1: When measuring steam or other high temperature media, the heat pipe should be used to connect the sensor and the pipeline together, and the pressure on the pipeline is transmitted to the change and start to use, if the valve is closed, the valve should be opened very carefully and slowly when used, so as to avoid the measured medium directly impacting the sensor diaphragm, thus damaging the sensor diaphragm;
2: Do not touch the diaphragm with hard objects, resulting in damage to the isolation diaphragm;
3: The measured medium is not allowed to freeze, otherwise it will damage the sensor element isolation diaphragm, resulting in sensor damage, if necessary, the sensor should be temperature protection to prevent icing;
4: When measuring steam or other high temperature media, the temperature should not exceed the limit temperature when the sensor is used, higher than the limit temperature used by the pressure sensor must use the heat dissipation device;
6. The output signal of the transmitter is unstable

This kind of failure may be the problem of the pressure source. The pressure source itself is an unstable pressure, and it is likely that the anti-interference ability of the instrument or pressure sensor is not strong, the vibration of the sensor itself is very severe and the sensor is faulty.

7. Large deviation between transmitter and pointer pressure gauge

Deviation is a normal phenomenon, confirm the normal deviation range; The last kind of fault that is prone to occur is the effect of the mounting position of the differential pressure transmitter on the zero output. Differential pressure transmitter Because of its small measuring range, the sensor element in the transmitter will affect the output of the differential pressure transmitter. When installing, the pressure sensitive part of the transmitter should be axial perpendicular to the direction of gravity, and adjust the zero position of the transmitter to the standard value after installation.