Vega VEGAPULS 67, Руководство по эксплуатации

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6 Set up with the display and adjustment module
VEGAPULS 67 • Profibus PA
36533-EN-170405
Storage tank with product circulation:
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Setup: large-volumed, upright cylindrical, spherical
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Medium speed: slow filling and emptying
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Installations: small, laterally mounted or large, top mounted stirrer
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Process/measurement conditions:
– Relatively smooth product surface
– High requirements on measurement accuracy
– Condensation
– Slight foam generation
– Overfilling possible
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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):
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Medium speed: slow filling and emptying
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Vessel:
– Installations in the bottom section (bracers, heating spirals)
– High sockets 200 … 500 mm, also with large diameters
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Process/measurement conditions:
– Condensation, buildup by movement
– Max. requirement on measurement accuracy from 95 %
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Properties, sensor:
– Low sensitivity to sporadic false echoes
– Stable and reliable measured values through averaging
– High accuracy
– False signal suppression required
Stirrer vessel (reactor):
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Setup: all vessel sizes possible
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Medium speed:
– Fast to slow filling possible
– Vessel is filled and emptied very often
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Vessel:
– Socket available
– Large agitator blades of metal
– Vortex breakers, heating spirals
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Process/measurement conditions:
– Condensation, buildup by movement
– Strong spout generation
– Very agitated surface, foam generation
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Properties, sensor:
– Higher measurement speed through less averaging
– Sporadic false echoes are suppressed
Dosing vessel:
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Setup: all vessel sizes possible
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Medium speed:
– Fast filling and emptying
– Vessel is filled and emptied very often
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Vessel: tight installation situation