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Appendix D Additional mounting examples
266 MODBUS® multivariable transmitter User manual 2105216 Rev. AB
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Appendix D
Additional mounting examples
Process piping configuration depends on the specific measurement application. The following are some examples of the various
applications available.
D.1
Steam or clean liquids flow measurement
The installation guidelines for steam (condensable vapor) or clean liquids flow measurement are:
1.
Place taps to the side of the line.
2.
Mount the transmitter beside or below the taps.
3.
Mount the drain or vent valve upward.
4.
Fill the vertical section of the connecting lines with a compatible fluid through the filling tees.
5.
Commission the transmitter.
a.
Open the equalizing valve (C) (Figure 55).
b.
Close the low pressure (B) and high pressure (A) valves.
c.
Open the gate valves (items HG and LG)
d.
Slowly open the high pressure (A) valve to admit process fluid to both sides of the primary.
e.
Vent or drain the primary unit and then close the gate valves (items HG and LG).
f.
Open the low pressure valve (B) and close the equalizing valve (C).
HG
LG
Figure legend:
A = High pressure valve (H = high pressure line)
B = Low pressure valve (L = low pressure line)
C = Equalizing valve
HG = High pressure gate valve
LG = Low pressure gate valve
Figure 55: Steam or clean liquid flow measurement (transmitter and manifold)
Содержание 266 MODBUS
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