Download Operating Instructions VEGAPULS 69

11 Supplement
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 internal installations
> 200 mm (7.874 in)
Ʋ Falsereflections
Biggest false signal, 20 dB smaller than the useful signal
Installation reference conditions
Ʋ Reflector
Deviation
Flatplatereflector
See following diagrams
20 mm (0.787 in)
10 mm (0.394 in)
0
0,5 m (1.6 ft)
- 10 mm (- 0.394 in)
- 20 mm (- 0.787 in)
1
2
Fig. 46: Deviation under reference conditions
1
2
Reference plane
Measuring range end
Repeatability
≤±1mm
DeviationunderEMCinfluence
≤±50mm
Deviation with bulk solids
The values depend to a great extent on the application.
Bindingspecificationsarethusnotpossible.
Variablesinfluencingmeasurementaccuracy
Specificationsapplytothedigitalmeasuredvalue
Temperature drift - Digital output
±3mm/10K,max.10mm
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
47249-EN-140707
Deviation on the current output through
analogue/digital conversion
<±15µA
Characteristics and performance data
Measuring frequency
W-band(79GHztechnology)
VEGAPULS 69 • 4 … 20 mA/HART - four-wire
69