4 line thermal resistance due to its low cost, high accuracy and can be repeated has become the preferred laboratory applications

Some materials ( E. g. , platinum, copper and nickel) The heat resistance at different temperature are different. Resistance temperature detector ( RTD） Use this feature to evaluate the temperature in the various commercial and industrial applications. Described using a third conductor to measure the three resistance and the influence of some compensation of temperature measuring the resistance of the wire, especially in some cases, the temperature sensor from temperature transmitter. 3 line heat resistance than basic 2 line more accurate thermal resistance, very suitable for most industrial applications. 3 line heat resistance is not considered, however, may affect the sensors resistance factors, such as wire length, specifications and composition, contact oxidation and cabling factors, pins, and exert the environmental conditions. 4 line heat resistance increased the fourth wire, can be used as a real bridge circuit. The 4 line configuration allows for any problems lead to constant compensation. 4 line heat resistance than 3 line heat resistance is slightly more expensive, but they are very precise and repeatable - Even more than 3 line thermal resistance.

when need 4 line heat resistance?

4 line heat resistance is the first selection of laboratory application sensor, the precision, accuracy and repeatability is very important. Application of laboratory focus on design, improvement, simplify and test security, repeatable process, and can be used as a routine use in industrial and commercial applications. Laboratory application, therefore, need the best available equipment, to ensure that the laboratory results found in the process of implementation of the appropriateness of the feasibility and quality. Another 4 line heat resistance is the best choice of area is calibrated. And laboratory applications, 4 line heat resistance bridge circuit provides the lead resistance compensation can provide the necessary to perform meaningful calibration accuracy, precision and repeatability.

select 4 thermal resistance:

in the market has a lot of high quality, affordable 4 line heat resistance. Three chang instrument for many years has been engaged in the design and manufacture of heat resistance, is the main supplier of the global thermal resistance. Its thermal resistance in accordance with DIN EN 60751 standard. 4 line heat resistance can be with or without temperature transmitter, thermal resistance and other manufacturers to provide these four lines temperature transmitter compatible. I plant production of heat resistance selection for laboratory and calibration application offers a variety of choices. TR10 series 4 line heat resistance, for example, versatility and the price is reasonable. They can configure thermowells or directly into the process. They have entrance to protect, and USES the different wires and sheath material, suitable for the application of corrosion resistance and high temperature oxidation environment. They are intrinsically safe explosion-proof, suitable for the dangerous sites. Can also be customized for a particular application, thermal resistor and provide for example, has the very high vibration 4 line thermal resistance, used for gas compressor bearing components. Immediately contact us to discuss your requirements, and find the best choice for your application.