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Figure 3
7.2.2 The gasket shall not protrude into the inside of the pipe after clamping.
8 Requirements for the Use of Integral Orifice Plate
8.1 The fluid must be filled with round pipes and throttling devices, and flow through the pipes
continuously.
8.2 The fluid must be a Newtonian fluid, which is homogeneous, single-phase in physics and
thermodynamics, or can be considered single-phase; including gas, liquid and steam, etc.
8.3 No phase change occurs when the fluid flows through the flow element.
8.4 The fluid flow rate does not change with time, or changes slowly.
8.5 Before the fluid flows through the flow element, its stream must be parallel to the axis of the
pipeline, and there must be no rotating flow.
8.6 The standard flow element is not suitable for flow measurement of pulsating flow and critical
flow.
9 Fault Analysis and Troubleshooting
Failure Phenomenon
Reason
Method
Differential pressure
transmitter indicates no
change
1. Stop valve is not opened
Open the stop valve
2.
Differential
pressure
transmitter failure
Check
differential
pressure
transmitter
The indication value of
the differential pressure
transmitter obviously
deviates from the
1. The installation direction of
the flow element is wrong
Reinstall flow element
2.
Differential
pressure
transmitter failure
Check
differential
pressure
transmitter
