Pressure sensor for Cummins Volvo engine parts 4921473

What are the fault problems of the pressure sensor?

1. Achievements of pressure sensor sealing ring

The input of pressure transmitter does not change, and then the input of pressure transmitter suddenly changes, and the zero position of pressure transmitter can't go back, which is probably the result of the sealing ring of pressure sensor. It is rare that the sealing ring is compressed to the outside of the sensor pressure inlet after the sensor is tightened, and the pressure medium can't enter when it is pressurized, but when the pressure is high, the sealing ring is suddenly pushed open and the pressure sensor is changed. A good way to eliminate this kind of problem is to remove the sensor and indirectly observe whether the zero position is abnormal. If it is zero,

2. The comparison error between transmitter and pointer pressure gauge is large.

The presentation error is a sign of abnormality, so it is enough to confirm the error scale of abnormality; Finally, an easy-to-present fault is the influence of the position of the micro-differential pressure transmitter on the zero input. Because of its small measurement scale, the sensor elements in the micro-differential pressure transmitter will affect the input of the micro-differential pressure transmitter. When installing, the pressure sensor of the transmitter should be biased vertically to gravity, and the zero position of the transmitter should be adjusted to the standard value after the device is firm.

3, pressure down, the transmitter input couldn't get on.

In this environment, we should first reflect on whether the pressure interface can leak or be blocked. If it is not, we should reflect on the wiring method and power supply. If the power supply is abnormal, we should stop briefly pressurizing to see if the input can be changed. Maybe we should observe whether the zero position of the sensor can have input. If there is no change, the sensor has been destroyed, which can be the instrument destruction or the rest of the key achievements of the whole system.

4. The input signal of the transmitter is unstable

This kind of fault is the result 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 sensor itself vibrates fiercely and the sensor is faulty;