1 Radar sensor Documentation – Quick setup guide VEGAPULS 68 – Testcertificatemeasuringaccuracy(optional) – Operating instructions manual "Display and adjustment module" (optional) – Supplementary instructions "GSM/GPRSradiomodule" (optional) – Supplementary instructions manual "Heating for display and adjustment module" (optional) – Supplementary instructions manual "Plug connector for continuously measuring sensors" (optional) – Ex-specific"Safety instructions" (with Ex versions) – ifnecessary,furthercertificates DVD "Software & Documents", containing – Operating instructions – Safety instructions – PACTware/DTM-Collection – Driver software 3.2 Principle of operation The VEGAPULS 68 is a radar sensor for continuous measurement of bulk solids also under arduous process conditions and large measuring ranges. It the ideal solution for level measurement in high silos, largebunkers,stonecrushersandmeltingfurnaces.Withdifferent antenna versions and materials, this sensor is the optimum solution for virtually all applications and processes. The instrument is also suitable for applications in liquids. Dependentontheapplicationrange,differentversionsareused: 36535-EN-140209 • • • Small silos and vessels, measurement of virtually all bulk solids: Horn antenna Largesilosandvessels,measurementofbulksolidswithlowεr value: Parabolic antenna Liquids: Parabolic antenna Theinstrumentcanbeusedwithproductswithanεrvalue≥1.5.The actually achievable value depends on the measuring conditions and the antenna system. VEGAPULS 68 • 4 … 20 mA/HART two-wire 9 3 Product description Functional principle The antenna of the radar sensor emits short radar pulses with a durationofapprox.1ns.Thesepulsesarereflectedbytheproduct and received by the antenna as echoes. The transit time of the radar pulses from emission to reception is proportional to the distance and hence to the level. The determined level is converted into an appropriate output signal and outputted as measured value. Packaging Your instrument was protected by packaging during transport. Its capacity to handle normal loads during transport is assured by a test based on ISO 4180. 3.3 Packaging, transport and storage The packaging of standard instruments consists of environmentfriendly, recyclable cardboard. For special versions, PE foam or PE foil is also used. Dispose of the packaging material via specialised recycling companies. Transport Transport must be carried out in due consideration of the notes on the transport packaging. Nonobservance of these instructions can cause damage to the device. Transport inspection The delivery must be checked for completeness and possible transit damage immediately at receipt. Ascertained transit damage or concealed defects must be appropriately dealt with. Storage Up to the time of installation, the packages must be left closed and stored according to the orientation and storage markings on the outside. Unless otherwise indicated, the packages must be stored only under the following conditions: Storage and transport temperature PLICSCOM • • • • • • • Not in the open Dry and dust free Not exposed to corrosive media Protected against solar radiation Avoiding mechanical shock and vibration Storage and transport temperature see chapter "Supplement Technicaldata-Ambientconditions" Relative humidity 20 … 85 % 3.4 Accessories and replacement parts The display and adjustment module PLICSCOM is used for measured value indication, adjustment and diagnosis. It can be inserted into the sensor or the external display and adjustment unit and removed at any time. VEGACONNECT 10 The interface adapter VEGACONNECT enables the connection of communication-capable instruments to the USB interface of a PC. For VEGAPULS 68 • 4 … 20 mA/HART two-wire 36535-EN-140209 Youcanfindfurtherinformationintheoperatinginstructions"Display and adjustment module PLICSCOM" (Document-ID 27835). 3 Product description parameter adjustment of these instruments, the adjustment software PACTware with VEGA-DTM is required. Youcanfindfurtherinformationintheoperatinginstructions"Interface adapterVEGACONNECT" (Document-ID 32628). VEGADIS 81 The VEGADIS 81 is an external display and adjustment unit for VEGA plics® sensors. For sensors with double chamber housing the interface adapter "DISADAPT" is also required for VEGADIS 81. Youcanfindfurtherinformationintheoperatinginstructions"VEGADIS81" (Document-ID 43814). DIS-ADAPT The adapter "DIS-ADAPT" is an accessory part for sensors with double chamber housings. It enables the connection of VEGADIS 81 to the sensor housing via an M12 x 1 plug. Youcanfindfurtherinformationinthesupplementaryinstructions "AdapterDISADAPT" (Document-ID 45250). VEGADIS 62 VEGADIS 62 is suitable for measured value indication and adjustment of sensors with HART protocol. It is looped into the 4 … 20 mA/HART signal cable. Youcanfindfurtherinformationintheoperatinginstructions"VEGADIS62" (Document-ID 36469). PLICSMOBILE T61 The PLICSMOBILE T61 is an external GSM/GPRS radio unit for transmission of measured values and for remote parameter adjustment of plics® sensors. The adjustment is carried out via PACTware/ DTM by using the integrated USB connection. Youcanfindfurtherinformationinthesupplementaryinstructions "PLICSMOBILET61" (Document-ID 37700). PLICSMOBILE The PLICSMOBILE is an internal GSM/GPRS radio unit for transmission of measured values and for remote parameter adjustment of plics® sensors. The adjustment is carried out via PACTware/DTM by using the integrated USB connection. Youcanfindfurtherinformationinthesupplementaryinstructions "PLICSMOBILEGSM/GPRSradiomodule" (Document-ID 36849). Protective cap The protective cover protects the sensor housing against soiling and intense heat from solar radiation. Youwillfindadditionalinformationinthesupplementaryinstructions manual "Protective cover" (Document-ID 34296). 36535-EN-140209 Flanges Screwedflangesareavailableindifferentversionsaccordingtothe following standards: DIN 2501, EN 1092-1, BS 10, ANSI B 16.5, JIS B 2210-1984, GOST 12821-80. Youcanfindadditionalinformationinthesupplementaryinstructions manual "FlangesaccordingtoDIN-EN-ASME-JIS" (Document-ID 31088). VEGAPULS 68 • 4 … 20 mA/HART two-wire 11 3 Product description Electronics module The electronics module VEGAPULS series 60 is a replacement part forradarsensorsofVEGAPULSseries60.Thereisadifferentversion available for each type of signal output. Youcanfindfurtherinformationintheoperatinginstructions"ElectronicsmoduleVEGAPULSseries60" (Document-ID 36801). Supplementary electronics for double chamber housing The supplementary electronics is a replacement part for sensors with double chamber housing and 4 … 20 mA/HART - two-wire. Youcanfindfurtherinformationintheoperatinginstructions"Supplementaryelectronicsfor4…20mA/HART-two-wire" (Document-ID 42764). Antenna impedance cone The antenna impedance cone is a replacement part used for optimum transmission of microwaves and for sealing against the process. Youfindfurtherinformationintheoperatinginstructions"Antenna impedanceconeVEGAPULS62and68" (Document-ID 31381). 36535-EN-140209 12 VEGAPULS 68 • 4 … 20 mA/HART two-wire 4 Mounting 4 Screwing in Mounting 4.1 General instructions Oninstrumentswithprocessfittingthread,thehexagonmustbetightenedwithasuitablescrewdriver.Wrenchsizeseechapter"Dimensions". Warning: The housing must not be used to screw the instrument in! Applying tightening force can damage internal parts of the housing. Protection against moisture Protect your instrument against moisture penetration through the following measures: • • • • Use the recommended cable (see chapter "Connecting to power supply") Tighten the cable gland Turn the housing in such a way that the cable gland points downward Loop the connection cable downward in front of the cable gland This applies particularly to: • • • Outdoor mounting Installations in areas where high humidity is expected (e.g. through cleaning processes) Installations on cooled or heated vessels Suitability for the process Make sure that all parts of the instrument exposed to the process are conditions suitable for the existing process conditions. These are mainly: • • • Active measuring component Processfitting Process seal • • • • Process pressure Process temperature Chemical properties of the medium Abrasionandmechanicalinfluences Process conditions are particularly: Youcanfindthespecificationsoftheprocessconditionsinchapter "Technicaldata" as well as on the type label. 36535-EN-140209 4.2 Mounting preparations - Horn antenna The instrument is also available in versions with an antenna whose diameterislargerthantheprocessfitting(thread,flange).Insuch casestheantennamustbedisconnectedfromtheprocessfitting before mounting. Proceed as follows: 1. Loosen the hexagon socket screws (3) on the antenna socket withanAllenwrench(size3) 2. Remove the antenna (4) VEGAPULS 68 • 4 … 20 mA/HART two-wire 13 4 Mounting Note: The plastic cone may not be pulled out of the antenna socket. 3. Insert the antenna from below into the vessel socket and secure it againstfallingoff 4. Retighten the antenna with hexagon screws to the antenna socket; torque max. 2.5 Nm (1.8 lbf ft) Note: The radar sensor with rinsing air connection or antenna extension is provided with a notch on the antenna socket. This notch must be alignedwiththemarkingontheprocessfitting(themarkingspecifies the position of the polarisation of the radar signal). 1 2 3 4 Fig. 2: Dismounting of the horn antenna 1 2 3 4 Marking for the polarisation Marking at the antenna socket Hexagon screws on the antenna socket Antenna 4.3 Mounting preparations - Parabolic antenna The instrument is also available in versions where the antenna has adiameterlargerthantheprocessfitting(thread,flange).Withsuch versionstheantennamustbedisconnectedfromtheprocessfitting before mounting. Proceed as follows: 1. ClampVEGAPULS68withtheflange,e.g.inabenchvice 2. Holdtheconnectionpiece(1)withawrenchontheflatsurfaces (widthacrossflats22mm) 3. Loosen counter nut (3) completely with a wrench (width across flats36mm)inthedirectionoftheantenna 5. Remove the parabolic antenna (4) axially 6. Mountsensorflangeontheadapterflangeandfastenittightly 7. Check if the O-ring seal is present on the connection piece and make sure it is not damaged. 14 VEGAPULS 68 • 4 … 20 mA/HART two-wire 36535-EN-140209 4. Loosen compression nut (2) completely with a wrench (width acrossflats41mm)inthedirectionoftheantenna 4 Mounting Note: A damaged O-ring seal must be replaced: FKM (SHS FPM 70C3 GLT),FFKM(Kalrez6375) 8. Remount the parabolic antenna (4) 9. Fastencompressionnut(2)withawrench(widthacrossflats41), torque max. 50 Nm 10. Fastencounternut(3)withawrench(widthacrossflats36), torque max. 40 Nm Note: On the version with rinsing air connection, make sure that the holes intheantennaandintheprocessfittingcoincide.Thisensuresasufficientairflow(theairisledthroughtheholestothefeedsystem.A rinsing of the whole parabolic antenna is not intended). 1 2 3 4 Fig. 3: Dismounting, parabolic antenna 1 2 3 4 Connection piece Compression nut Locknut Parabolic antenna 4.4 Mounting instructions Horn and parabolic antenna The illustrations with the following mounting instructions show a radar sensor with horn antenna. The mounting instructions apply analogously also to the version with parabolic antenna. Polarisation The emitted radar impulses of the radar sensor are electromagnetic waves. The polarisation is the direction of the electrical wave component.Byturningtheinstrumentintheconnectionflangeormounting boss,thepolarisationcanbeusedtoreducetheeffectsoffalse echoes. 36535-EN-140209 Thepositionofthepolarisationismarkedontheprocessfittingofthe instrument. VEGAPULS 68 • 4 … 20 mA/HART two-wire 15 4 Mounting 1 2 Fig. 4: Position of the polarisation 1 Marking with screwed version 2 Markingwithflangeversion Installation position Mount the sensor at least 200 mm (7.874 in) away from the vessel wall. 200 mm (7.87") Fig. 5: Mounting of the radar sensor on the vessel top If you cannot maintain this distance, you should carry out a false signal storage during setup. This applies particularly if buildup on the vessel wall is expected. In such a case, it is recommended to repeat the false signal storage at a later date with existing buildup. Inflowingmedium Mountingshouldnotbetooclosetotheinflowingmaterialasthe microwave signal will be interferred. The optimum mounting position is ontheoppositeofthefilling.Toavoidstrongpollution,thedistanceto thefilterordustextractionmustbeasbigaspossible. 