3, the thermal resistance of the structure is usually resistance thermometer is the thermal resistance (in part by the temperature sensing elements), the connecting wires and other components Thermometer. The thermal resistance is a resistance (also known as temperature sensitive element), lead, insulated casing and other components. For use as a thermal resistance of the material, such as resistance wire skeleton (or stand), wire, tube, and a heat exchange medium and the production process, and so proof RTD picture, there are certain requirements. Three-wire: Connect one end of the heat resistance of the base of one of the leads, and the other end connected to the two leads is called three-wire RTD offer proof that this approach usually associated with the bridge supporting the use of explosion-proof thermal resistance Main, can better eliminate the effects of lead resistance, industrial process control most commonly used. Four-wire system: the root ends of the thermal resistance of the connecting two wires is called four-wire system, which provides a constant current I lead two proof thermal resistance of the heat resistance, the R into a voltage signal U, and then by another The two leads U lead to the second instrument. Seen this way can lead to completely eliminate lead resistance effect, mainly for high-precision temperature testing. Changchun proof RTD | Shanghai Automation Instrumentation force measurement | Explosion thermal resistance force distribution measured by the Shanghai Automation Instrumentation Co., Ltd. "Industrial thermocouple, RTD, transmitters, flowmeters, intelligent instruments, actuators' preferred measure of the Shanghai Automation Instrumentation Co., Ltd. (www.licesh.com), the company is located: Zhabei District, Shanghai Luochuan Road 638 No, for many years, since the force measuring instrument to provide customers with the best quality service, contact: Hua powder. Welcome to the new and old customers call, letter, visit the guide, business negotiations. Force measurement since the instrument expect to be your long-term partner!