Temperature Sensor is an innovative device that senses and measures the temperature of a specific area. A digital temperature sensor  provides temperature measurement through electrical signals and an attached digital readout is used to display the indicated temperature value. As all other measuring devices, temperature sensor calibration is also recommended. 

According to experts, all temperature sensors may need a proper temperature sensor calibration after shifting it to another temperature range, placing it in a particular temperature for so long and if a sensor is hit or dropped. It is a good practice to calibrate a certain temperature sensor at a regular interval. 

3 Common Types of Temperature Sensor:

Resistance Temperature Detector (RTD) – sensor whose resistance changes as its temperature changes. The resistance increases when the temperature of sensor increases. Common range is between -200 to 670 °C, with accuracy ±0.025 °C.

Thermistor – a thermally sensitive resistor made from ceramic or polymer. It exhibits a continuous, small, incremental change in resistance correlated to temperature variation. Common range is between -50 to 150 °C, with accuracy ±0.1 °C.

Thermocouple – sensor consists of two different electrical conducting wires, with different metals electrically bonded forming an electrical junction. The varying voltage created between these two dissimilar metals reflect proportional changes in temperature. Common thermocouple (Type K) range is between -200 to 1350 °C, with accuracy ±0.5 °C.

All types of temperature sensor accuracy will drift regardless of make or class. Factors include extreme temperature usage, handling method, storage, environmental contamination etc. The only way to know if your temperature sensor has drifted is through calibration.

Metcal can provide ISO 17025 Accredited temperature sensor calibration from -95 to 1200 °C.

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