36535-EN-140209 16 VEGAPULS 68 • 4 … 20 mA/HART two-wire 4 Mounting Fig.6:Mountingoftheradarsensorwithinflowingmedium 36535-EN-140209 Withbulksolidssiloswithlateralpneumaticfilling,mountingshould notbeinthefillingstreamasthemicrowavesignalwillbeinterferred. Theoptimummountingpositionisnexttothefilling.Toavoidstrong pollution,thedistancetothefilterordustextractionmustbeasbigas possible. VEGAPULS 68 • 4 … 20 mA/HART two-wire 17 4 Mounting Fig.7:Mountingoftheradarsensorwithinflowingmedium Socket The socket piece should be dimensioned in such a way that the antenna end protrudes slightly out of the socket. 36535-EN-140209 18 VEGAPULS 68 • 4 … 20 mA/HART two-wire ca. 10 mm 4 Mounting > 10 mm (0.39") Fig. 8: Recommended socket mounting with horn antenna Fig. 9: Recommended socket mounting with parabolic antenna When using a swivelling holder, keep in mind that the distance between antenna and socket gets smaller as the inclination of the sensorincreases.Additionalfalsereflectionsmaybegeneratedwhich caninfluencethemeasuringresultatcloserange. 36535-EN-140209 Fig. 10: Distance between antenna and socket with horn antenna VEGAPULS 68 • 4 … 20 mA/HART two-wire 19 4 Mounting Fig. 11: Distance between antenna and socket with parabolic antenna h max. Ifthemediumhasgoodreflectiveproperties,VEGAPULS68with horn antenna can also be mounted on a longer socket piece. Recommendedvaluesforsocketheightsarespecifiedinthefollowing illustration. You must carry out a false echo storage afterwards. d Fig. 12: Deviating socket dimensions Socket diameter d Socket length h Recommended antenna diameter 40 mm ≤100mm 40 mm 50 mm ≤150mm 48 mm 80 mm ≤250mm 75 mm 100 mm ≤500mm 95 mm 150 mm ≤800mm 95 mm Socket diameter d Socket length h Recommended antenna diameter 1½" ≤3.9in 1½" 2" ≤5.9in 2" 3" ≤9.8in 3" 4" ≤19.7in 4" 6" ≤31.5in 4" 20 VEGAPULS 68 • 4 … 20 mA/HART two-wire 36535-EN-140209 Tip: The instrument is also optionally available with an antenna extension. The antenna length can be selected (either ex works or later) to allow the antenna to protrude slightly out of the end of the mounting socket. Duetotheantennaextensionhowever,disturbingreflectionsare generated in the close-up range. This can lead to an increase in the 4 Mounting requiredminimumdistance,especiallywithpoorlyreflectingmedia such as plastic powder. In practice, a cleanly constructed mounting socket, if necessary with rounded edges, introduces fewer disturbing influencesthananantennaextension. Orientation To measure as much of the vessel volume as possible, the sensor should be aligned so that the measuring beam reaches the lowest level in the vessel. In a cylindrical silo with conical outlet mounting is carried out on a socket. It should be positioned on one third up to the half of the vessel radius. r 1/3 r...1/2 r Fig. 13: Orientation 36535-EN-140209 If mounting in the centre of the silo is not possible, the sensor can be directed to the vessel center by using the optional swivelling holder. The following description shows a simple way to determine the required angle of inclination. VEGAPULS 68 • 4 … 20 mA/HART two-wire 21 4 Mounting d α a Fig.14:ProposalforinstallationafterorientationVEGAPULS68 The angle of inclination depends on the vessel dimensions. It can be easily checked with a suitable level or water leve on the sensor. Thefollowingchartspecifiesthedistance"a"betweeninstallation position and vessel centre dependent on the measuring distance for inclination angles of 2° … 10°. Distance d 2° (m) 6° 8° 10° 2 0.1 0.1 0.2 0.3 0.4 4 0.1 0.3 0.4 0.6 0.7 6 0.2 0.4 0.6 0.8 1.1 8 0.3 0.6 0.8 1.1 1.4 10 0.3 0.7 1.1 1.4 1.8 15 0.5 1.0 1.6 2.1 2.6 20 0.7 1.4 2.1 2.8 3.5 25 0.9 1.7 2.6 3.5 4.4 30 1.0 2.1 3.2 4.2 5.3 35 1.2 2.4 3.7 4.9 6.2 40 1.4 2.8 4.2 5.6 7.1 45 1.6 3.1 4.7 6.3 7.9 50 1.7 3.5 5.3 7 8.8 VEGAPULS 68 • 4 … 20 mA/HART two-wire 36535-EN-140209 22 4° 4 Mounting Distance d 2° (m) 4° 6° 8° 10° 55 1.9 3.8 5.8 7.7 9.7 60 2.1 4.2 6.3 8.4 10.6 65 2.3 4.5 6.8 9.1 11.5 70 2.4 4.9 7.4 9.8 12.3 75 2.6 5.2 7.9 1.0 13 Example: In a vessel 20 m high, the installation position of the sensor is 1.4 m from the vessel centre. The necessary angle of inclination of 4° can be read out from this chart. Proceed as follows to adjust the angle of inclination with the swivelling holder: 1. Loosen terminal screw of the swivelling holder with a fork spanner SW 13 2. Direct the sensor, check angle of inclination Information: The max. angle of inclination of the swivelling holder is approx. 15° 3. Tighten the terminal screw, torque max. 20 Nm. Information: The hexagon screws must not be loosened. Vessel installations The mounting location of the radar sensor should be a place where no otherequipmentorfixturescrossthepathofthemicrowavesignals. Vessel installations, such as e.g. ladders, limit switches, heating spirals, struts, etc., can cause false echoes and impair the useful echo. Make sure when planning your measuring site that the radar sensor has a "clear view" to the measured product. In case of existing vessel installations, a false echo storage should be carried out during setup. 36535-EN-140209 If large vessel installations such as struts or supports cause false echoes, these can be attenuated through supplementary measures. Small,inclinedsheetmetalbafflesabovetheinstallationsscatterthe radarsignalsandpreventdirectinterferingreflections. Fig.15:Coversmoothprofileswithdeflectors Agitators If there are agitators in the vessel, a false signal suppression should be carried out with the agitators in motion. This ensures that the VEGAPULS 68 • 4 … 20 mA/HART two-wire 23 4 Mounting interferingreflectionsfromtheagitatorsaresavedwiththebladesin differentpositions. Fig. 16: Agitators Material heaps Large material heaps are detected with several sensors, which can be mounted on e.g. traverse cranes. For this type of application, it is best to orient the sensor toward the solid surface. A mutual infuence of the sensors is not possible. Fig. 17: Radar sensors on traverse crane Information: Keep in mind that for these applications, the sensors are designed for relatively slow level changes. When using VEGAPULS 68 on a movable bracket, the max. measuring rate must be observed (see chapter "Technicaldata"). 24 Instruments for a temperature range up to 250 °C or up to 450 °C haveadistancepiecebetweenprocessfittingandelectronicshousing. Ths distance piece is used for thermal decoupling of the electronics against high process temperatures. VEGAPULS 68 • 4 … 20 mA/HART two-wire 36535-EN-140209 Mounting in the vessel insulation 4 Mounting Information: The distance piece must only be incorporated up to max. 50 mm in the vessel isolation. Only then, a reliable temperature decoupling is guaranteed. max. 50 mm (1.97") 1 2 3 Fig. 18: Mounting the instrument on insulated vessels. 1 Electronicshousing 2 Distance piece 3 Vessel insulation Installation in subsurface For level measurements in concrete silos, the sensors are often enclosures mounted in protective boxes. These boxes can be for example metallic, closed subsurface enclosures. 1 2 Fig. 19: Mounting of the instrument in an subsurface enclosure 36535-EN-140209 1 2 Subsurface enclosure Concrete bottom For this application, the minimal amounts of stray radiation from the sensorcanbereflectedandstrengthenedbythewallsofthesubsurface enclosures. In the case of sensors with plastic housings, this can lead to coupling disturbances. This can be avoided by using a sensor with aluminium or stainless steel housing. VEGAPULS 68 • 4 … 20 mA/HART two-wire 25 4 Mounting Mounting in multiple chamber silo Thesilowallsofmultiplechambersilosareoftenmadeofprofile walls,suchase.g.profilesheeting,toensuretherequiredstability.If the radar sensor is mounted very close to a heavily structured vessel wall,considerablefalsereflectionscanbegenerated.Hencethesensor should be mounted at a large distance from the separating wall. The optimal mounting position is on the outer wall of the silo with the sensor directed towards the emptying aperture in the silo center. Fig.20:MountingofVEGAPULS68inmultiplechambersilos 26 VEGAPULS 68 • 4 … 20 mA/HART two-wire 36535-EN-140209 Fig.21:OrientationofVEGAPULS68foremptyinginthesilocenter 4 Mounting Dust layers To avoid strong buildup and dust in the antenna system, the sensor should not be mounted directly at the dust extraction of the vessel. In case of extreme dust deposits in the antenna system, VEGAPULS 68 is available with a rinsing air connection. The air is distributed via channels in the antenna system and keeps it largely free of dust. Fig. 22: Purging air connection with horn antenna Fig. 23: Purging air connection with parabolic antenna 36535-EN-140209 The practice has shown that a pressure of approx. 0.2 … 1 bar providesasufficientairflow(seediagraminchapter"Technicaldata", "Purging air connection". VEGAPULS 68 • 4 … 20 mA/HART two-wire 27 5 Connecting to power supply 5 Safety instructions Voltage supply Connecting to power supply 5.1 Preparing the connection Always keep in mind the following safety instructions: • • Connect only in the complete absence of line voltage If overvoltage surges are expected, overvoltage arresters should be installed Power supply and current signal are carried on the same two-wire cable.Theoperatingvoltagecandifferdependingontheinstrument version. Thedataforpowersupplyarespecifiedinchapter"Technicaldata". Provide a reliable separation between the supply circuit and the mains circuits according to DIN EN 61140 VDE 0140-1. Keepinmindthefollowingadditionalfactorsthatinfluencetheoperating voltage: • • Connection cable Lower output voltage of the power supply unit under nominal load (e.g. with a sensor current of 20.5 mA or 22 mA in case of fault) Influenceofadditionalinstrumentsinthecircuit(seeloadvaluesin chapter "Technicaldata") The instrument is connected with standard two-wire cable without screen. If electromagnetic interference is expected which is above the test values of EN 61326-1 for industrial areas, screened cable should be used. For instruments with housing and cable gland, use cable with round cross-section. A cable outer diameter of 5 … 9 mm (0.2 … 0.35 in) ensuresthesealeffectofthecablegland.Ifyouareusingcablewith adifferentdiameter,exchangethesealoruseasuitablecablegland. We generally recommend the use of screened cable for HART multidrop mode. Cable gland ½ NPT With plastic housing, the NPT cable gland or the Conduit steel tube must be screwed without grease into the threaded insert. Max. torque for all housings see chapter "Technicaldata". Cable screening and grounding If screened cable is required, we recommend connecting the cable screen on both ends to ground potential. In the sensor, the screen must be connected directly to the internal ground terminal. The ground terminal on the outside of the housing must be connected to the ground potential (low impedance). In electroplating and CCP systems (cathodic corrosion protection) it mustbetakenintoaccountthatsignificantpotentialdifferencesexist. This can lead to unacceptably high shield currents if the cable shield is grounded at both ends. 28 VEGAPULS 68 • 4 … 20 mA/HART two-wire 36535-EN-140209 With Ex systems, the grounding is carried out according to the installation regulations. 5 Connecting to power supply Information: Themetallicpartsoftheinstrument(processfitting,transmitter,concentric tube, etc.) are conductively connected with the inner and outer ground terminal on the housing. This connection exists either directly via connecting metallic parts or, in case of instruments with external electronics, via the screen of the special connection cable. Youcanfindspecificationsonthepotentialconnectionsinsidethe instrument in chapter "Technicaldata". Connection technology 5.2 Connecting The voltage supply and signal output are connected via the springloaded terminals in the housing. Connection to the display and adjustment module or to the interface adapter is carried out via contact pins in the housing. Information: The terminal block is pluggable and can be removed from the electronics. To do this, lift the terminal block with a small screwdriver and pull it out. When reinserting the terminal block, you should hear it snap in. Connection procedure Proceed as follows: 1. Unscrew the housing cover 2. If a display and adjustment module is installed, remove it by turning it slightly to the left. 3. Loosen compression nut of the cable entry gland 4. Remove approx. 10 cm (4 in) of the cable mantle, strip approx. 