Three-wire: Connect one end of the thermal resistance of the heat resistance of the base of a lead offer, and the other end connected to two leads of armor is called three-wire armored thermal resistance, this approach is usually associated with supporting the use of the bridge, you can better eliminate the effects of lead resistance, industrial process control most commonly used. Four-wire system: at the root ends of the thermal resistance of the connecting two wires is called four-wire system, where the two leads provide a constant current I is the thermal resistance, the R is converted into a voltage signal U armored thermal resistance price, then The other two leads through the U lead to secondary instrument. This approach can be seen completely eliminate lead wire resistance influence, mainly for high-precision temperature testing. Installation Note 1, the thermal resistance should be mounted vertically on a horizontal or vertical pipe should be installed with a protective sleeve to facilitate maintenance and replacement. 2, when measuring the temperature inside the tubes, element length should be at the center line of the pipe (ie protective tube insertion depth should be half the diameter). 3, when the temperature of the moving coil meter installation, hole size to the right, to be nice to install. 4, the high temperature zone temperature compensation using a high temperature cables or lines. 5. To select a different measuring element, depending on temperature. Select the thermal resistance of less than 400 ℃ general measure temperature. 6, the wiring should be reasonable and beautiful, hands instructed to correct. Armored thermal resistance production | Anhui armored thermal resistance | armored forces since the instrument measuring the thermal resistance provided by the Shanghai Automation Instrumentation Co. measured. Shanghai Automation Instrumentation Co., force measurement (www.licesh.com) strong, credible, in Shanghai Zhabei District, flow meters and other industries has accumulated a large number of loyal customers. The company better work attitude and constantly improving innovative ideas will lead the force measured since the instrument into the brilliant and you work for a better future!