热电偶和热电阻都是测量温度的元件，热电阻是电阻随温度变化的元件，而热电偶是热电势（电压）随温度变化的元件。一般热电阻用在低温，热电偶用在高温.
1.应用温度范围不同
热电阻一般用于300度以下，热电偶一般用于300度以上
2.材质不同
热电阻一般为纯的金属电阻丝制成，热电偶一般为两根不同材质的合金制成
3.接线（补偿）方式不同
热电偶需要专用的两线制补偿导线引出信号，热电阻一般是三根铜导线即可
4.信号不同

英文版：

Thermocouple and thermal resistance are measured temperature components, heat resistance is the resistance changes with temperature element, and the thermocouple is heat potential (voltage) changes with temperature element. Generally used in low temperature thermal resistance, thermocouple used in high temperature.Application of

1 different temperature range

The thermal resistance is generally used to below 300 degrees, 300 degrees above the general for thermocouple

2 different materials

The thermal resistance is generally made of pure metal resistance wire, thermocouple is generally made of two different materials of the alloy

The

3 wiring (compensation) in different ways

Thermocouple compensation wire special needs two wire leads to signal, the thermal resistance is generally three copper wires can be

4 different signal

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