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

Deviation is a normal phenomenon, and it is enough to confirm the normal deviation range. The last easy fault is the influence of the installation position of the micro differential pressure transmitter on the zero output. Due to the small measurement range of the micro-differential pressure transmitter, the sensor element in the transmitter will affect the output of the micro-differential pressure transmitter. During installation, the axial direction of the pressure sensitive part of the transmitter shall be perpendicular to the direction of gravity. After installation and fixation, the zero position of the transmitter shall be adjusted to the standard value.

In this case, first check whether the pressure interface is leaking or blocked. If not, check the wiring mode and power supply. If the power supply is normal, simply pressurize to see if the output changes, or check if the zero position of the sensor has output. If there is no change, the sensor is damaged, which may be the instrument damage or other links of the whole system;

The output of the pressurized transmitter does not change, the output of the re-pressurized transmitter changes suddenly, and the zero position of the pressure relief transmitter cannot be returned, which is likely to be the problem of the pressure sensor sealing ring. It is common that due to the specifications of the sealing ring, after the sensor is tightened, the sealing ring is compressed into the sensor pressure port to block the sensor. The pressure medium cannot enter during pressure, but the sealing ring is suddenly opened when the pressure is high, and the pressure sensor is under pressure. change. The best way to eliminate this kind of 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;

This kind of deviation is a normal phenomenon, and it is enough to confirm the normal deviation range. The last easy fault is the influence of the installation position of the micro differential pressure transmitter on the zero output. Due to the small measurement range of the micro-differential pressure transmitter, the sensor element in the transmitter will affect the output of the micro-differential pressure transmitter. During installation, the pressure sensitive parts of the transmitter shall be axially 90 degrees perpendicular to the direction of gravity. After installation and fixation, remember to adjust the zero position of the transmitter to the standard value.

The pressure sensor may be contaminated by the ambient environment or the measured working fluid. Contamination does affect the accuracy of pressure sensors, which is why it is important to clean them regularly.

The pressure sensor is serviceable. But very well left to the experts. DIY repair work does not apply to pressure sensors. The strain gauge or pressure crystal within the sensor is very sensitive to external forces. Therefore, they need professional tools and experienced professionals.

Pressure sensors and pressure switches have similarities in that both devices can measure pressure. However, the difference is that the pressure switch has an additional function. When the pressure becomes higher or lower than a certain limit,

The vacuum pressure sensor is an instrument that can measure the vacuum pressure signal and convert it into a standard electrical signal (such as 4-20mA, 0-5V, etc.). It is usually used to accurately monitor and control the pressure in a high vacuum closed system. The measurement range is usually from below atmospheric pressure to a specific low pressure value. Widely used in chemical, pharmaceutical, food processing and other industries as well as research and experiment of vacuum acquisition and control system.

Pressure transmitters do measure vacuum. Pressure transmitters designed for measuring vacuum can measure pressure levels below atmospheric pressure and are commonly referred to as vacuum pressure sensors.