Metrology Glossary: Thermocouple (TC)
What Is A Thermocouple?
A thermocouple (TC) is a specialized temperature sensor that uses two dissimilar metal conductors joined at one end to form a junction, which serves as the point for temperature measurements. When the junction encounters a temperature change, it generates a voltage directly proportional to the temperature difference between the junction and the reference temperature. This voltage is typically measured in millivolts and, with reference to standardized thermocouple tables, enables precise temperature calculations. Thermocouples are widely used in various industrial and scientific applications for their wide temperature range, durability, and precision in temperature monitoring and control.
What Are Thermocouples Used For?
- Extensive Temperature Measurement Capability: Thermocouples exhibit versatility in temperature measurement, spanning from cryogenic conditions near absolute zero to exceedingly high temperatures surpassing 3000°C. This broad temperature range renders them well-suited for diverse applications spanning multiple industries.
- Resilience in Challenging Environments: Thermocouples demonstrate robustness and resilience in adverse conditions, such as high pressure, vibrations, and exposure to chemicals. This inherent durability makes them particularly well-suited for deployment in industrial environments where other sensors may face difficulties.
- Accurate Temperature Monitoring and Regulation: Thermocouples deliver precise and reliable temperature measurements, facilitating meticulous control in diverse processes. This precision plays a pivotal role in ensuring quality and safety across a spectrum of industrial and scientific applications.
Related Terms
A thermocouple calibrator is an essential tool used in temperature measurement. It serves to validate the accuracy of thermocouples, which function as temperature sensors by converting temperature differences into electrical...
Thermocouple break protection is a safety measure for identifying and addressing thermocouple circuit failures, crucial for averting thermal runaway....
Loop resistance comprises the combined resistance of both the thermocouple wires and any connectors or terminals within the circuit....
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Further Reading
When electrifying your mobile equipment, thermal management is an important consideration. The thermal management needs of electric vehicles (EV) are significantly different from those of internal combustion engines (ICE) and must be considered when planning for electrification.
November 23, 2022
