Temperature transmitters can be divided into two types, thermocouple or RTD, according to the different temperature sensing elements. Thermocouples are generally used for medium and high temperature measurements, thermocouple temperature measurement is the basic principle of two different materials of conductors or semiconductors a and b welded together to form a closed loop. When the conductor a and b of the two clinging point 1 and 2 temperature difference between the two will produce electric potential, and thus the formation of a size of the current in the loop, this phenomenon is known as the thermoelectric effect. Thermocouple is to use this effect to work. RTD is one of the most commonly used temperature detectors in low and medium temperature regions. Its main features are high measurement accuracy and stable performance. Among them, platinum heat is resistance measurement accuracy is high, it is not only widely used in industrial temperature measurement, and is made into a standard reference instrument. The principle of temperature measurement by RTD is based on the property that the resistance value of metal conductor increases with the increase of temperature for temperature measurement. Most of the RTDs are made of pure metal materials, and the most widely used are platinum and copper, in addition, nickel, manganese and rhodium have now begun to be used in the manufacture of RTDs. Temperature transmitter its application is also very wide, in the petroleum, chemical, chemical fiber textile, rubber, electric power, metallurgy, medicine, food and other industrial fields on-site need to measure the temperature process control. Temperature transmitter also has anti-interference is the ability to strong, easy to install, precision and other characteristics. For product consultation, product customization, agency, technical inquiries, quotations and any other questions, please contact Star sensor hotline: 400-600-4496 !