1 cm (0.4 in) of insulation from the ends of the individual wires 36535-EN-140209 5. Insert the cable into the sensor through the cable entry Fig. 24: Connection steps 5 and 6 - Single chamber housing VEGAPULS 68 • 4 … 20 mA/HART two-wire 29 5 Connecting to power supply Fig. 25: Connection steps 5 and 6 - Double chamber housing 6. Insert the wire ends into the terminals according to the wiring plan Information: Solidcoresaswellasflexiblecoreswithwireendsleevesareinserteddirectlyintotheterminalopenings.Incaseofflexiblecoreswithout end sleeves, press the terminal from above with a small screwdriver, the terminal opening is then free. When the screwdriver is released, the terminal closes again. Youcanfindfurtherinformationonthemax.wirecross-sectionunder "Technicaldata/Electromechanicaldata" 7. Check the hold of the wires in the terminals by lightly pulling on them 8. Connect the screen to the internal ground terminal, connect the outer ground terminal to potential equalisation 9. Tighten the compression nut of the cable entry gland. The seal ring must completely encircle the cable 10. Reinsert the display and adjustment module, if one was installed 11. Screw the housing cover back on Theelectricalconnectionisfinished. 5.3 Wiring plan, single chamber housing The following illustration applies to the non-Ex as well as to the Ex-ia version. 36535-EN-140209 30 VEGAPULS 68 • 4 … 20 mA/HART two-wire 5 Connecting to power supply Electronics and terminal compartment 2 3 4...20mA (+)1 2(-) 5 6 7 8 4 1 Fig.26:Electronicsandterminalcompartment,singlechamberhousing 1 2 3 4 Voltage supply, signal output For display and adjustment module or interface adapter For external display and adjustment unit Groundterminalforconnectionofthecablescreen 5.4 Electronics compartment Wiring plan, double chamber housing The following illustrations apply to the non-Ex as well as to the Ex-ia version. 2 4...20mA (+)1 2(-) 1 5 6 7 8 3 Fig.27:Electronicscompartment,doublechamberhousing 1 2 Internal connection to the connection compartment For display and adjustment module or interface adapter 36535-EN-140209 Information: The connection of an external display and adjustment unit is not possible with this double chamber housing. VEGAPULS 68 • 4 … 20 mA/HART two-wire 31 5 Connecting to power supply Terminal compartment 2 4...20mA (+)1 3 Display 2(-) 5 6 7 1 8 4 Fig.28:Terminalcompartment,doublechamberhousing 1 2 3 4 Connection compartment - Radio module PLICSMOBILE Voltage supply, signal output For display and adjustment module or interface adapter For external display and adjustment unit Groundterminalforconnectionofthecablescreen Information: The use of an external display and adjustment unit and a display and adjustment module in parallel in the connection compartment is not supported. SIM-Card Status Test USB (+)1 2(-) 1 Fig.29:ConnectioncompartmentradiomodulePLICSMOBILE 1 Voltage supply Youcanfinddetailedinformationonconnectioninthesupplementary instructions "PLICSMOBILEGSM/GPRSradiomodule". 36535-EN-140209 32 VEGAPULS 68 • 4 … 20 mA/HART two-wire 5 Connecting to power supply Electronics compartment 5.5 Wiring plan, double chamber housing Ex d ia 2 4...20mA (+)1 2(-) 5 6 1 7 8 3 Fig.30:Electronicscompartment,doublechamberhousingExdia 1 2 3 Terminal compartment Internal connection to the connection compartment For display and adjustment module or interface adapter Internal connection to the plug connector for external display and adjustment unit (optional) Note: If an instrument with Ex-d-ia approval is used, HART multidrop operation is not possible. 4...20mA (+)1 2 2(-) 1 Fig.31:Connectioncompartment,doublechamberhousingExdia 1 Voltage supply, signal output 2 Groundterminalforconnectionofthecablescreen 36535-EN-140209 Plug M12 x 1 for external display and adjustment unit 4 3 1 2 Fig.32:Topviewoftheplugconnector 1 2 3 4 Pin 1 Pin 2 Pin 3 Pin 4 VEGAPULS 68 • 4 … 20 mA/HART two-wire 33 5 Connecting to power supply Electronics compartment Contact pin Colour connection cable in the sensor Terminal, electronics module Pin 1 Brown 5 Pin 2 White 6 Pin 3 Blue 7 Pin 4 Black 8 5.6 Double chamber housing with DIS-ADAPT 1 2 3 Fig. 33: View to the electronics compartment 1 DIS-ADAPT 2 Internal plug connection 3 Plug connector M12 x 1 Assignment of the plug connector 4 3 1 2 Fig.34:Topviewoftheplugconnector 1 2 3 4 Contact pin Colour connection cable in the sensor Terminal, electronics module Pin 1 Brown 5 Pin 2 White 6 Pin 3 Blue 7 Pin 4 Black 8 VEGAPULS 68 • 4 … 20 mA/HART two-wire 36535-EN-140209 34 Pin 1 Pin 2 Pin 3 Pin 4 5 Connecting to power supply Wire assignment, connection cable 5.7 Wiring plan - version IP 66/IP 68, 1 bar 1 2 Fig. 35: Wire assignment in permanently connected connection cable 1 2 brown (+) and blue (-) to power supply or to the processing system Shielding 5.8 Switch-on phase After connecting the instrument to power supply or after a voltage recurrence, the instrument carries out a self-check for approx. 30 s: • • • • Internal check of the electronics Indication of the instrument type, hardware and software version, measurement loop name on the display or PC Indication of the status message "F 105 Determine measured value" on the display or PC The output signal jumps to the set fault current 36535-EN-140209 As soon as a plausible measured value is found, the corresponding current is outputted to the signal cable. The value corresponds to the actual level as well as the settings already carried out, e.g. factory setting. VEGAPULS 68 • 4 … 20 mA/HART two-wire 35 6 Set up with the display and adjustment module 6 6.1 Set up with the display and adjustment module Insert display and adjustment module The display and adjustment module can be inserted into the sensor andremovedagainatanytime.Youcanchooseanyoneoffourdifferent positions - each displaced by 90°. It is not necessary to interrupt the power supply. Proceed as follows: 1. Unscrew the housing cover 2. Place the display and adjustment module in the requested position onto the electronics and turn to the right until it snaps in 3. Screw housing cover with inspection window tightly back on Removal is carried out in reverse order. The display and adjustment module is powered by the sensor, an additional connection is not necessary. Fig. 36: Installing the display and adjustment module in the electronics compartment of the single chamber housing 36535-EN-140209 36 VEGAPULS 68 • 4 … 20 mA/HART two-wire 6 Set up with the display and adjustment module 1 2 Fig. 37: Insertion of the display and adjustment module into the double chamber housing 1 In the electronics compartment 2 Intheconnectioncompartment(withEx-d-iaversionnotpossible) Note: Ifyouintendtoretrofittheinstrumentwithadisplayandadjustment module for continuous measured value indication, a higher cover with an inspection glass is required. 6.2 Adjustment system 1 36535-EN-140209 2 Fig. 38: Display and adjustment elements Key functions 1 2 LC display Adjustment keys • [OK] key: – Move to the menu overview VEGAPULS 68 • 4 … 20 mA/HART two-wire 37 6 Set up with the display and adjustment module • • • Adjustment system – Confirmselectedmenu – Edit parameter – Save value [-] key: – Presentation, change measured value – Select list entry – Select editing position [+] key: – Change value of the parameter [ESC] key: – Interrupt input – Jump to next higher menu The device is adjusted via the four keys of the display and adjustment module. The LC display indicates the individual menu items. The functions of the individual keys are shown in the above illustration. Approx. 60 minutes after the last pressing of a key, an automatic reset to measuredvalueindicationistriggered.Anyvaluesnotconfirmedwith [OK] will not be saved. 6.3 Parameter adjustment The instrument is adapted to the application conditions via the parameter adjustment. The parameter adjustment is carried out with an adjustment menu. Main menu Themainmenuisdividedintofivesectionswiththefollowingfunctions: Setup: Settings, e.g., for measurement loop name, medium, application, vessel, adjustment, signal output Display: Settings, e.g., for language, measured value display, lighting Diagnosis: Information, e.g. on instrument status, pointer, measurement reliability, simulation, echo curve Further settings: Instrument unit, false signal suppression, linearisation curve, reset, date/time, reset, copy function Info: Instrument name, hardware and software version, date of manufacture, instrument features 38 VEGAPULS 68 • 4 … 20 mA/HART two-wire 36535-EN-140209 Information: Inthisoperatinginstructionsmanual,theinstrument-specificparameters in the menu sections "Setup", "Diagnosis" and "Additional settings" are described. The general parameters in these menu section are described in the operating instructions manual "Indicating and adjustment module". 6 Set up with the display and adjustment module Youcanfindintheoperatinginstructionsmanual"Display and adjustment module" also the description of the menu sections "Display" and "Info". In the main menu point "Setup", the individual submenu points should be selected one after the other and provided with the correct parameters to ensure optimum adjustment of the measurement. The procedure is described in the following. Setup Setup - Medium Eachmediumhasdifferentreflectionproperties.Withliquids,further interferingfactorsarefluctuationproductsurfaceandfoamgeneration. With bulk solids, these are dust generation, material cone and additional echoes from the vessel wall. Toadaptthesensortothesedifferentmeasuringconditions,the selection "Liquid" or "Bulk solid" should be made in this menu item. Through this selection, the sensor is adapted perfectly to the product andmeasurementreliability,particularlyinproductswithpoorreflective properties, is considerably increased. Enter the requested parameters via the appropriate keys, save your settings with [OK] and jump to the next menu item with the [ESC] and the [->] key. Setup - Application In addition to the medium, also the application, i.e. the measuring site, caninfluencethemeasurement. With this menu item, the sensor can be adapted to the applications. The adjustment possibilities depend on the selection "Liquid" or "Bulk solid" under "Medium". 36535-EN-140209 The following options are available when "Liquid" is selected: The selection "Standpipe" opens a new window in which the inner diameter of the applied standpipe is entered. VEGAPULS 68 • 4 … 20 mA/HART two-wire 39 6 Set up with the display and adjustment module The following features form the basis of the applications: Storage tank: • Setup: large-volumed, upright cylindrical, spherical • Productspeed:slowfillingandemptying • Process/measurement conditions: – Condensation – Smooth product surface – High requirements to the measurement accuracy • Properties, sensor: – Slight sensitivity against sporadic false echoes – Stable and reliable measured values by averaging – High accuracy – Short reaction time of the sensor not required Storage tanke with product circulation: Setup: large-volumed, upright cylindrical, spherical Productspeed:slowfillingandemptying Installations: small laterally mounted or large top mounted stirrer Process/measurement conditions: – Relatively smooth product surface – High requirements to the measurement accuracy – Condensation – Slight foam generation – Overfillingpossible • Properties, sensor: – Slight sensitivity against sporadic false echoes – Stable and reliable measured values by averaging – High accuracy because not adjusted for max. speed – False signal suppression recommended • • • • Storage tank on ships (Cargo Tank): Productspeed:slowfillingandemptying Vessel: – Installations in the bottom section (bracers, heating spirals) – High sockets 200 … 500 mm, also with large diameters • Process/measurement conditions: – Condensation, buildup by movement – Max. requirement on measurement accuracy from 95 % • Properties, sensor: – Slight sensitivity against sporadic false echoes – Stable and reliable measured values by averaging – High accuracy – False signal suppression required • • 40 VEGAPULS 68 • 4 … 20 mA/HART two-wire 36535-EN-140209 Stirrer vessel (reactor): Setup:allvesselsizespossible Product speed: • • 6 Set up with the display and adjustment module • • • – Fasttoslowfillingpossible – Vesselisveryoftenfilledandemptied Vessel: – Socket available – Large agitator blades of metal – Vortex breakers, heating spirals Process/measurement conditions: – Condensation, buildup by movement – Strong spout generation – Very agitated surface, foam generation Properties, sensor: – Higher measurement speed through lower averaging – Sporadic false echoes are suppressed Dosing vessel: Setup:allvesselsizespossible