60
8 Setup
WIKA Operating Instructions - Differential pressure transmitter DPT-10
A
B
+
1
5
6
7
+
–
2
4
3
II
I
III
III
Fig. 47: Preferred measurement setup for liquids
I DPT10
II 3-fold valve block
III Precipitator
1, 5 Drain valves
2, 4 Inlet valves
3 Breather valve
6, 7 Vent valves on DPT10
A, B Blocking valves
Proceed as follows:
1. Close valve 3
2. Fill measuring system with medium.
For this purpose, open valves A, B (if available) as well as 2, 4:
Medium flows in
If necessary, clean the differential pressure lines: - with gases by
blowing out with compressed air - with liquids by rinsing.
4)
For this purpose close valve 2 and 4, i.e. block the instrument.
Then open valve 1 and 5 so that the effective pressure lines blow
out/rinse.
Close valves 1 and 5 (if available) after cleaning
3. Remove air from instrument:
Open valves 2 and 4: Medium flows in
Close valve 4: Low pressure side is closed
Open valve 3: Equalisation high and low pressure side
Briefly open valve 6 and 7, then close again: Fill the measuring
instrument completely with the medium and remove air
4. Carry out a position correction if the following conditions apply. If
the conditions are not fulfilled, then carry out the position correc-
tion after step 6.
Conditions:
Liquids
4)
Arrangement with 5 valves.
