Sick Sensors – Common faults in pressure sensors

Create Date: 2024-8-30 12:03:23|Source: SICK/Sick

One. The pressure can go up, but the transmitter output can't go up

In this case, you should first check whether there is a leak in the pressure interface or it may be blocked, if it is confirmed, then check whether there is a mistake in the wiring method and check the power supply, if the power supply is normal, you should simply pressurize to see if the output has changed, or check whether the zero position of the sensor has an output, if it has not changed, the sensor has been damaged, otherwise it is the appearance of damage or other links of the whole system.

Two. Problems with pressure sensor seals

The first pressurization, the transmitter output does not change, and the output of the pressurized transmitter suddenly changes, and the transmitter zero position cannot be returned after the pressure is relieved, which is likely to be a problem with the pressure sensor sealing ring. It is common for the seal to be tightened and compressed into the sensor implet due to the size of the seal, which can block the sensor. When pressurized, the pressure medium cannot enter, but when the pressure is high, the sealing ring is suddenly opened, and the pressure sensor is changed by pressure. The best way to troubleshoot this fault is to remove the sensor and directly check whether the zero position is normal, and if the zero position is normal, you can replace the sealing ring and try again.

Three. The output signal of the transmitter is unstable

This malfunction can certainly be a problem with the stressor. The pressure source itself is an unstable pressure, and it is likely that the anti-interference ability of the appearance or pressure sensor is not strong, the sensor itself vibrates very strongly, or the sensor has been damaged.

Four. The error of the transmitter compared to the pointer pressure gauge is large

It is normal for this error to occur, and it is sufficient to confirm the normal error range; The last type of failure that is prone to occur is the effect of the device orientation of the differential pressure transmitter on the zero output. Because of the small measuring range of the differential pressure transmitter, the sensing element in the transmitter affects the output of the differential pressure transmitter. When installing, the pressure sensor of the transmitter should be axial 90 degrees perpendicular to the direction of gravity, and remember to adjust the zero position of the transmitter to the standard value after the device is fixed.

Sick Sensors – Common faults in pressure sensors

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