22
4 Mounting
WIKA Operating Instructions - Differential pressure transmitter DPT-20
•
Mount the instrument below the measuring point
•
Mount condensate vessels at the same height with the discharge
socket and at the same distance to the device
•
Fill the effective pressure lines to the height of the condensate
vessels before setup
+
–
1
2
3
3
5
5
6
4
Fig. 18: Measurement setup, flow measurement in vapours
1 Condensate vessels
2 Orifice or impact pressure probe
3 Blocking valves
4 3-fold valve block
5 Drain or blow-off valves
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 measurements in products with solid content such as e.g. dirty
liquids, the installation of separators and drain valves is recom
-
mended to enable collection and removal of debris and sediment.
•
Fill the effective pressure lines to the height of the condensate
vessels before setup
In vapours
In liquids
