The accuracy of the pressure sensor measurement depends largely on the correct installation of the sensor, the measuring tube and the pressure extraction components. The selection of the pressure point of the pressure sensor should follow the following rules:
First, when the pressure sensor measures the gas pressure, the pressure point should be in the upper half of the process pipeline.
Second, when the pressure sensor measures the liquid pressure and vapor pressure, the pressure point should be within the range of 0°~45° between the lower half of the process pipeline and the horizontal centerline of the process pipeline.
Third, the pressure point of the pressure sensor should be selected in the pipe section with stable flow rate of the process medium.
Fourth, when the pressure point and the temperature point are on the same pipeline, the pressure point should be installed on the upstream side of the temperature point.
Fifth, the end of the pressure point should not exceed the inner wall of the process equipment and process pipeline.
Sixth, when measuring the pressure of turbid media such as dust, solid particles or sediments on the vertical process pipeline, the pressure point should be installed obliquely upward, and the angle between the pressure point and the horizontal line should be greater than 30 degrees, and the horizontal process pipeline should be installed at an acute angle along the flow beam.
Seventh, the installation position of the pressure sensor should be well-lit, easy to operate and maintain, and should not be installed in places with vibration, humidity, high temperature, corrosive and strong magnetic field interference.
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