Vega VEGAPULS 68 - Page 46

46
6 Set up with the display and adjustment module
VEGAPULS 68 • Foundation Fieldbus
36538-EN-170405
Storage tank on ships (Cargo Tank):
•
Mediumspeed:slowlling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llingpossible
– Vesselislled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
Dosing vessel:
•
Setup:allvesselsizespossible
•
Medium speed:
– Fastllingandemptying
– Vesselislledandemptiedveryoften
•
Vessel: tight installation situation
•
Process/measurement conditions:
– Condensation, buildup on the antenna
– Foam generation
•
Properties, sensor:
– Measurementspeedoptimizedbyvirtuallynoaveraging
– Sporadic false echoes are suppressed
– False signal suppression recommended
Standpipe:
•
Mediumspeed:veryfastllingandemptying
•
Vessel:
– Vent hole
– Joinslikeanges,weldjoints
– Shifting of the running time in the tube
•
Process/measurement conditions:
– Condensation