Transmitter's common fault

1. When installing, the pressure sensitive part of the transmitter shall be perpendicular to the direction of gravity. If the installation conditions are limited, the transmitter shall be adjusted to zero to the standard value.

2. The residual pressure is not released, so the sensor's zero position will not come back. The best way to eliminate this reason is to remove the sensor and see if the zero position is normal. If the seal is replaced normally, try again.

3, pressure transmitter output does not change, and then pressurize the transmitter output suddenly changes, pressure transmitter zero can not go back. The cause of this phenomenon is most likely caused by the pressure sensor seal.

4. Whether it meets the power supply requirements; there is no wiring error between the power supply and the transmitter and load device. No voltage or reversed polarity on the transmitter terminals can cause the transmitter to output no voltage signal.

5, pressure sensor and transmitter housing generally need to be grounded, signal cable must not be mixed with the power cable laying, sensors and transmitters should avoid strong electromagnetic interference around.

6. When selecting pressure sensors and transmitters, the user should fully understand the working conditions of the pressure measurement system and make reasonable choices according to their needs so that the system can work in the best condition and reduce the project cost.

7. Transfer to the two sides of the measuring diaphragm through the spacer and the filling liquid in the element. Measure the diaphragm and the electrodes on both sides of the insulating sheet to form a capacitor.

8, pressure transmitter requires inspection once a week, once a month inspection, mainly to remove the dust inside the instrument, a serious inspection of electrical components, the current value of the output should be always proofread, the pressure transmitter is weak inside, certain To be separated from the outside world by strong electricity.