Pressure calibrator pressure sensor prone to failure mainly in the following categories: The first is the pressure up, the transmitter can not go up. In this case, check whether the pressure interface is leaking or blocked. If it is not, check the wiring mode and check the power supply. If the power supply is normal, simply pressurize to see if the output changes, or if the sensor zero point is output. If there is no change, the sensor is damaged, which may be the damage of the instrument or other problems in the whole system;
The second is the pressure transmitter output does not change, and then pressurize the transmitter output suddenly changes, the pressure transmitter zero can not go back, most likely the pressure sensor seal problem. Commonly due to the sealing ring specification, after the sensor is tightened, the sealing ring is compressed to the inside of the sensor pressure inlet to block the sensor. When the pressure is applied, the pressure medium cannot enter, but when the pressure is high, the sealing ring is suddenly opened and the pressure sensor is under pressure. Variety. The best way to eliminate this kind of failure is to remove the sensor and check if the zero position is normal. If the zero position is normal, replace the seal and try again.
The third is the transmitter output signal instability. This failure has the problem of being a source of stress. The pressure source itself is an unstable pressure. It is very likely that the instrument or pressure sensor is not strong in anti-interference ability, the sensor itself is very vibrating, and the sensor is malfunctioning;
The fourth is that the transmitter has a large deviation from the analog pressure gauge. Deviation is a normal phenomenon, and the normal deviation range can be confirmed; the last kind of failure that easily occurs is the influence of the installation position of the differential pressure transmitter on the zero output. Micro Differential Pressure Transmitter Since the measurement range is very small, the sensor components in the transmitter will affect the output of the micro differential pressure transmitter. When installing, the pressure sensitive part of the transmitter should be perpendicular to the direction of gravity. After installation, adjust the transmitter zero to the standard value.
The second is the pressure transmitter output does not change, and then pressurize the transmitter output suddenly changes, the pressure transmitter zero can not go back, most likely the pressure sensor seal problem. Commonly due to the sealing ring specification, after the sensor is tightened, the sealing ring is compressed to the inside of the sensor pressure inlet to block the sensor. When the pressure is applied, the pressure medium cannot enter, but when the pressure is high, the sealing ring is suddenly opened and the pressure sensor is under pressure. Variety. The best way to eliminate this kind of failure is to remove the sensor and check if the zero position is normal. If the zero position is normal, replace the seal and try again.
The third is the transmitter output signal instability. This failure has the problem of being a source of stress. The pressure source itself is an unstable pressure. It is very likely that the instrument or pressure sensor is not strong in anti-interference ability, the sensor itself is very vibrating, and the sensor is malfunctioning;
The fourth is that the transmitter has a large deviation from the analog pressure gauge. Deviation is a normal phenomenon, and the normal deviation range can be confirmed; the last kind of failure that easily occurs is the influence of the installation position of the differential pressure transmitter on the zero output. Micro Differential Pressure Transmitter Since the measurement range is very small, the sensor components in the transmitter will affect the output of the micro differential pressure transmitter. When installing, the pressure sensitive part of the transmitter should be perpendicular to the direction of gravity. After installation, adjust the transmitter zero to the standard value.
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