What are the common faults of pressure sensors?

There are mainly the following faults that are prone to occur in pressure sensors:
The first is that the pressure goes up, but the transmitter output cannot go up. In this case, first check whether the pressure interface is leaking or blocked. If it is confirmed that it is not, check the wiring method and check the power supply. If the power supply is normal, simply pressurize to see if the output changes, or check whether the sensor zero position has output. If there is no change, the sensor is damaged, which may be a problem with the instrument or other links of the entire system.
The second is that the output of the pressurized transmitter does not change, and the output of the pressurized transmitter suddenly changes again, and the zero position of the pressure relief transmitter cannot return. It is very likely that there is a problem with the sealing ring of the pressure sensor. The common reason is that due to the specifications of the sealing ring, the sealing ring is compressed into the pressure inlet of the sensor after the sensor is tightened, blocking the sensor. The pressure medium cannot enter when pressurized, but the sealing ring is suddenly opened when the pressure is high, and the pressure sensor changes under pressure. The best way to eliminate this fault is to remove the sensor and directly check whether the zero position is normal. If the zero position is normal, replace the sealing ring and try again.
The third is that the output signal of the transmitter is unstable. This kind of fault may be caused by the pressure source. The pressure source itself is an unstable pressure. It is very likely that the instrument or pressure sensor has poor anti-interference ability, the sensor itself vibrates violently, and the sensor fails; the fourth is that the transmitter has a large deviation from the pointer pressure gauge. Deviation is a normal phenomenon. Just confirm the normal deviation range.
The last common fault is the influence of the installation position of the micro differential pressure transmitter on the zero output. Since the micro differential pressure transmitter has a very small measurement range, the sensor element in the transmitter will affect the output of the micro differential pressure transmitter. When installing, the pressure sensitive part of the transmitter should be axially perpendicular to the direction of gravity. After installation and fixing, adjust the zero position of the transmitter to the standard value.