Product speed: – Fastfillingandemptying – Vesselisveryoftenfilledandemptied • Vessel: narrow installation situation • Process/measurement conditions: – Condensation, buildup on the antenna – Foam generation • Properties, sensor: – Measurementspeedoptimizedbyvirtuallynoaveraging – Sporadic false echoes are suppressed – False signal suppression recommended • • Standpipe: Productspeed:veryfastfillingandemptying Vessel: – Vent hole – Joinslikeflanges,weldjoints – Shifting of the running time in the tube • Process/measurement conditions: – Condensation – Buildup • Properties, sensor: – Measurementspeedoptimizedthroughlittleaveraging – Entering the tube inside diameter takes the running time shift into consideration – Echo detection sensitivity reduced • • Bypass: Product speed: – Fastuptoslowfillingwithshortuptolongbypasstubepossible – Often the level is hold via a control facility • Vessel: – Lateral outlets and inlets – Joinslikeflanges,weldjoints – Shifting of the running time in the tube • Process/measurement conditions: – Condensation 36535-EN-140209 • VEGAPULS 68 • 4 … 20 mA/HART two-wire 41 6 Set up with the display and adjustment module • – Buildup – Separation of oil and water possible – Overfillingintotheantennapossible Properties, sensor: – Measurementspeedoptimizedthroughlittleaveraging – Entering the tube inside diameter takes the running time shift into consideration – Echo detection sensitivity reduced – False signal suppression recommended Plastic tank: Vessel: – Measurementfixmountedorintegrated – Measurement depending on the application through the vessel top – With empty vessel, the measurement can be carried out through the bottom • Process/measurement conditions: – Condensation on the plastic ceiling – In outside facilities water and snow on the vessel top possible • Properties, sensor: – False signals outside the vessel are not taken into consideration – False signal suppression recommended • Transportable plastic tank: Vessel: – Materialandthicknessdifferent – Measurement through the vessel top • Process/measurement conditions: – Measured value jump with vessel change • Properties, sensor: – Quickadaptationtochangingreflectionconditionsthrough vessel change – False signal suppression required • Open water (gauge measurement): Gauge rate of change: slow gauge change Process/measurement conditions: – Distance sensor to water surface to big – Extreme damping of output signal due to wave generation – Ice and condensation on the antenna possible – Spiders and insect nestle in the antennas – Floating material and animals sporadically on the water surface • Properties, sensor: – Stable and reliable measured values by high averaging – Insensitive in the close range • • 42 VEGAPULS 68 • 4 … 20 mA/HART two-wire 36535-EN-140209 Openflume(flowmeasurement): Gauge rate of change: slow gauge change Process/measurement conditions: – Ice and condensation on the antenna possible – Spiders and insect nestle in the antennas – Smooth water surface • • 6 Set up with the display and adjustment module • – Exact measurement result required – Distance to the water surface normally relatively high Properties, sensor: – Stable and reliable measured values by high averaging – Insensitive in the close range Rain water overfall (weir): Gauge rate of change: slow gauge change Process/measurement conditions: – Ice and condensation on the antenna possible – Spiders and insect nestle in the antennas – Turbulent water surface – Sensorfloodingpossible • Properties, sensor: – Stable and reliable measured values by high averaging – Insensitive in the close range • • Demonstration: Adjustment for all applications which are not typically level measurement – Instrument demonstration – Object recognition/monitoring (additional settings required) • Properties, sensor: – Sensor accepts all measured value changes within the measuring range immediately – High sensitivity against interferences, because virtually no averaging • Caution: Ifaseparationofliquidswithdifferentdielectricconstantoccursin the vessel, for example through condensation, the radar sensor can detect under certain circumstances only the medium with the higher dielectric constant. Keep in mind that layer interfaces can cause faulty measurements. If you want to measure the total height of both liquids reliably, please contact our service department or use an instrument specially designed for interface measurement. The following options are available when "Bulk solid" is selected: 36535-EN-140209 The following features form the basis of the applications: Silo (slim and high): • Vessel of metal: weld joints • Process/measurement conditions: – Filling too close to the sensor – System noise with completely empty silo increased • Properties, sensor: – Stable measured values through higher averaging VEGAPULS 68 • 4 … 20 mA/HART two-wire 43 6 Set up with the display and adjustment module – False signal suppression recommended with setup, required for automatic false signal suppression – Automaticfalsesignalsuppressionwithpartlyfilledvessel Bunker (large-volumed): Vessel of concrete or metal: – Structured vessel walls – Installations present • Process/measurement conditions: – Large distance to the medium – Large angles of repose • Properties, sensor: – Mean averaging – High measured value jumps are accepted • Bunkerwithfastfilling: Vessel of concrete or metal, also multiple chamber silo: – Structured vessel walls – Installations present • Process/measurement conditions: – Measured value jumps, e.g. by truck loading – Large distance to the medium – Large angles of repose • Properties, sensor: – Lower averaging – Very high measured value jumps are accepted • Heap: Sensor mounting on movable conveyor belts Detectionoftheheapprofile Heightdetectionduringfilling Process/measurement conditions: – Measuredvaluejumps,e.g.bytheprofileoftheheaportraverses – Large angles of repose – Measurementnearthefillingstream • Properties, sensor: – Mean averaging – High measured value jumps are accepted • • • • Crusher: Vessel: installations, wear and protective facilities available Process/measurement conditions: – Measured value jumps, e.g. by truck loading – Fast reaction time – Large distance to the medium • Properties, sensor: – Little averaging – Max. reaction speed, very high measured value jumps are accepted • • VEGAPULS 68 • 4 … 20 mA/HART two-wire 36535-EN-140209 44 6 Set up with the display and adjustment module Demonstration: • Adjustment for all applications which are not typically level measurement – Instrument demonstration – Object recognition/monitoring (additional settings required) • Properties, sensor: – Sensor accepts all measured value changes within the measuring range immediately – High sensitivity against interferences, because virtually no averaging Through this selection, the sensor is adapted optimally to the application or the location and measurement reliability under the various basic conditions is increased considerably. Enter the requested parameters via the appropriate keys, save your settings with [OK] and jump to the next menu item with the [ESC] and the [->] key. Setup - Vessel height, measuring range With this selection, the operating range of the sensor is adapted to thevesselheightandthereliabilitywithdifferentframeconditionsis increased considerably. Independent from this, the min. adjustment must be carried out. Enter the requested parameters via the appropriate keys, save your settings with [OK] and jump to the next menu item with the [ESC] and the [->] key. Setup - Vessel form Alsothevesselformcaninfluencethemeasurementapartfromthe medium and the application. To adapt the sensor to these measurementconditions,thismenuitemoffersyoudifferentoptionsforvessel bottom and ceiling in case of certain applications. Enter the requested parameters via the appropriate keys, save your settings with [OK] and jump to the next menu item with the [ESC] and the [->] key. 36535-EN-140209 Setup - Adjustment Since the radar sensor is a distance measuring instrument, the distance from the sensor to the product surface is measured. For indication of the real level, an allocation of the measured distance to the percentage height must be carried out. To perform the adjustment, enter the distance with full and empty vessel, see the following example: VEGAPULS 68 • 4 … 20 mA/HART two-wire 45 3 100% 2 35 m (1378") 1m (39.37") 6 Set up with the display and adjustment module 0% 1 Fig.39:Parameteradjustmentexamplemin./max.adjustment 1 2 Min. level = max. meas. distance Max. level = min. meas. distance If these values are not known, an adjustment with the distances of for example 10 % and 90 % is possible. Starting point for these distance specificationsisalwaysthesealsurfaceofthethreadorflange.You canfindspecificationsofthereferenceplaneinchapter"Technical data". By means of these settings, the real level will be calculated. The real product level during this adjustment is not important, because the min./max. adjustment is always carried out without changing the product level. These settings can be made ahead of time without the instrument having to be installed. Setup - Min. adjustment Proceed as follows: 1. Select the menu item "Setup" with [->]andconfirmwith[OK]. Now select with [->] the menu item "Min. adjustment"andconfirm with [OK]. 2. Edit the percentage value with [OK] and set the cursor to the requested position with [->]. 46 VEGAPULS 68 • 4 … 20 mA/HART two-wire 36535-EN-140209 3. Set the requested percentage value with [+] and save with [OK]. The cursor jumps now to the distance value. 6 Set up with the display and adjustment module 4. Enter the suitable distance value in m for the empty vessel (e.g. distance from the sensor to the vessel bottom) corresponding to the percentage value. 5. Save settings with [OK] and move with [ESC] and [->] to the max. adjustment. Setup - Max. adjustment Proceed as follows: 1. Select with [->]themenuitem"Max.adjustment"andconfirm with [OK]. 2. Prepare the percentage value for editing with [OK] and set the cursor to the requested position with [->]. 3. Set the requested percentage value with [+] and save with [OK]. The cursor jumps now to the distance value. 4. Enter the appropriate distance value in m (corresponding to the percentage value) for the full vessel. Keep in mind that the max. level must lie below the min. distance to the antenna edge. 5. Save settings with [OK] 36535-EN-140209 Diagnosis - Peak value The respective min. and max. measured value is saved in the sensor. The values are displayed in the menu item "Peak values". Diagnosis - Measurement When non-contact level sensors are used, the measurement can be reliability influencedbytherespectiveprocessconditions.Inthismenuitem, the measurement reliability of the level echo is displayed as dB value. The measurement reliability equals signal strength minus noise. The higher the value, the more reliable the measurement. With a functioning measurement, the values are > 10 dB. VEGAPULS 68 • 4 … 20 mA/HART two-wire 47 6 Set up with the display and adjustment module Diagnoses - Curve indica- The "Echocurve" shows the signal strength of the echoes over the tion measuring range in dB. The signal strength enables an evaluation of the quality of the measurement. The "False signal suppression" displays the saved false echoes (see menu "Additional settings") of the empty vessel with signal strength in "dB" over the measuring range. A comparison of echo curve and false signal suppression allows a more detailed statement of the reliability. Theselectedcurveispermanentlyupdated.Asubmenuwithzoom functions is opened with the [OK] key: • • • Diagnostics - Echo curve memory "X-Zoom":Zoomfunctionforthemeas.distance "Y-Zoom":1,2,5and10xsignalmagnificationin"dB" "Unzoom":Resetthepresentationtothenominalmeasuringrange withsinglemagnification With the function "Echocurvememory" the echo curve can be saved at the time of setup. This is generally recommended; for using the Asset Management functions it is absolutely necessary. If possible, the curve should be saved with a low level in the vessel. With the adjustment software PACTware and the PC, the high resolutionechocurvecanbedisplayedandusedtorecognizesignal changes over the operating time. In addition, the echo curve of the setup can be also displayed in the echo curve window and compared with the actual echo curve. 