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, also known as the thermometer. Thermometer by conduction or convection thermal equilibrium, 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, the thermometer can also 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 temperature sensor, the temperature within the range of 1.6 ~ 300K can be used for measurement. Errors introduced due to the thermal inertia of the thermal inertia of the thermocouple indicated value of the instrument behind the measured temperature changes, during the rapid measurement of this effect is particularly prominent. It should be fine as far as possible the hot electrode, thermocouple protection tube diameter smaller. When the temperature conditions permit even take away the protective tube. Because of the lag measurements, thermocouple temperature fluctuations of the detected amplitude than the furnace temperature fluctuation amplitude is small. Measurement lag, the smaller the amplitude fluctuation thermocouple, the difference between the actual oven temperature and the greater. When using a large time constant thermocouple or temperature, the temperature fluctuations in the instrument display, although very small, but the actual oven temperature fluctuations may be significant. In order to accurately measure the temperature, the time constant should be selected small thermocouple. The time constant and the heat transfer coefficient is inversely proportional to the diameter of the thermocouple hot end, the material is proportional to the density and specific heat pt100 temperature sensor, such as to reduce the time constant of the temperature sensor works, in addition to increasing the heat transfer coefficient temperature sensor applications, the most effective approach is to minimize the size of the hot end. Use, usually good thermal conductivity materials, thin wall, the inner diameter of the small protective casing. In the more precise temperature measurement, using no bare wire thermocouple protection tube, but is easy to damage the thermocouple should be promptly corrected and replaced. Temperature sensor brand, Jiaozuo 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!