24
4 Mounting
WIKA Operating Instructions - Differential pressure transmitter DPT-20
1
2
3
3
6
5
4
4
Fig. 21: Measurement setup with differential pressure measurement between a
vapour and a condensate cable
1 Vapour cable
2 Condensate cable
3 Blocking valves
4 Condensate vessels
5 5-fold valve block
6 DPT-20
•
Mount device below the measurement loop so that the effective
pressure lines are always filled with liquid and gas bubbles can
bubble up to the process line
•
For measurement in products with solid content, such as e.g. dirty
liquids, the installation of separators and drain valves is recom
-
mended. Debris and sediment can thus be collected and removed.
+
–
1
2
4
5
6
3
4
5
2
Fig. 22: Measurement setup with differential pressure measurement in liquids
1 e.g. filter
2 Blocking valves
3 3-fold valve block
4 Precipitator
5 Drain valves
6 DPT-20
•
Mount chemical seal with capillaries on top or laterally on the
pipeline
In liquids
When chemical seal
systems are used in all
products
