Many types of sensors offer a temperature sensor, heat resistance frequently used: PT100, PT1000, Cu50, Cu100; Thermocouple: B, E, J, K, S and the like. Temperature sensor not only a wide range of sensor production, and a combination of various forms, should choose the right products based on different premises. Measurement principle: based on the principle of the sensor resistor, the potential of the different thermocouple with temperature changes occur regularly, we can obtain the desired temperature value measured. Under normal circumstances linearity, the actual output of the sensor is static characteristic curve rather than a straight line. In practice, as the instrument readings with a uniform scale, commonly used to fit a straight line approximation to represent the actual characteristic curve, linearity (nonlinear error) is the approximate extent of a performance. Fitting a straight line to select a variety of methods. Such as the theory of linear zero input and full-scale output as fitting a straight line connecting point; or the square of the deviation of each point on the curve and the straight line is the theoretical minimum as fitting a straight line, this is called a linear least-squares fitting quasi fit straight line. Nanjing Iveco sensor, Xinfeng (certified), Xinyang sensor consists of Xinxiang City, Xinfeng Sensing Technology Co., Ltd. to provide clean. Xinxiang City Xinfeng purification Sensing Technology Co., Ltd. (www.xfcgq.com) (www.xfcgjh.com) is an industry leader in Henan Xinxiang, sensors, over the years, the company is implementing the scientific management, innovation and development, the principle of honesty and trustworthiness, the maximum limits to meet customer needs. In Xinfeng leadership with the staff warmly welcome all inquiries negotiations to create a better future Xinfeng.