There are many types of pressure-related instrumentation, and today we will learn about the difference between pressure transmitters and pressure relays. Pressure Transmitters – Pressure transmitter is the most commonly used type of transmitter in industrial practice, the pressure transmitter is to diffuse a Wheatstone bridge on a monocrystalline silicon wafer, when the felt gas, liquid physical pressure is pressurized, the resistance value of the bridge wall changes, a differential voltage signal is generated, and finally this signal is converted into a standard analog signal or digital signal. According to the measurement function, the pressure transmitter can be divided into general-purpose pressure transmitter, explosion-proof pressure transmitter, waterproof pressure transmitter, impact-resistant pressure transmitter, high-protection pressure transmitter, flat membrane pressure transmitter, sanitary pressure transmitter, intelligent pressure transmitter, non-type pressure transmitter, etc. Pressure transmitters are used to measure liquids or gases equal to contact with a compatible medium. It can measure gauge pressure, absolute pressure, and negative pressure. The output mode of the pressure transmitter can be selected as current type, voltage type or RS485 output signal. The pressure transmitter also has a precision grade, which has a direct impact on the quality and price of the pressure transmitter, the higher the accuracy of the pressure transmitter selected by the customer, the more expensive the price. For pressure transmitters with an accuracy of class 0.1, the allowable error of output = output range * 0.1% Pressure Relays – The pressure relay is an element in the hydraulic system that makes the electrical contact act when the fluid pressure reaches a predetermined value. The pressure relay can also be defined as a hydraulic component that converts the pressure into an electrical signal, and the customer can output an electrical signal at a certain set pressure by adjusting the pressure relay according to their own pressure design needs. There are four structural forms of pressure relays: plunger type, diaphragm type, spring tube type and bellows type. Main applications: for safety protection, control of the sequential action of actuators, for the opening and closing of pumps, for unloading of pumps. Star Meter Technology Co., Ltd. is a high-tech enterprise integrating R&D, production and sales. Specializing in the production of pressure transmitters, liquid level transmitters, temperature transmitters, temperature and humidity transmitters, differential pressure transmitters, soil moisture transmitters, 3051 transmitters and related instrumentation accessories. A number of products under the Xingyi brand have obtained a number of patent certificates issued by the state, such as CE certification, IS9001 certification, SGS certification, TüV SüD certification, explosion-proof certification, etc. If you have any questions about product consultation, product customization, agency, technical inquiry, quotation, etc., please contact Xingyi: 400-600-4496!