48 Thefollowingcircumstancescauseinterferingreflectionsandcan influencethemeasurement: • • • • High sockets Vessel installations such as struts Agitators Buildup or welded joints on vessel walls VEGAPULS 68 • 4 … 20 mA/HART two-wire 36535-EN-140209 Additional adjustments False signal suppression 6 Set up with the display and adjustment module Note: A false signal suppression detects, marks and saves these false signals so that they are no longer taken into account for level measurement. This should be done with the low level so that all potential interfering reflectionscanbedetected. Proceed as follows: 1. Select the menu item "Additional settins" with [->]andconfirm with [OK]. With [->] you have to select the menu item "False signal suppression"andconfirmwith[OK]. 2. Confirmagainwith[OK]. 3. Confirmagainwith[OK]. 4. Confirmagainwith[OK] and enter the actual distance from the sensor to the product surface. 5. All interfering signals in this section are detected by the sensor andstoredafterconfirmingwith[OK]. Note: Check the distance to the product surface, because if an incorrect (too large) value is entered, the existing level will be saved as a false echo.Thefillinglevelwouldthennolongerbedetectableinthisarea. 36535-EN-140209 If a false signal suppression has already been created in the sensor, the following menu window appears when selecting "False signal suppression": The menu item "Delete" is used to completely delete an already created false signal suppression. This is useful if the saved false signal suppression no longer matches the metrological conditions in the vessel. VEGAPULS 68 • 4 … 20 mA/HART two-wire 49 6 Set up with the display and adjustment module The menu item "Extend" is used to extend an already created false signal suppression. This is useful if a false signal suppression was carried out with a too high level and not all false signals could be detected. When selecting "Extend", the distance to the product surface of the created false signal suppression is displayed. This value can now be changed and the false signal suppression can be extended to this range. Additional adjustments Linearization curve Alinearizationisnecessaryforallvesselsinwhichthevesselvolume doesnotincreaselinearlywiththelevel-e.g.ahorizontalcylindrical or spherical tank - and the indication or output of the volume is required.Correspondinglinearizationcurvesarepreprogrammed for these vessels. They represent the correlation between the level percentage and vessel volume. By activating the appropriate curve, the volume percentage of the vessel is displayed correctly. If the volume should not be displayed in percent but e.g. in l or kg, a scaling can be also set in the menu item "Display". Enter the requested parameters via the appropriate keys, save your settings and jump to the next menu item with the [ESC] and [->] key. Caution: Note the following if the instrument with corresponding approval is usedaspartofanoverfillprotectionsystemaccordingtoWHG: Ifalinearizationcurveisselected,themeasuringsignalisnolonger necessarilylineartothefillingheight.Thismustbeconsideredbythe user especially when adjusting the switching point on the limit signal transmitter. Additional adjustments - Reset With a reset, certain parameter adjustments carried out by the user are reset. The following reset functions are available: Delivery status: Restoring the parameter settings at the time of shipmentfromthefactoryincl.theorder-specificsettings.Acreatedfalse signalsuppression,user-programmablelinearizationcurveaswellas the measured value memory will be deleted. Setup: Resetting of the parameter settings to the default values of the respective instrument in the menu item Setup. User-generated false 50 VEGAPULS 68 • 4 … 20 mA/HART two-wire 36535-EN-140209 Basic settings: Resetting the parameter settings incl. special parameters to the default values of the respective instrument. Any stored falsesignalsuppression,userprogrammablelinearizationcurveas well as the measured value memory is deleted. 6 Set up with the display and adjustment module signalsuppression,user-programmedlinearizationcurve,measured value memory as well as event memory remain untouched. The linearizationissettolinear. False signal suppression: Deleting a previously created false signal suppression. The false signal suppression created in the factory remains active. Peak values measured value: Resetting of the measured min. and max. distances to the actual measured value. The following table shows the default values of the instrument. Depending on the instrument version, not all menu items are available or differentlyassigned: Menu Menu item Default value Setup Measurement loop name Sensor Medium Liquid/Water Application Storage tank Vessel form Vessel bottom, dished boiler end Vesell height/ Measuring range Recommended measuring range, see "Technicaldata" in the supplement Min. adjustment Recommended measuring range, see "Technicaldata" in the supplement Max. adjustment 0,000 m(d) Damping 0.0 s Current output mode 4 … 20 mA, < 3.6 mA Current output Min./Max. Min. current 3.8 mA, max. current 20.5 mA 36535-EN-140209 Display VEGAPULS 68 • 4 … 20 mA/HART two-wire Bulk solids/Crushed stones, gravel Silo Vessel top, dished boiler end Block adjustment Released Language Like order Displayed value Distance Display unit m Scalingsize Volume Scaling 0.00 lin %, 0 l Backlight Switchedoff l 100.00 lin %, 100 l 51 6 Set up with the display and adjustment module Menu Menu item Default value Additional adjustments Distance unit m Temperature unit °C Probe length Length of the standpipe Ex factory Linearisation curve Linear HART mode Standard 6.4 Address 0 Saving the parameter adjustment data We recommended noting the adjusted data, e.g. in this operating instructions manual, and archiving them afterwards. They are thus available for multiple use or service purposes. If the instrument is equipped with a display and adjustment module, the data in the sensor can be saved in the display and adjustment module. The procedure is described in the operating instructions manual "Display and adjustment module" in the menu item "Copy sensor data". The data remain there permanently even if the sensor power supply fails. The following data or settings for adjustment of the display and adjustment module are saved: • • • All data of the menu "Setup" and "Display" In the menu "Additional adjustments" the items "Sensor-specific units, temperature unit and linearization" Thevaluesoftheuserprogrammablelinearizationcurve The function can also be used to transfer settings from one instrument to another instrument of the same type. If it is necessary to exchange a sensor, the display and adjustment module is inserted into the replacement instrument and the data are likewise written into the sensor via the menu item "Copy sensor data". 36535-EN-140209 52 VEGAPULS 68 • 4 … 20 mA/HART two-wire 7 Setup with PACTware 7 Setup with PACTware 7.1 Connect the PC Via the interface adapter directly on the sensor 2 1 3 Fig. 40: Connection of the PC directly to the sensor via the interface adapter 1 USBcabletothePC 2 InterfaceadapterVEGACONNECT 3 Sensor Via the interface adapter and HART 2 4 USB N OPE 3 TWIST LO CK 1 5 Fig.41:ConnectingthePCviaHARTtothesignalcable 36535-EN-140209 1 2 3 4 5 Sensor HARTresistance250Ω(optionaldependingonprocessing) Connection cable with 2 mm pins and terminals Processingsystem/PLC/Voltagesupply Interfaceadapter,forexampleVEGACONNECT4 Note: With power supply units with integrated HART resistance (internal resistanceapprox.250Ω),anadditionalexternalresistanceisnot necessary. This applies, e.g. to the VEGA instruments VEGATRENN 149A, VEGAMET 381, VEGAMET 391. Common Ex separators are alsousuallyequippedwithasufficientcurrentlimitationresistance.In VEGAPULS 68 • 4 … 20 mA/HART two-wire 53 7 Setup with PACTware such cases, the interface converter can be connected parallel to the 4 … 20 mA cable (dashed line in the previous illustration). Prerequisites 7.2 Parameter adjustment For parameter adjustment of the sensor via a Windows PC, the configurationsoftwarePACTwareandasuitableinstrumentdriver(DTM) according to FDT standard are required. The up-to-date PACTware version as well as all available DTMs are compiled in a DTM Collection. The DTMs can also be integrated into other frame applications according to FDT standard. Note: To ensure that all instrument functions are supported, you should always use the latest DTM Collection. Furthermore, not all described functionsareincludedinolderfirmwareversions.Youcandownload the latest instrument software from our homepage. A description of the update procedure is also available in the Internet. Further setup steps are described in the operating instructions manual "DTMCollection/PACTware" attached to each DTM Collection and which can also be downloaded from the Internet. Detailed descriptions are available in the online help of PACTware and the DTMs. Fig.42:ExampleofaDTMview Standard/Full version In the full version there is also an extended print function for complete project documentation as well as a save function for measured value 54 VEGAPULS 68 • 4 … 20 mA/HART two-wire 36535-EN-140209 All device DTMs are available as a free-of-charge standard version and as a full version that must be purchased. In the standard version, all functions for complete setup are already included. An assistant for simpleprojectconfigurationsimplifiestheadjustmentconsiderably. Saving/printing the project as well as import/export functions are also part of the standard version. 7 Setup with PACTware and echo curves. In addition, there is a tank calculation program as well as a multiviewer for display and analysis of the saved measured value and echo curves. The standard version is available as a download under www.vega.com/downloads and "Software". The full version is available on CD from the agency serving you. 7.3 Saving the parameter adjustment data 36535-EN-140209 We recommend documenting or saving the parameter adjustment data via PACTware. That way the data are available for multiple use or service purposes. VEGAPULS 68 • 4 … 20 mA/HART two-wire 55 8 Set up with other systems 8 8.1 Set up with other systems DD adjustment programs Device descriptions as Enhanced Device Description (EDD) are available for DD adjustment programs such as, for example, AMS™ and PDM. Thefilescanbedownloadedatwww.vega.com/downloads under "Software". 8.2 Field Communicator 375, 475 Device descriptions for the instrument are available as EDD for parameter adjustment with the Field Communicator 375 or 475. For the integration of the EDD in the Field Communicator 375 or 475, the software "Easy Upgrade Utility" is required which is available from the manufacturer. This software is updated via the Internet and new EDDs are automatically taken over into the device catalogue of this software after they are released by the manufacturer. They can then be transferred to a Field Communicator. 36535-EN-140209 56 VEGAPULS 68 • 4 … 20 mA/HART two-wire 9 Diagnosis, asset management and service 9 Diagnosis, asset management and service 9.1 Maintenance If the device is used correctly, no maintenance is required in normal operation. Insomeapplications,buildupontheantennasystemcaninfluence the measuring result. Depending on the sensor and application, make arrangements to avoid strong pollution of the antenna system. If necessary, clean the antenna system in certain intervals. 