Temperature sensor (temperature transducer) means able to feel the temperature and converted into a usable output signal of the sensor. Temperature sensor is a core part of the temperature measuring instruments, and variety. Press the measurement can be divided into contact and non-contact two categories, according to the characteristics of the sensor material and electronic components are divided into two types of RTD and thermocouple. The main part of the measured object detection and classification contact temperature sensor has good contact temperature sensor models, also known as the thermometer. Thermometer by conduction or convection thermal equilibrium temperature sensor, so that shows the value of the thermometer indicates the temperature can be directly measured object. Generally the higher measurement accuracy. Within a certain temperature range temperature sensor manufacturers, the thermometer to measure the temperature distribution inside the object. But for the moving body, the heat capacity of the small target or a small object will have a greater measurement error, commonly used in thermometers bimetal thermometer, glass liquid thermometer, pressure thermometer, resistance thermometers, thermistors, and thermocouples and so on. They are widely used in industry, agriculture, commerce and other departments. In daily life, people often use these thermometers. As research in defense projects cryogenic technology, space technology, metallurgy, electronics, food, pharmaceutical and petrochemical sectors and the wider use of superconducting technology to measure the temperature of the low-temperature thermometer below 120K has been developed, such as low temperature gas thermometer, steam pressure thermometer, acoustic thermometer, thermometer paramagnetic salts, quantum thermometer, low thermal resistance and low-temperature thermocouple and so on. Require cryogenic thermometer temperature sensing element is small, high accuracy, reproducibility and stability. The use of porous high silica glass carburizing sintered glass carburizing low thermal resistance thermometer is a temperature sensing element, can be used to measure the temperature within the range of 1.6 ~ 300K. Working principle of the design principle of metal expansion metal sensor after ambient temperature change will produce a corresponding extension of the temperature sensor applications, and therefore the sensor can be reacted in different ways to this signal conversion. Bimetal bimetal sensor consisting of two different coefficients of expansion of metal stick together and which consists varies with temperature, the material A than the other to a high degree of expansion of a metal, causing the metal sheet is bent. Bending curvature can be converted into an output signal. Temperature sensor manufacturers, Hebei temperature sensor, Xinfeng Xinfeng sensor provided by Xinxiang purification technology Limited. Xinxiang City Xinfeng purification Sensing Technology Co., Ltd. (www.xfcgq.com) strong, credible, Xinxiang in Henan sensor industry has accumulated a large number of loyal customers. The company better work attitude and continuous improvement will lead Xinfeng innovative ideas into the brilliant and you work for a better future!