2-32
Chapter 2 Installation of this Device
(2) Pressure Measurement Piping
(i) Recommended piping example
A typical pressure measurement piping example is illustrated below.
Be sure to implement the following items.
• Depending on the measured fluid, create an incline in the differential pressure output pipes
so that drains, vents, etc., will clear.
Meaning of incline symbol
in the diagram:
Low position
High position
• Install gas vent plugs at locations where gas in connecting pipes exits.
• After doing the piping work, confirm that there are no pressure leaks in the connecting pipes,
the three-way manifold valve, the transmitter, etc.
• For the purpose of connecting pipe maintenance, use T-joints to attach drain valves.
Process Pipe
Process Pipe
Master Valve
Master Valve
Open to
Atmosphere
JTD Model
Transmitter
JTG/JTA Model
Transmitter
Gas Vent Plug
Gas Vent Plug
Gas Vent Plugs
Gas Vent Plug
Drain Valve
Drain Valve
Manual Master Valve
T-Joint
T-Joint
Manual Master Valve
Figure 2-38. Gas Pressure Measurement Piping
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