9.2 Measured value and event memory The instrument has several memories which are available for diagnosis purposes. The data remain even with voltage interruption. Measured value memory Up to 60,000 measured values can be stored in the sensor in a ring memory. Each entry contains date/time as well as the respective measured value. Storable values are for example: • • • • • • • • Distance Filling height Percentage value Lin. percent Scaled Current value Meas. reliability Electronics temperature When the instrument is shipped, the measured value memory is active and stores distance, measurement certainty and electronics temperature every 3 minutes. The requested values and recording conditions are set via a PC with PACTware/DTM or the control system with EDD. Data are thus read out and also reset. Event memory Up to 500 events are automatically stored with a time stamp in the sensor (non-deletable). Each entry contains date/time, event type, event description and value. Event types are for example: • • • • Modificationofaparameter Switch-onandswitch-offtimes Status messages (according to NE 107) Error messages (according to NE 107) 36535-EN-140209 The data are read out via a PC with PACTware/DTM or the control system with EDD. Echo curve memory The echo curves are stored with date and time and the corresponding echo data. The memory is divided into two sections: Echo curve of the setup: This is used as reference echo curve for the measurement conditions during setup. Changes in the measurement conditions during operation or buildup on the sensor can thus berecognized.Theechocurveofthesetupisstoredvia: VEGAPULS 68 • 4 … 20 mA/HART two-wire 57 9 Diagnosis, asset management and service • • • PC with PACTware/DTM Control system with EDD Display and adjustment module • • PC with PACTware/DTM Control system with EDD Further echo curves: Up to 10 echo curves can be stored in a ring bufferinthismemorysection.Furtherechocurvesarestoredvia: 9.3 Asset Management function The instrument features self-monitoring and diagnostics according to NE 107 and VDI/VDE 2650. In addition to the status messages in the following tables there are more detailed error messages available under the menu item "Diagnostics" via the display and adjustment module, PACTware/DTM and EDD. Status messages The status messages are divided into the following categories: • • • • Failure Function check Outofspecification Maintenance requirement and explained by pictographs: 1 2 3 4 Fig. 43: Pictographs of the status messages 1 2 3 4 Failure - red Outofspecification-yellow Function check - orange Maintenance - blue Failure: Due to a malfunction in the instrument, a failure message is outputted. This status message is always active. It cannot be deactivated by the user. Function check: The instrument is in operation, the measured value is temporarily invalid (for example during simulation). This status message is inactive by default. It can be activated by the user via PACTware/DTM or EDD. This status message is inactive by default. It can be activated by the user via PACTware/DTM or EDD. 58 VEGAPULS 68 • 4 … 20 mA/HART two-wire 36535-EN-140209 Outofspecification: The measured value is unstable because the instrumentspecificationisexceeded(e.g.electronicstemperature). 9 Diagnosis, asset management and service Maintenance:Duetoexternalinfluences,theinstrumentfunction islimited.Themeasurementisaffected,butthemeasuredvalueis still valid. Plan in maintenance for the instrument because a failure is expected in the near future (e.g. due to buildup). This status message is inactive by default. It can be activated by the user via PACTware/DTM or EDD. Failure The following table shows the error codes in the status message "Failure"andgivesinformationonthereasonandrectification.Keep in mind that some information is only valid with four-wire instruments. Code Cause Rectification F013 – Sensor does not detect an echo during operation – Antenna system contaminated or defective – Check or correct installation and/or parameter adjustment – Clean or exchange process component or antenna F017 – Adjustment not within specification – Change adjustment according to the limit values (difference between min. and max.≥10mm) F025 – Index markers are not con- – Checklinearizationtable tinuously rising, for example – Delete table/Create new illogical value pairs F036 – Failed or interrupted software update – – – – F040 – Hardware defect – Exchanging the electronics – Send instrument for repair F080 – General software error – Disconnect operating voltagebriefly F105 – The instrument is still in the start phase, the measured value could not yet be determined – Wait for the end of the switch-on phase – Duration depending on the version and parameter adjustment up to approximately 3 min. F113 – EMC interference – Transmission error with the external communication with 4-wire power supply unit – RemoveEMCinfluences – Exchange 4-wire power supply unit or electronics F125 – Temperature of the elec– Check ambient temperature tronicsinthenon-specified – Isolate electronics section – Use instrument with higher temperature range Text message no measured value available Adjustment span too small Error in the linearization table No operable software Error in the electronics Determine measured value 36535-EN-140209 Communication error Impermissible electronics temperature VEGAPULS 68 • 4 … 20 mA/HART two-wire Repeat software update Check electronics version Exchanging the electronics Send instrument for repair 59 9 Diagnosis, asset management and service Code Cause Rectification F260 – Error in the calibration carried out in the factory – Error in the EEPROM – Exchanging the electronics – Send instrument for repair F261 – Error during setup – False signal suppression faulty – Error when carrying out a reset – Repeat setup – Repeat reset F264 – Adjustment not within the – Check or correct installation vessel height/measuring and/or parameter adjustrange ment – Max. measuring range of – Use an instrument with bigtheinstrumentnotsufficient ger measuring range Text message Error in the calibration Error in the configuration Installation/ Setup error F265 – Sensor no longer carries out a measurement Measurement – Operating voltage too low function disturbed Function check The following table shows the error codes and text messages in the status message "Function check" and provides information on causes as well as corrective measures. Code Cause Rectification C700 – A simulation is active – Finish simulation – Wait for the automatic end after 60 mins. Text message Simulation active Outofspecification The following table shows the error codes and text messages in the status message "Outofspecification" and provides information on causes as well as corrective measures. Cause S600 Impermissible electronics temperature – Temperature of the elec– Check ambient temperature tronicsinthenon-specified – Isolate electronics section – Use instrument with higher temperature range S601 – Dangerofvesseloverfilling – Make sure that there is no furtherfilling – Check level in the vessel S603 – Operating voltage below specifiedrange – Check electrical connection – if necessary, increase operating voltage Overfilling Impermissible operating voltage Rectification VEGAPULS 68 • 4 … 20 mA/HART two-wire 36535-EN-140209 Code Text message 60 – Check operating voltage – Carry out a reset – Disconnect operating voltagebriefly 9 Diagnosis, asset management and service Maintenance The following table shows the error codes and text messages in the status message "Maintenance" and provides information on causes as well as corrective measures. Code Cause Rectification M500 – With the reset to delivery status, the data could not be restored – Repeat reset – LoadXMLfilewithsensor data into the sensor M501 – Hardware error EEPROM – Exchanging the electronics – Send instrument for repair M502 – Hardware error EEPROM – Exchanging the electronics – Send instrument for repair M503 Reliability too low – The echot/noise ratio is the small for a reliable measurement – Check installation and process conditions – Clean the antenna – Change polarisation direction – Use instrument with higher sensitivity M504 – Hardware defect – Check connections – Exchanging the electronics – Send instrument for repair M505 – Level echo can no longer be detected – Clean the antenna – Use a more suitable antenna/sensor – Remove possible false echoes – Optimizesensorposition and orientation Text message Error with the reset delivery status Error in the non-active linearization table Error in the diagnosis memory Error on an device interface 36535-EN-140209 No echo available 9.4 Rectify faults Reaction when malfunctions occur The operator of the system is responsible for taking suitable measures to rectify faults. Procedure for fault rectification Thefirstmeasuresare: • • • Evaluation of fault messages, for example via the display and adjustment module Checking the output signal Treatment of measurement errors VEGAPULS 68 • 4 … 20 mA/HART two-wire 61 9 Diagnosis, asset management and service Further comprehensive diagnostics options are available with a PC with PACTware and the suitable DTM. In many cases, the reasons can bedeterminedinthiswayandfaultsrectified. Check the 4 … 20 mA signal Connect a multimeter in the suitable measuring range according to the wiring plan. The following table describes possible errors in the current signal and helps to remove them: Error Rectification 4 … 20 mA signal – Fluctuations of not stable the measured variable – Set damping according to the instrument via the display and adjustment module or PACTware/ DTM 4 … 20 mA signal – Electrical conmissing nection faulty – Check connection according to chapter "Connection steps" and if necessary, correct according to chapter "Wiring plan" – Voltage supply missing – Check cables for breaks; repair if necessary – Operating voltage too low or load resistance too high – Check, adapt if necessary – Electronics module in the sensor defective – Exchange the instrument or send it in for repair Current signal greater than 22 mA or less than 3.6 mA Treatment of measurement errors with bulk solids Cause The below tables show typical examples for application-relevant measurement errors with bulk solids. There are two measurement errors: • • • Constant level Filling Emptying Level The images in column "Errorpattern" show the real level with a broken line and the level displayed by the sensor as a continuous line. 1 2 0 time Real level Level displayed by the sensor Notes: • 62 Wherever the sensor displays a constant value, the reason could also be the fault setting of the current output to "Hold value" VEGAPULS 68 • 4 … 20 mA/HART two-wire 36535-EN-140209 1 2 9 Diagnosis, asset management and service • In case of a too low level indication, the reason could be a line resistance that is too high Measurement error with constant level 1. Measured value shows a too low or too high level Error pattern Level Fault description 2. Measured value jumps towards 100 % 0 Rectification – Adapt min./max. adjustment – Wronglinearizationcurve – Adaptlinearizationcurve – Due to the process, the amplitude of the product echo sinks – A false signal suppression was not carried out – Carry out a false signal suppression – Amplitude or position of a false echo has changed (e.g. condensation, buildup); false signal suppression no longer matches – Determine the reason for the changed false echoes, carry out false signal suppression, e.g. with condensation Cause Rectification time Level 0 Cause – Min./max. adjustment not correct time Measurementerrorduringfilling 3. Measured value jumps towards 0 % duringfilling Error pattern Level Fault description 0 time – Amplitude of a multiple echo – Check parameter "Application", (vessel top - product surface) is especially vessel top, type larger than the level echo of medium, dished end, high dielectric constant, adapt if necessary – The level echo cannot be distin- – Remove/reduce false echo: guished from the false echo at minimizeinterferinginstallaa false echo position (jumps to tionsbychangingthepolarizamultiple echo) tion direction – Chose a more suitable installation position 4. Measured valuefluctuatesaround 10 … 20 % Level – Transversereflectionfroman extraction funnel, amplitude of thetransversereflectionlarger than the level echo 0 time – Direct sensor to the opposite funnel wall, avoid crossing with thefillingstream – Various echoes from an uneven – Check parameter "Type of product surface, e.g. a material medium" and adapt, if necescone sary – Optimizeinstallationposition and sensor orientation – Select a more suitable installationposition,optimizesensor orientation, e.g. with a swivelling holder 36535-EN-140209 – Reflectionsfromtheproduct surface via the vessel wall (deflection) VEGAPULS 68 • 4 … 20 mA/HART two-wire 63 9 Diagnosis, asset management and service 5. Measured value jumps sporadically to 100%duringfilling Error pattern Level Fault description 0 time Cause Rectification – Changing condensation or con- – Carry out a false signal suptamination on the antenna pression or increase false signal suppression with condensation/contamination in the close range by editing – With bulk solids use radar sensor with purging air connection orflexibleantennacover Measurement error during emptying 7. Measured value jumps sporadically towards 100 % during emptying 8. Measured valuefluctuatesaround 10 … 20 % Level Error pattern 0 time Level 6. Measured value remains unchanged in the close range during emptying 0 time Level Fault description 0 time Cause Rectification – False echo larger than the level – Remove false echoes in the echo close range. Check: Antenna must protrude out of the socket – Level echo too small – Remove contamination on the antenna – Minimizeinterferinginstallations in the close range by changingthepolarization direction – After removing the false echoes, the false signal suppression must be deleted. Carry out a new false signal suppression – Changing condensation or con- – Carry out false signal supprestamination on the antenna sion or increase false signal suppression in the close range by editing – With bulk solids use radar sensor with purging air connection orflexibleantennacover – Various echoes from an uneven – Check parameter "Type of product surface, e.g. an extracmedium" and adapt, if necestion funnel sary – Optimizeinstallationposition – Reflectionsfromtheproduct and sensor orientation surface via the vessel wall (deflection) Reaction after fault rectification Depending on the reason for the fault and the measures taken, the steps described in chapter "Setup" must be carried out again or must be checked for plausibility and completeness. 