Deltabar S FOUNDATION Fieldbus Commissioning
Endress+Hauser 49
• PMD75: before calibrating the device, the pressure piping must be cleaned and filled with
fluid. See the following table.
Valves Meaning Preferred installation
1 Close 3.
P01-xMD7xxxx-11-xx-xx-xx-002
Fig. 16: Above: preferred installation for gases
Below: preferred installation for liquids
I Deltabar S PMD75
II Three-way valve manifold
III Separator
1, 5 Drain valves
2, 4 Inlet valves
3 Equalizing valve
6, 7 Vent valves on Deltabar S
A, B Shutoff valve
2 Fill measuring system with fluid.
Open A, B, 2, 4. Fluid flows in.
3 Clean pressure piping if necessary:
1)
– by blowing out with compressed air in the case of
gases
– by rinsing out in the case of liquids.
1) For arrangement with 5 valves
Close 2 and 4. Block off device.
Open 1 and 5.
Blow out/rinse out
pressure piping.
Close 1 and 5.
Close valves after cleaning.
4Vent device.
Open 2 and 4. Introduce fluid.
Close 4. Close negative side.
Open 3. Balance positive and
negative side.
Open 6 and 7 briefly, then
close them again.
Fill device completely with
fluid and remove air.
5 Set measuring point to operation.
Close 3. Shut off positive side from
negative side.
Open 4. Connect negative side.
Now
–1
, 3, 5
, 6 and 7 are closed.
– 2 and 4 are open.
– A and B are open (if present).
6 Carry out calibration if necessary. ä 50,
Section 7.8.2.
I
II
+–
–+
6
6
7
7
–+
3
2 4
A B
A
B
+
1
5
2 4
3
II
I
IIIIII
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