VEGA VEGAPULS 61 (≥ 2.0.0 - ≥ 4.0.0) 4 … 20 mA_HART - two-wire - Manual (Page 38)

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6 Set up with the indicating and adjustment module
VEGAPULS 61 • 4 … 20 mA/HART - two-wire
36499-EN-121011
– Fast filling and emptying
– Vessel is very often filled and emptied
•
Vessel: narrow installation situation
•
Process/measurement conditions:
– Condensation, buildup on the antenna
– Foam generation
Standpipe:
•
Product speed: very fast filling and emptying
•
Vessel:
– Vent hole
– Joins like flanges, weld joints
– Shifting of the running time in the tube
•
Process/measurement conditions:
– Condensation
– Buildup
Bypass:
•
Product speed:
– Fast up to slow filling with short up to long bypass tube possible
– Often the level is hold via a control facility
•
Vessel:
– Lateral outlets and inlets
– Joins like flanges, weld joints
– Shifting of the running time in the tube
•
Process/measurement conditions:
– Condensation
– Buildup
– Separation of oil and water possible
– Overfilling into the antenna possible
Plastic tank:
•
Vessel:
– Measurement fix mounted or integrated
– Measurement depending on the application through the vessel
top
– With empty vessel, the measurement can be carried out
through the bottom
•
Process/measurement conditions:
– Condensation on the plastic ceiling
– In outside facilities water and snow on the vessel top possible
Transportable plastic tank:
•
Vessel:
– Material and thickness different
– Measurement through the vessel top
•
Process/measurement conditions:
– Measured value jump with vessel change
Open water (gauge measurement):
•
Gauge rate of change: slow gauge change
•
Process/measurement conditions:
– Distance sensor to water surface to big