The video speaks about how to perform 3 wire RTD connection on temperature transmitter . Know more about wirings on temperature transmitters . Learn about 2 wire rtd , 3 wire rtd and 4 wire rtd .
3-wire and 4-wire resistance temperature detector (RTD) are two types of sensors used to measure temperature by detecting changes in electrical resistance.
In a 3-wire RTD, two wires connect to the sensing element and the third wire serves as a compensation lead. This compensation lead helps to eliminate the effect of lead resistance and provide more accurate temperature readings.
On the other hand, a 4-wire RTD has two additional wires that serve as independent current-carrying conductors, which eliminates the effect of lead resistance entirely. This results in even more accurate temperature measurements than a 3-wire RTD.
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