Vega VEGAPULS 64 Operating Instructions Manual page 38

6 Set up with the display and adjustment module
38
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Process/measurement conditions:
– Condensation
– Smooth product surface
– High requirements on measurement accuracy
•
Properties, sensor:
– Low sensitivity to sporadic false echoes
– Stable and reliable measured values through averaging
– High accuracy
– Short reaction time of the sensor not required
- Storage tank with product circulation:
•
Setup: large-volumed, upright cylindrical, spherical
•
Medium speed: slow filling and emptying
•
Installations: small laterally mounted or large top mounted stirrer
•
Process/measurement conditions:
– Relatively smooth product surface
– High requirements on measurement accuracy
– Condensation
– Slight foam generation
– Overfilling possible
•
Properties, sensor:
– Low sensitivity to sporadic false echoes
– Stable and reliable measured values through averaging
– High accuracy, because not set for max. speed
– False signal suppression recommended
- Storage tank on ships (Cargo Tank):
•
Medium speed: slow filling and emptying
•
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:
– Low sensitivity to sporadic false echoes
– Stable and reliable measured values through averaging
– High accuracy
– False signal suppression required
- Stirrer vessel (reactor):
•
Setup: all vessel sizes possible
•
Medium speed:
– Fast to slow filling possible
– Vessel is filled and emptied very often
•
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
VEGAPULS 64 • 4 ... 20 mA/HART - two-wire