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266CRH / 266CRT, 266CSH / 266CST MULTIVARIABLE PRESSURE TRANSMITTER | OI/266CXX/MODBUS-EN REV. A
... 6 Installation
... Mounting recommendations
To commission the transmitter, operate the valves in the
following sequence:
1. Open the equalizing valve.
2. Close the low pressure valve and high pressure valve.
3. Open the primary shutoff valves.
4. Slowly open the high pressure valve so that the
measuring medium can flow into the measuring cell on
both sides.
5. Vent or drain the measuring cell and close the valves.
6. Open the low pressure valve and close the equalizing
valve.
Flow measurement of gas or liquid with solids in
suspension
H
L
3
1
2
1
3
2
H High pressure side
L Low pressure side
1 High-pressure valve
Figure 19: Flow measurement of gases or liquids
•
Place taps above or to the side of the line.
•
Mount the transmitter above the taps.
To commission the transmitter, operate the valves in the
following sequence:
1. Open the equalizing valve.
2. Close the low pressure valve and high pressure valve.
3. Open the primary shutoff valves.
4. Slowly open the high pressure valve so that the
measuring medium can flow into the measuring cell on
both sides.
5. Vent or drain the measuring cell and close the valves.
6. Open the low pressure valve and close the equalizing
valve.
H
L
M10764-01
2 Low pressure valve
3 Equalizing valve
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