1. During installation, the pressure sensitive part of the transmitter should be axially perpendicular to the direction of gravity. If the installation conditions are limited, the zero position of the transmitter should be adjusted to the standard value after installation and fixation.
2. The residual pressure cannot be released, so the zero position of the sensor cannot be lowered. The best way to eliminate this reason is to remove the sensor and directly check whether the zero position is normal. If it is normal, replace the sealing ring and try again.
3. The output of the pressurized transmitter does not change, and the output of the pressurized transmitter suddenly changes again, and the zero position of the pressure relief transmitter cannot return. The cause of this phenomenon is most likely caused by the sealing ring of the pressure sensor.
4. Whether it meets the power supply requirements; whether there is any wiring error between the power supply and the transmitter and the load equipment. If there is no voltage on the transmitter terminal or the polarity is reversed, the transmitter will have no voltage signal output.
5. The housing of the pressure sensor and transmitter generally needs to be grounded, the signal cable must not be laid together with the power cable, and strong electromagnetic interference should be avoided around the sensor and transmitter. Sensors and transmitters should be periodically calibrated according to industry regulations during use.
6. When selecting pressure sensors and transmitters, users should fully understand the working conditions of the pressure measurement system and make reasonable choices according to needs to make the system work in the best state and reduce the project cost.
7. The filling liquid in the isolation sheet and the element is transmitted to both sides of the measuring diaphragm. The electrodes on the measuring diaphragm and the insulating sheets on both sides each form a capacitor.
8. The pressure transmitter requires weekly inspection and monthly inspection, mainly to remove dust in the instrument, carefully check the electrical components, and frequently calibrate the output current value. The pressure transmitter has weak electricity inside and must be isolated from the strong electricity outside.