A pressure transmitter is a commonly used type of transmitter. It has the advantages of high precision, good stability, fast response speed, strong anti-interference ability, small structure and easy installation. The circuit of the pressure transmitter is an important part of the whole instrument, and the normal circuit affects the working state of the pressure transmitter. How do we check the circuit of a pressure transmitter? Situation 1: Turn on the pressure transmitter, and check the status of the voltage signal at the output when the pressure transmitter inputs the pressure signal. If there is no output voltage, you should first check whether the power supply voltage is normal, whether it meets the power supply requirements, and whether there is any wiring error between the power supply and the pressure transmitter and the load equipment. If there is no voltage on the pressure transmitter terminal or the polarity is reversed, the transmitter will have no voltage signal output. Whether there is any poor contact phenomenon of circuit board connector, the method of comparing the measurement voltage of the normal instrument with the corresponding measurement voltage of the fault instrument can be adopted to determine the fault point. If necessary, the faulty amplifier board can be replaced. Situation 2: After the power is turned on, if the output of the pressure transmitter is too high or too low after the input pressure signal is given, and the output does not respond when the input pressure signal is changed and the zero point and range screw are adjusted. For this kind of fault, in addition to checking whether there is any abnormality in the sensitive parts of the pressure transmitter measurement part, it is necessary to check whether the “oscillation control circuit part” on the pressure transmitter amplifier board is working properly. Secondly, check the working status of each operational amplifier on the amplifier board; Whether there is any damage to the components of each part, etc. Such failures require the amplifier board to be replaced. If you have any questions about product consultation, product customization, agency, technical inquiry, quotation, etc., please contact Xingyi: 400-600-4496!