Vega VEGAPULS 64 Operating Instructions Manual page 36

6 Set up with the display and adjustment module
36
– 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
•
Properties, sensor:
– Higher measurement speed through less averaging
– Sporadic false echoes are suppressed
VEGAPULS 64 • HART and accumulator pack