In the process of using a pressure transmitter, a power supply is required to supply it. Usually, the voltage we use in daily life is 220V alternating current (AC). For a pressure transmitter, it needs to continuously output a stable signal. Direct current (DC) is stable in direction and size and will not change over time, while AC is the opposite. This is why most pressure transmitters use direct current. Choosing the wrong power supply voltage for the pressure transmitter can damage the circuit board of the pressure transmitter, which is also one of the main reasons for the failure of the pressure transmitter. The amount of power supply voltage used is an important issue for pressure transmitters. The conventional power supply voltage of the pressure transmitter is 12-36V DC, and using this range of power supply voltage can effectively avoid damage caused by excessive voltage. Choosing this range of power supply voltage is also more in line with mainstream equipment, making it convenient for the pressure transmitter to connect and combine with other equipment systems. Traditionally, 24V DC power supply voltage is commonly used in pressure transmitters, and it can meet most transmission and load requirements (with 250 Ω) × Two loads and a transmission distance of 1KM), with high waste and low application limitations. Of course, if necessary, the power supply voltage can be completely changed. It is worth noting that there are some special situations with the power supply voltage of the pressure transmitter. Scenario 1: The pressure transmitter uses a gauge head with a display, so it is best to choose a power supply voltage of 15-36V DC, as the gauge head of the pressure transmitter also requires a certain supply. Scenario 2: If our pressure transmitter outputs a signal of 0.5-2.5V DC or uses RS485 output signal, the power supply voltage of the pressure transmitter should be customized to 3-5V DC. Scenario 3: If we use an explosion-proof pressure transmitter with intrinsic safety or dust intrinsic safety, the power supply voltage of the pressure transmitter needs to use an intrinsic safety power supply of 24V DC. If you have any questions regarding product consultation, product customization, agency, technical inquiries, quotations, etc., please contact Xingyi at 400-600-4496!