VEGA VEGABAR 81 4 … 20 mA_HART - Operating Instructions - Manual (Page 17)

17
4 Mounting
VEGABAR 81 • 4 … 20 mA/HART
45018-EN-131010
1
Fig. 8: Position of the filter element - IP 69K version
1 Filter element
Instruments with absolute pressure have a blind plug mounted
instead of the filter element.
4.3 Process pressure measurement
Keep the following in mind when setting up the measuring system:
•
Mount the instrument above the measuring point
Possible condensation can then drain off into the process line.
1
2
3
Fig. 9: Measurement setup for process pressure measurement of gases in
pipelines
1 VEGABAR 81
2 Blocking valve
3 Pipeline
Keep the following in mind when setting up the measuring system:
•
Connect via a siphon
•
Do not insulate the siphon
•
Fill the siphon with water before setup
Measurement setup in
gases
Measurement setup in
vapours