thermocouple

[ thur-muh-kuhp-uhl ]

noun

, Physics.

1. a device that consists of the junction of two dissimilar metallic conductors, as copper and iron, in which an electromotive force is induced when the conductors are maintained at different temperatures, the force being related to the temperature difference: used to determine the temperature of a third substance by connecting it to the junction of the metals and measuring the electromotive force produced.

thermocouple

/ ˈθɜːməʊˌkʌpəl /

noun

1. a device for measuring temperature consisting of a pair of wires of different metals or semiconductors joined at both ends. One junction is at the temperature to be measured, the second at a fixed temperature. The electromotive force generated depends upon the temperature difference
2. a similar device with only one junction between two dissimilar metals or semiconductors

thermocouple

/ thûr′mə-kