Download Operating Instructions - VEGAPULS SR 68 - 4 ? 20 mA

3 Product description
-
Safety Manual (SIL) VEGAPULS SR 68 (optional)
Test certificate measuring accuracy, depending on the
instrument VEGAPULS SR 68 (optional)
Operating instructions manual "Indicating and adjustment
module" (optional)
Ex-specific "Safety instructions" (with Ex versions)
if necessary, further certificates
3.2 Principle of operation
Application area
The instrument is designed for level measurement of bulk solids even
under difficult process conditions. Its mechanical construction and
electronics are specially optimised for such applications. Many
application possibilities can be found in the food processing industry,
in plastics processing and steel production as well as in the building
industry.
The instrument is particularly suitable for average-size silos and
vessels.
The instrument is also suitable for applications in liquids.
The use of the instrument is possible with products with an εr value
≥1.5. The reachable value depends on the measurement conditions,
the antenna system, the standpipe or bypass.
Functional principle
The antenna of the radar sensor emits short radar pulses with a
duration of approx. 1 ns. These pulses are reflected by the product
and received by the antenna as echoes. The running 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.
3.3 Packaging, transport and storage
Packaging
Your instrument was protected by packaging during transport. Its
capacity to handle normal loads during transport is assured by a test
according to DIN EN 24180.
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 must be carried out under 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.
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VEGAPULS SR 68 • 4 … 20 mA/HART - four-wire
38295-EN-110209
Transport