RTD Sensor Instrument Information
Similar to a thermocouple, RTD sensors are a sensor used to measure temperature. Most commonly, it is an element consisting of a length of wire, typically platinum, nickel or copper, wrapped around a ceramic or glass core. These metals are chosen due to their consistent resistance versus temperature relationship. As the measured resistance of the probe changes, the device it is used in conjunction with senses this change and provides a readout of the corresponding temperature. An RTD probe is very similar to a thermistor, with the exception that an RTD probe uses pure metals
Common Uses
Often offering greater stability, accuracy, repeatability and a wider range than thermocouples, RTD sensors are used in temperature measuring applications (commonly of liquid, air, gas and surfaces) where these parameters are critical.
Common Types
- Thin-Film
- Wire-Wound
- Coil-Element
Measurement Parameter
Temperature
Calibration Discipline
Calibration Equipment Used
- Multimeters
