What should be considered when use differential pressure transmitters?-2

- Oct 30, 2019-

Precautions for differential pressure transmitters in daily use:

1: Do not apply supply voltage higher than 36V to the transmitter, resulting in damage to the differential pressure transmitter;

2: Do not touch the diaphragm with a hard object, resulting in damage to the isolation diaphragm of the pressure transmitter;

3: The measured medium is not allowed to freeze, otherwise the sensor element and the isolation diaphragm will be damaged, resulting in damage to the pressure transmitter. If necessary, the transmitter should be temperature-protected to prevent freezing.

4: When measuring steam or other high temperature media, the media temperature should not exceed the limit temperature when the transmitter is used. Above the limit temperature used by the transmitter, a heat sink must be used;

5: When measuring steam or other high temperature media, use a heat pipe to connect the pressure transmitter to the pipe and use the pressure on the pipe to transfer it to the transformer. When the measured medium is water vapor, an appropriate amount of water should be injected into the heat pipe to prevent the superheated steam from directly contacting the transmitter and damaging the sensor;

6: During the pressure transmission process, the following points should be noted.

a.Do not leak at connection between the differential pressure transmitter and the heat pipe;

b.Before starting to use, if the valve is closed, the valve should be opened very carefully and slowly, so as to prevent the measured medium from directly impacting the sensor diaphragm and damaging the sensor diaphragm;

c.The pipeline must be kept clear, otherwise the deposits in the pipeline will pop upto damage the sensor diaphragm.