31
7 Set up with the integrated display and adjustment unit
VEGAPULS 31 • Two-wire 4 … 20 mA/HART
57820-EN-191014
– Sensor accepts all measured value changes within the measur-
ing range immediately
– High sensitivity to interference, because virtually no averaging
For "
Bulk solid
" the applications are based on the following character-
istics:
Silo (slender and high)
•
Process/measurement conditions:
– Filling aperture too close to the sensor
– System noise in completely empty silo increased
– Interfering reflections due to weld seams on the vessel
•
Properties, sensor:
– Stable measured values through higher averaging
– False signal suppression recommended during setup
Bunker (large-volume)
•
Process/measurement conditions:
– Large distance to the medium
– Large angles of repose
– Interfering reflections due to structured vessel walls or internals
•
Properties, sensor:
– Mean averaging
– High measured value jumps are accepted
Heap (point measurement/profile detection)
•
Process/measurement conditions:
– Measured value jumps, e.g. by the profile of the heap or trav-
erses
– Large angles of repose
– Measurement near the filling stream
– Sensor mounting on movable conveyor belts
•
Properties, sensor:
– Mean averaging
– High measured value jumps are accepted
Crusher
•
Process/measurement conditions:
– Measured value jumps, e.g. through truck loading
– Fast reaction time
– Large distance to the medium
– Interfering reflections due to internal installations or wear and
protective devices
•
Properties, sensor:
– Little averaging
– Max. reaction speed, very high measured value jumps are
accepted
Demonstration
•
Adjustment for all applications which are not typically level meas-
urements
– Instrument demonstration
– Object recognition/monitoring (additional settings required)
Application - bulk solid