24 hour service hotline Should these measures not be successful, please call in urgent cases the VEGA service hotline under the phone no. +49 1805 858550. Sinceweofferthisserviceworldwide,thesupportisprovidedin English. The service itself is free of charge, the only costs involved are the normal call charges. 64 VEGAPULS 68 • 4 … 20 mA/HART two-wire 36535-EN-140209 The hotline is also available outside normal working hours, seven days a week around the clock. 9 Diagnosis, asset management and service 9.5 Exchanging the electronics module If the electronics module is defective, it can be replaced by the user. In Ex applications, only instruments and electronics modules with appropriate Ex approval may be used. If there is no electronics module available on site, the electronics module can be ordered through the agency serving you. The electronicsmodulesareadaptedtotherespectivesensoranddifferinsignal output or voltage supply. The new electronics module must be loaded with the default settings of the sensor. These are the options: • • In the factory Or on site by the user In both cases, the serial number of the sensor is needed. The serial numbers are stated on the type label of the instrument, on the inside of the housing as well as on the delivery note. Whenloadingonsite,firstofalltheorderdatamustbedownloaded from the Internet (see operating instructions manual "Electronics module"). 9.6 Software update The following components are required to update the sensor software: • • • • • Sensor Voltage supply Interface adapter VEGACONNECT PC with PACTware Currentsensorsoftwareasfile Youcanfindtheactualsensorsoftwareaswellasdetailedinformation of the procedure under "www.vega.com/downloads" and "Software". Youcanfindinformationabouttheinstallationinthedownloadfile. Caution: Instruments with approvals can be bound to certain software versions.Thereforemakesurethattheapprovalremainseffectivewitha software update. Youcanfinddetailedinformationonwww.vega.com/downloads and "Approvals". 36535-EN-140209 9.7 How to proceed if a repair is needed Youcanfindarepairformaswellasdetailedinformationonhowto proceed under www.vega.com/downloads and "Formsandcertificates". By doing this you help us carry out the repair quickly and without having to call back for needed information. If a repair is necessary, please proceed as follows: • Printandfilloutoneformperinstrument VEGAPULS 68 • 4 … 20 mA/HART two-wire 65 9 Diagnosis, asset management and service • • • Clean the instrument and pack it damage-proof Attach the completed form and, if need be, also a safety data sheet outside on the packaging Please contact the agency serving you to get the address for thereturnshipment.Youcanfindtheagencyonourhomepage www.vega.com. 36535-EN-140209 66 VEGAPULS 68 • 4 … 20 mA/HART two-wire 10 Dismounting 10 Dismounting 10.1 Dismounting steps Warning: Before dismounting, be aware of dangerous process conditions such as e.g. pressure in the vessel or pipeline, high temperatures, corrosive or toxic products etc. Take note of chapters "Mounting" and "Connecting to power supply" and carry out the listed steps in reverse order. 10.2 Disposal The instrument consists of materials which can be recycled by specialised recycling companies. We use recyclable materials and have designed the parts to be easily separable. Correctdisposalavoidsnegativeeffectsonhumansandtheenvironment and ensures recycling of useful raw materials. Materials: see chapter "Technicaldata" If you have no way to dispose of the old instrument properly, please contact us concerning return and disposal. 36535-EN-140209 WEEE directive 2002/96/EG This instrument is not subject to the WEEE directive 2002/96/EG and the respective national laws. Pass the instrument directly on to a specialised recycling company and do not use the municipal collecting points. These may be used only for privately used products according to the WEEE directive. VEGAPULS 68 • 4 … 20 mA/HART two-wire 67 11 Supplement 11 Supplement 11.1 Technical data General data 316L corresponds to 1.4404 or 1.4435 Materials, wetted parts Ʋ Processfitting Ʋ Process seal Ʋ Antenna Ʋ Antenna impedance cone Ʋ seal, antenna system Materials, non-wetted parts Ʋ Plastic housing Ʋ Aluminium die-casting housing Ʋ Stainless steel housing Ʋ Seal between housing and housing cover Ʋ Inspection window in housing cover (optional) Ʋ Ground terminal Ohmic contact Processfittings Ʋ Pipe thread, cylindrical (ISO 228 T1) Ʋ American pipe thread, tapered Ʋ Flanges Weights Ʋ Instrument (depending on housing, processfittingandantenna) Ʋ Antenna extension Length antenna extension max. 316L, Hastelloy C22, Monell Alloy On site (instruments with thread: Klingersil C-4400 is attached) 316L, Hastelloy C22, Tantalum, 316L electropolished, stainless steel investment casting 1.4848, Monell Alloy, 316L Safecoat coated PTFE TFM 1600 or PTFE INOFLON M290, PP, PEEK, ceramic (99.7 % Al2O3) FKM(SHSFPM70C3GLT),FFKM(Kalrez6375),FFKM (Kalrez2035),FFKM(Kalrez6230-FDA),graphite (99.9 %) plastic PBT (Polyester) Aluminium die-casting AlSi10Mg, powder-coated - basis: Polyester 316L NBR (stainless steel housing, precision casting), silicone (aluminium/plastic housing; stainless steel housing, electropolished) Polycarbonate 316L Betweengroundterminal,processfittingandantenna G1½ according to DIN 3852-A 1½ NPT, 2 NPT DIN from DN 25, ANSI from 1" approx. 2 … 17.2 kg (4.409 … 37.92 lbs) 1.6 kg/m (1.157 lbs/ft) 5.85 m (19.19 ft) Torque for NPT cable glands and Conduit tubes 68 max. 10 Nm (7.376 lbf ft) max. 50 Nm (36.88 lbf ft) VEGAPULS 68 • 4 … 20 mA/HART two-wire 36535-EN-140209 Ʋ Plastic housing Ʋ Aluminium/Stainless steel housing 11 Supplement Input variable Measured variable The measured quantity is the distance between process fittingofthesensorandproductsurface.Thereference plane is the seal surface on the hexagon or the lower sideoftheflange. 1 3 4 2 Fig. 53: Data of the input variable 1 2 3 4 Reference plane Measured variable, max. measuring range Antenna length Usefulmeasuringrange Max. measuring range 75 m (246.1 ft) Recommended meas. range depending on the antenna diameter Ʋ ø 40 mm (1.575 in) Ʋ ø 48 mm (1.89 in) Ʋ ø 75 mm (2.953 in) Ʋ ø 95 mm (3.74 in) 36535-EN-140209 Ʋ Parabolic antenna up to 15 m (49.21 ft) up to 20 m (65.62 ft) up to 40 m (131.2 ft) up to 50 m (164 ft) up to 75 m (246.1 ft) Output variable Output signal 4 … 20 mA/HART Signal resolution 0.3 µA Range of the output signal Resolution, digital 3.8 … 20.5 mA/HART (default setting) < 1 mm (0.039 in) Failure signal current output (adjustable) mA-value unchanged 20.5 mA, 22 mA, < 3.6 mA Max. output current 22 mA VEGAPULS 68 • 4 … 20 mA/HART two-wire 69 11 Supplement Starting current ≤3.6mA;≤10mAfor5msafterswitchingon Damping (63 % of the input variable), adjustable 0 … 999 s Load see load diagram under Power supply HART output values according to HART 7.01) Ʋ PV (Primary Value) Distance to the level Ʋ SV (Secondary Value) Level as percentage value Ʋ TV (Third Value) Linearised percentage value Ʋ QV (Fourth Value) Scaled measured value FulfilledHARTspecification Further information of Manufacturer ID, Device ID, Device Revision 7.0 See website of HART Communication Foundation Accuracy (according to DIN EN 60770-1) Process reference conditions according to DIN EN 61298-1 Ʋ Temperature +18 … +30 °C (+64 … +86 °F) Ʋ Relative humidity 45 … 75 % Ʋ Air pressure 860 … 1060 mbar/86 … 106 kPa (12.5 … 15.4 psig) Ʋ Min. distance to installations > 200 mm (7.874 in) Ʋ Falsereflections Biggest false signal, 20 dB smaller than the useful signal Installation reference conditions Ʋ Reflector Planeplatereflector Deviation with liquids See following diagrams 10 mm (0.394 in) 2 mm (0.079 in) 0 - 2 mm (- 0.079 in) 1,0 m (3.28 ft) - 10 mm (- 0.394 in) 1 2 3 Fig. 54: Deviation under reference conditions 1 2 3 Reference plane Antenna edge Recommended measuring range ≤±1mm DeviationunderEMCinfluence ≤±30mm Deviation with bulk solids 1) 70 The values depend to a great extent on the application. Bindingspecificationsarethusnotpossible. Default values, can be assigned individually VEGAPULS 68 • 4 … 20 mA/HART two-wire 36535-EN-140209 Repeatability 11 Supplement Variablesinfluencingmeasurementaccuracy Specificationsapplytothedigitalmeasuredvalue Temperature drift - Digital output ±3mm/10Krelatingtothemax.measuringrangeor max. 10 mm Additional deviation through electromag- <±50mm netic interference acc. to EN 61326 Specificationsapplyalsotothecurrentoutput Temperature drift - Current output ±0.03%/10Krelatingtothe16mAspanmax.±0.3% Deviation on the current output due to strong, high frequency electromagnetic fieldsacc.toEN61326 <±150µA Deviation on the current output through analogue/digital conversion <±15µA Characteristics and performance data Measuring frequency K-band(26GHztechnology) Measuring cycle time approx. Step response time2) Beam angle3) Ʋ Horn antenna ø 40 mm (1.575 in) Ʋ Horn antenna ø 48 mm (1.89 in) Ʋ Horn antenna ø 75 mm (2.953 in) Ʋ Horn antenna ø 95 mm (3.74 in) 700 ms ≤3s 20° 15° 10° 8° Ʋ Parabolic antenna 3° Ʋ Average spectral transmission power density -14dBm/MHzEIRP Emitted HF power (depending on the parameter adjustment)4) Ʋ Max. spectral transmission power density Ʋ Max. power density in a distance of 1m +43dBm/50MHzEIRP < 1 µW/cm² Ambient conditions Ambient, storage and transport tempera- -40 … +80 °C (-40 … +176 °F) ture 36535-EN-140209 Process conditions Fortheprocessconditions,pleasealsonotethespecificationsonthetypelabel.Thelowestvalue always applies. Time span after a sudden measuring distance change by max. 0.5 m in liquid applications, max 2 m with bulk solidsapplications,untiltheoutputsignalhastakenforthefirsttime90%ofthefinalvalue(IEC61298-2). 3) Outsidethespecifiedbeamangle,theenergyoftheradarsignalhasalevelwhichisreducedby50%(-3dB) 4) EIRP: Equivalent Isotropic Radiated Power 2) VEGAPULS 68 • 4 … 20 mA/HART two-wire 71 11 Supplement Seal Antenna impedance cone Process temperature (measured on the process fitting) FKM (SHS FPM 70C3 GLT) PTFE -40 … +130 °C (-40 … +266 °F) PTFE5) -40 … +200 °C (-40 … +392 °F) PEEK -40 … +200 °C (-40 … +392 °F) PTFE -20 … +130 °C (-4 … +266 °F) PEEK -20 … +250 °C (-4 … +482 °F) PTFE -15 … +130 °C (5 … +266 °F) PEEK -15 … +210 °C (5 … +410 °F) PTFE -15 … +130 °C (5 … +266 °F) PEEK -15 … +250 °C (5 … +482 °F) Graphite Ceramic -196 … +450 °C (-321 … +842 °F) Graphite(processfitting Hastelloy C 22) Ceramic -196 … +400 °C (-321 … +752 °F) 6) FFKM(Kalrez6375) FFKM(Kalrez2035) FFKM(Kalrez6230) Vessel pressure - horn antenna Ʋ Antenna impedance cone PTFE -1 … 40 bar (-100 … 4000 kPa/-14.5 … 580 psig) Ʋ Antenna impedance cone PEEK -1 … 100 bar (-100 … 10000 kPa/-14.5 … 1450 psig) Ʋ Antenna impedance cone PP -1 … 3 bar (-100 … 300 kPa/-14.5 … 43.5 psig) Ʋ Antenna impedance cone ceramic -1 … 160 bar (-100 … 16000 kPa/-14.5 … 2320 psig) Vessel pressure - parabolic antenna -1 … 6 bar (-100 … 6000 kPa/-14.5 … 870 psig) Vesselpressurerelatingtotheflange nominal stage see supplementary instructions manual "Flanges accordingtoDIN-EN-ASME-JIS" Vessel pressure with swivelling holder -1 … 1 bar (-100 … 100 kPa/-14.5 … 14.5 psig) Vibration resistance Ʋ Horn antenna 4gat5…200HzaccordingtoEN60068-2-6(vibration with resonance) Ʋ Parabolic antenna 1gat5…200HzaccordingtoEN60068-2-6(vibration with resonance) Shock resistance Ʋ Horn antenna 100 g, 6 ms according to EN 60068-2-27 (mechanical shock) Ʋ Parabolic antenna 25 g, 6 ms according to EN 60068-2-27 (mechanical shock) Data on rinsing air connection Max. permissible pressure 6 bar (87.02 psig) Air volume with horn antenna, depending on pressure (recommended area) Withoutrefluxvalve Withrefluxvalve 0.5 bar (7.25 