Resistance Thermometer

Resistance thermometers or thermometers to resistance are temperature transducers, which are based on the dependence of the electrical resistance of a material with temperature, ie are able to transform a variation of electrical resistance in a variation of temperature. The resistance thermometer is used to measure a temperature between 200 ° C and 3568 ° C. The resistance thermometer operates in a range of -200 ° C to + 850 ° C to a temperature of + 1760 ° C with a resolution of 0.1 ° C over the entire measurement range. History

As early as 1821 Sir Humphry Davy had observed that the electrical resistance of materials varied as their temperature varied, but it was not until 1871 that William Siemens proposed the use of platinum as a thermometer based on this effect. The construction methods for these thermometers were established between 1898 and 1900. Advertisement ad feedback

The materials most used as resistance thermometers are platinum, copper and tungsten. Platinum has the characteristic of having an extremely linear resistance-temperature relationship, which is why it is the most widely used material and is generally referred to as the Industrial Platinum Resistance Thermometer (IPRT) or RTD (Resistance Temperature Detector) thermometers. Platinum has the advantages of:

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