What are the wiring methods for thermal resistors? 2

[R_T = R_0(1 + alpha T)]

Among them, (R_T) is the resistance value at temperature (T), (R0) is the resistance value at reference temperature (usually 0 ° C), (alpha) is the temperature coefficient of the material, and (T) is the temperature. This linear relationship is valid within a certain range, but in a wider temperature range, more complex polynomials may be needed to accurately describe the relationship between resistance and temperature.diode

Wiring method of thermal resistance

The wiring methods of thermal resistors mainly include two-wire, three wire, and four wire systems.

1. Two wire system: This is the simplest connection method, consisting of two wires connecting the thermistor and measuring equipment. Although the wiring is simple, the resistance of the wires themselves can affect the accuracy of measurements, especially when the wires are long.diode

2. Three wire system: In order to reduce the impact of wire resistance on measurement results, three wire heating resistors have emerged. In this configuration, the third wire serves as a compensation line to measure and counteract the effects of wire resistance. This method is relatively accurate and is the most common wiring method in industrial applications.

3. Four wire system: The four wire system provides the most accurate measurement, almost completely eliminating the influence of wire resistance through two power lines and two measurement lines. This method is suitable for application scenarios that require extremely high accuracy diode