Commonly used industrial metal thermal resistance from the resistance changes with temperature, most of the metal conductors have this property, but can not be used as the thermal resistance temperature, the thermal resistance as a metal material general requirements: as large as possible and stable The temperature coefficient of resistivity to be large (to reduce the size of the sensor at the same sensitivity), having stable chemical and physical properties in the temperature range, good copy material, the resistance value have a relation between the value of the function changes with temperature (best linear relationship). The purity of platinum resistance ratio usually expressed: W (100) = R100 / R0 R100 represents a resistance value of 100 ℃ when; R0 represents the resistance value at 0 ℃ according to the IEC standard, the use of W (100) = 1.3850 initial resistance value R0 = 100Ω (R0 = 10Ω) of platinum resistance for industry standard platinum resistance, R0 = 10Ω platinum resistance thermometer resistance wire thicker offer intelligent thermal resistance, mainly used to measure the temperature above 600 ℃. Platinum resistance and temperature resistance of the equation for a piecewise equation: Rt = R0 [1 + At + Bt2 + C (t-100 ℃) t3] t represents -200 ~ 0 ℃ Rt = R0 (1 + At + Bt2) t represents 0 ~ 850 ℃ Solutions in this equation can be based on the resistance value of the known temperature value, but the actual work, the thermal resistance can check the indexing table to determine the temperature value based on the resistance value. According to standard intelligent thermal resistance manufacturers, platinum RTD is divided into A and B grades, A-level temperature tolerance ± (0.15 ℃ + 0.002 | t |), Class B temperature tolerance ± (0.3 ℃ + 0.005 | t |). Intelligent thermal resistance measurement since the instrument power supply _ Intelligent thermal resistance _ Intelligent thermal resistance provided by the Shanghai Automation Instrumentation Co. measured. Shanghai Automation Instrumentation Co., force measurement (www.licesh.com) is the Shanghai Zhabei District, flow meters leaders, over the years, the company is implementing the scientific management, innovation and development, the principle of honesty and trustworthiness, and satisfy customer needs. Since the force measuring device leadership with the staff warmly welcome all inquiries negotiations to create the force measuring instrument since a better future.