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Resistance thermometer

Sheath resistance thermometers are also used very successfully alongside sheath thermocouples for precise temperature measurement. The temperature range of sheathed resistance thermometers is from -200°C to +600°C.
Compared to the thermocouples, the resistance thermometers have an even higher accuracy due to the 4-wire circuit from the measuring resistor. The copper lead wires are embedded in a compact insulation of MgO and encased in a stainless steel sheath. This gives the resistance thermometers, similar to thermocouples, a good pliability.

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