Installation Recommendations; Steam Or Clean Liquids Flow Measurement; Gas Or Liquid Flow Measurement - ABB 266FF Operating Instructions Manual

5.13 Installation recommendations

Impulse piping configuration depends on the specific
measurement application.
5.13.1 Steam (condensable vapor) or clean liquids flow
measurement
— Place taps to the side of the line.
— Mount beside or below the taps.
— Mount the drain/vent valve upward.
— In case of steam application fill the vertical section of the
connecting lines with a compatible fluid through the filling
tees.
The process fluid must enter the transmitter primary:
1. Open equalizing valve (C)
2. Close low pressure (B) and high pressure (A) valves .
3. Open gate valves
4. Slowly open high pressure (A) valve to admit process fluid
to both sides of primary.
5. Vent or drain the primary unit and then close the valves.
6. Open the (B) valve and close the equalizing valve.
Figure 28: Steam or clean liquid flow measurement
(transmitter and manifold)
5.13.2 Gas or liquid (with solids in suspension) flow
measurement
— Place the taps to the top or side of the line.
— Mount the transmitter above the taps.
The process fluid must enter the transmitter primary:
1. Open equalizing valve (C)
2. Close low pressure (B) and high pressure (A) valves .
3. Open gate valves
4. Slowly open high pressure (A) valve to admit process fluid
to both sides of primary.
5. Vent or drain the primary unit and then close the valves.
6. Open the (B) valve and close the equalizing valve.
Figure 29: Gas or liquid flow measurement (transmitter and manifold)
2600T Series Pressure transmitters | OI/266/FF-EN Rev. B 25
5 Mounting