psig) 3.3 m /h 1.2 m3/h 5) 6) 72 3 Not with steam Not with steam VEGAPULS 68 • 4 … 20 mA/HART two-wire 36535-EN-140209 Pressure 11 Supplement Pressure Withoutrefluxvalve Withrefluxvalve 0.6 bar (8.70 psig) 3.5 m3/h 1.4 m3/h 0.7 bar (10.15 psig) 3.7 m3/h 1.7 m3/h 0.8 bar (11.60 psig) 3.9 m /h 1.8 m3/h 0.9 bar (13.05 psig) 4.0 m /h 2.1 m3/h 1 bar (14.5 psig) 4.2 m3/h 2.2 m3/h 1.5 bar (21.76 psig) 5.0 m3/h 3.2 m3/h 2 bar (29.0 psig) 5.5 m /h 4.5 m3/h 3 3 3 Air volume with parabolic antenna, depending on pressure (recommended area) Pressure Withoutrefluxvalve Withrefluxvalve 0.5 bar (7.25 psig) 3.0 m3/h 1.2 m3/h 0.6 bar (8.70 psig) 3.2 m3/h 1.4 m3/h 0.7 bar (10.15 psig) 3.4 m /h 1.7 m3/h 0.8 bar (11.60 psig) 3.5 m3/h 1.9 m3/h 0.9 bar (13.05 psig) 3.6 m3/h 2.0 m3/h 1 bar (14.5 psig) 3.8 m /h 2.2 m3/h 1.5 bar (21.76 psig) 4.3 m /h 3.5 m3/h 2 bar (29.0 psig) 4.8 m3/h 4.0 m3/h Thread Closure with Ʋ Non-Ex Ʋ Ex 3 3 3 G⅛ Dust protection cover of PE Threaded plug of 316Ti Refluxvalve-unmounted(asoptionwithnon-Exversion,includedinthescopeofdeliverywithEx version) Ʋ Material Ʋ Seal Ʋ for tube diameter Ʋ opening pressure Ʋ Nominal pressure stage 316Ti FKM(SHSFPM70C3GLT),FFKM(Kalrez6375) 6 mm 0.5 bar (7.25 psig) PN 250 Electromechanical data - version IP 66/IP 67 and IP 66/IP 68; 0.2 bar Options of the cable entry Ʋ Cable gland 36535-EN-140209 Ʋ Cable entry Ʋ Blind plug M20 x 1.5 (cable: ø 5 … 9 mm) ½ NPT M20 x 1.5; ½ NPT Ʋ Closing cap M20 x 1.5; ½ NPT Ʋ Signal circuit Plug M12 x 1, according to ISO 4400, Harting HAN, 7/8" FF Plug options VEGAPULS 68 • 4 … 20 mA/HART two-wire 73 11 Supplement Ʋ Indication circuit M12 x 1 plug Wire cross-section (spring-loaded terminals) Ʋ Massive wire, cord Ʋ Stranded wire with end sleeve 0.2 … 2.5 mm² (AWG 24 … 14) 0.2 … 1.5 mm² (AWG 24 … 16) Electromechanical data - version IP 66/IP 68 (1 bar) Options of the cable entry Ʋ Cable gland with integrated connection cable Ʋ Cable entry Ʋ Blind plug Connection cable Ʋ Wire cross-section Ʋ Wire resistance Ʋ Tensile strength Ʋ Standard length Ʋ Max. length Ʋ Min. bending radius Ʋ Diameter approx. Ʋ Colour - Non-Ex version Ʋ Colour - Ex-version Display and adjustment module Display element Measured value indication Ʋ Number of digits Ʋ Sizeofdigits Adjustment elements Protection rating Ʋ unassembled Ʋ mounted into the housing without cover Materials Ʋ Housing Ʋ Inspection window M20 x 1.5 (cable: ø 5 … 9 mm) ½ NPT M20 x 1.5; ½ NPT 0.5 mm² (AWG 20) <0.036Ω/m < 1200 N (270 lbf) 5 m (16.4 ft) 180 m (590.6 ft) 25 mm (0.984 in) with 25 °C (77 °F) 8 mm (0.315 in) Black Blue Display with backlight 5 W x H = 7 x 13 mm 4 keys IP 20 IP 40 ABS Polyester foil Configuration,connectioncable Cable length max. 74 4-wire, screened 25 m VEGAPULS 68 • 4 … 20 mA/HART two-wire 36535-EN-140209 Interface to the external display and adjustment unit Data transmission digital (I²C-Bus) 11 Supplement Integrated clock Date format Day.Month.Year TimezoneExfactory CET Time format 12 h/24 h Rate deviation max. 10.5 min/year Measurement electronics temerature Resolution 1 °C (1.8 °F) Accuracy ±1°C(1.8°F) Voltage supply Operating voltage UB Ʋ Non-Ex instrument 9.6 … 35 V DC Ʋ Ex-ia instrument 9.6 … 30 V DC Ʋ Ex-d-ia instrument 14 … 35 V DC Ʋ Ex-d-ia instrument with ship approval 15 … 35 V DC Ʋ Non-Ex instrument 16 … 35 V DC Operating voltage UB - illuminated display and adjustment module Ʋ Ex-ia instrument 16 … 30 V DC Ʋ Ex-d-ia instrument 20 … 35 V DC Interpolation protection Integrated Permissible residual ripple - Non-Ex, Ex-ia instrument Ʋ for 9.6 V< UB < 14 V ≤0.7Veff(16…400Hz) Ʋ for 18 V< UB < 36 V ≤1.0Veff(16…400Hz) Permissible residual ripple - Ex-d-ia instrument Ʋ for 18 V< UB < 36 V ≤1Veff(16…400Hz) Ʋ Calculation (UB - Umin)/0.022 A Load resistor Ʋ Example - Non-Ex instrument with UB= 24 V DC (24V-9.6V)/0.022A=655Ω Electrical protective measures Protection rating Housing material Version IP-protection class NEMA protection Plastic Single chamber IP 66/IP 67 NEMA4X Double chamber IP 66/IP 67 NEMA4X Single chamber IP 66/IP 68 (0.2 bar) NEMA 6P Double chamber IP 66/IP 67 NEMA4X IP 68 (1 bar) NEMA 6P 36535-EN-140209 Aluminium VEGAPULS 68 • 4 … 20 mA/HART two-wire IP 68 (1 bar) IP 66/IP 68 (0.2 bar) NEMA 6P NEMA 6P 75 11 Supplement Housing material Version IP-protection class NEMA protection Stainless steel, electropolished Single chamber IP 66/IP 68 (0.2 bar) NEMA 6P Stainless steel, investment Single chamber casting IP 66/IP 68 (0.2 bar) NEMA 6P IP 66/IP 67 NEMA4X IP 68 (1 bar) NEMA 6P IP 68 (1 bar) Double chamber Overvoltage category Protection class IP 66/IP 68 (0.2 bar) NEMA 6P NEMA 6P III III Approvals Instrumentswithapprovalscanhavedifferenttechnicaldatadependingontheversion. For that reason the associated approval documents of these instruments have to be carefully noted. They are part of the delivery or can be downloaded under www.vega.com, "VEGATools" and "Instrument search" as well as via www.vega.com/downloads and "Approvals". Overvoltage protection Max. permissible current per circuit 0.6 A Li per circuit 0 mH Ri per circuit Ci per circuit Response voltage Response time Nominal leakage current <3.6Ω 0 nF 41 V DC < 10-11 s < 10 kA (8/20 µs) 11.2 Dimensions The following dimensional drawings represent only an extract of all possible versions. Detailed dimensional drawings can be downloaded at www.vega.com/downloads under "Drawings". 36535-EN-140209 76 VEGAPULS 68 • 4 … 20 mA/HART two-wire 11 Supplement Plastic housing ~ 69 mm (2.72") ø 79 mm (3.11") ~ 84 mm (3.31") ø 79 mm (3.11") M20x1,5/ ½ NPT 112 mm (4.41") 112 mm (4.41") M16x1,5 M20x1,5/ ½ NPT 1 2 Fig.55:HousingversionsinprotectionIP66/IP68(0.2bar)-withintegrateddisplayandadjustmentmodulethe housingis9mm/0.35inhigher 1 2 Single chamber version Double chamber version Aluminium housing ~ 116 mm (4.57") ~ 87 mm (3.43") ø 86 mm (3.39") ø 86 mm (3.39") 120 mm (4.72") 116 mm (4.57") M16x1,5 M20x1,5 M20x1,5/ ½ NPT 1 M20x1,5/ ½ NPT 2 Fig.56:HousingversionsinprotectionIP66/IP68(0.2bar)-withintegrateddisplayandadjustmentmodulethe housingis9mm/0.35inhigher Single chamber version Double chamber version 36535-EN-140209 1 2 VEGAPULS 68 • 4 … 20 mA/HART two-wire 77 11 Supplement Aluminium housing in protection rating IP 66/IP 68 (1 bar) ~ 105 mm (4.13") ~ 150 mm (5.91") ø 86 mm (3.39") ø 86 mm (3.39") 120 mm (4.72") 116 mm (4.57") M16x1,5 M20x1,5 M20x1,5 M20x1,5/ ½ NPT 1 2 Fig.57:HousingversionsinprotectionIP␣66/IP␣68(1␣bar)-withintegrateddisplayandadjustmentmodulethe housingis9␣mm/0.35␣inhigher 1 2 Single chamber version Double chamber version Stainless steel housing ~ 87 mm (3.43") ~ 69 mm (2.72") ø 79 mm (3.11") ~ 59 mm (2.32") ø 80 mm (3.15") ø 86 mm (3.39") M20x1,5/ ½ NPT M20x1,5/ ½ NPT 1 2 120 mm (4.72") 112 mm (4.41") 117 mm (4.61") M16x1,5 M20x1,5/ ½ NPT 3 Fig.58:HousingversionsinprotectionIP66/IP68(0.2bar)-withintegrateddisplayandadjustmentmodulethe housingis9mm/0.35inhigher 1 2 3 Single chamber version, electropolished Single chamber version, precision casting Double chamber version, precision casting 36535-EN-140209 78 VEGAPULS 68 • 4 … 20 mA/HART two-wire 11 Supplement Stainless steel housing in protection rating IP 66/IP 68, 1 bar ~ 93 mm (3.66") ~ 103 mm (4.06") ø 80 mm (3.15") ~ 105 mm (4.13") ø 79 mm (3.11") ø 86 mm (3.39") M20x1,5/ ½ NPT 120 mm (4.72") 112 mm (4.41") 117 mm (4.61") M16x1,5 M20x1,5 1 M20x1,5/ ½ NPT 2 3 Fig.59:HousingversionsinprotectionIP␣66/IP␣68(1␣bar)-withintegrateddisplayandadjustmentmodulethe housingis9␣mm/0.35␣inhigher 1 2 3 Single chamber version, electropolished Single chamber version, precision casting Double chamber version, precision casting G1½A / 1½ NPT x 100 ø40 3" 216 ø75 2" 4" x y 1½" inch 1½" 2" 3" 4" 120 430 y 3.94" 4.72" 8.50" 16.93" ø48 ø95 x ø1.58" ø1.89" ø2.95" ø3.74" y y mm 22 mm (0.87") 2 144 mm (5.67") 38 mm (1.50") 1 SW 46 mm (1.81") 22 mm (0.87") VEGAPULS 68, horn antenna in threaded version 36535-EN-140209 x Fig.60:VEGAPULS68,hornantennainthreadedversion 1 2 Standard With temperature adapter up to 250 °C VEGAPULS 68 • 4 … 20 mA/HART two-wire 79 11 Supplement VEGAPULS68,hornantennainflangeversion 2 165 mm (6.5") y 60 mm (2.36") 1 x mm y x inch ø48 2" 1½" 100 ø40 3" 216 ø75 2" 4" 120 430 ø95 1½" 3" 4" y 3.94" 4.72" 8.50" 16.93" x ø1.58" ø1.89" ø2.95" ø3.74" Fig.61:VEGAPULS68,hornantennainflangeversion 1 2 Standard With temperature adapter up to 250 °C 36535-EN-140209 80 VEGAPULS 68 • 4 … 20 mA/HART two-wire 11 Supplement 260 mm (10.24") VEGAPULS68,hornantennainflangeversion450°C y 120 216 287 y inch 4.72" 2" 3" 8.50" 4" 11.30" x ø 48 ø 75 ø 95 y mm 2" 3" 4" x ø 1.89" ø 2.95" ø 3.74" x 36535-EN-140209 Fig.62:VEGAPULS68,hornantennainflangeversionwithtemperatureadapterupto450°C VEGAPULS 68 • 4 … 20 mA/HART two-wire 81 11 Supplement VEGAPULS 68, horn antenna and swivelling holder max. 15 ° (0.59") 2 x 100 ø 40 3" 216 ø 75 2" x y 1½" 4" inch 1½" 2" 3" 4" 120 430 y 3.94" 4.72" 8.50" 16.93" ø 48 ø 95 20 m m (0.79 ") mm x ø 1.58" ø 1.89" ø 2.95" ø 3.74" y y 20 m m (0.79 ") 146 m m (5.7 5") 40 m m (1.58 ") 1 x Fig.63:VEGAPULS68,hornantennaandswivellingholder 1 2 Standard With temperature adapter up to 250 °C 36535-EN-140209 82 VEGAPULS 68 • 4 … 20 mA/HART two-wire 11 Supplement VEGAPULS68,hornantennaandswivellingholder,threadedfitting max. 10° (0.39") 2 102,2 m m (4.02") 159,6 mm (6.28") 53,6 mm (2.11") 1 SW 70 mm (2.76") G2 / 2NPT 102,2 m m (4.02") ø 40 / 4 8 (1.57" / mm 1.89") ø 40 / 4 8 (1.57" / mm 1.89") Fig.64:VEGAPULS68,hornantennaandswivellingholder,threadedfitting Standard With temperature adapter up to 250 °C 36535-EN-140209 1 2 VEGAPULS 68 • 4 … 20 mA/HART two-wire 83 11 Supplement VEGAPULS 68, parabolic antenna and swivelling holder max. 15 ° (0.59") 1 ø 243 130 m m (5.1 2") 120 m m (4.7 2") 40 m m (1.58 ") 2 mm (9 .57") Fig.65:VEGAPULS68,parabolicantennaandswivellingholder 1 2 Standard With temperature adapter up to 200 °C 36535-EN-140209 84 VEGAPULS 68 • 4 … 20 mA/HART two-wire 11 Supplement 11.3 Industrial property rights VEGA product lines are global protected by industrial property rights. Further information see www.vega.com. Only in U.S.A.: Further information see patent label at the sensor housing. VEGA Produktfamilien sind weltweit geschützt durch gewerbliche Schutzrechte. Nähere Informationen unter www.vega.com. Les lignes de produits VEGA sont globalement protégées par des droits de propriété intellectuelle. Pour plus d'informations, on pourra se référer au site www.vega.com. VEGA lineas de productos están protegidas por los derechos en el campo de la propiedad industrial. Para mayor información revise la pagina web www.vega.com. Линии продукции фирмы ВЕГА защищаются по всему миру правами на интеллектуальную собственность. Дальнейшую информацию смотрите на сайте www.vega.com. VEGA系列产品在全球享有知识产权保护。 进一步信息请参见网站<www.vega.com>。 11.4 Trademark 36535-EN-140209 All the brands as well as trade and company names used are property of their lawful proprietor/ originator. VEGAPULS 68 • 4 … 20 mA/HART two-wire 85 INDEX INDEX A Adjustment 46, 47 Adjustment system 38 Agitator 23 Application – Bulk solid 43 – Liquid 39 – Standpipe 39 C Check output signal 62 Connecting – Electrically 29 – Mechanically 13 – To the PC 53 Connection – Cable 28 – Steps 29 – Technology 29 Curve indication – Echo curve 48 – False signal suppression 48 D Default values 51 Deviation 62 E Echo curve memory 57 Echo curve of the setup 48 EDD (Enhanced Device Description) 56 Electronics and terminal compartment, single chamber housing 31 Error codes 60 Event memory 57 M Main menu 38 Meas. reliability 47 Measured value memory 57 N NAMUR NE 107 59, 61 O OverfillprotectionaccordingtoWHG50 P Peak value indicator 47 Polarisation 15 R Reflectionproperties39 Repair 65 Reset 50 S Service hotline 64 Socket 18 Status messages - NAMUR NE 107 58 Subsurface enclosure 25 T Type label 8 V Vessel form 45 Vessel height 45 Vessel installations 23 Vessel insulation 24 F False signal suppression 48 Faultrectification61 Functional principle 10 G Grounding 28 36535-EN-140209 H HART resistor 53 L Linearisation curve 50 86 VEGAPULS 68 • 4 … 20 mA/HART two-wire 36535-EN-140209 Notes VEGAPULS 68 • 4 … 20 mA/HART two-wire 87 All statements concerning scope of delivery, application, practical use and operating conditions of the sensors and processing systems correspond to the information available at the time of printing. Subject to change without prior notice © VEGA Grieshaber KG, Schiltach/Germany 2014 VEGA Grieshaber KG Am Hohenstein 113 77761 Schiltach Germany Phone +49 7836 50-0 Fax +49 7836 50-201 E-mail: [email protected] www.vega.com 36535-EN-140209 Printing date: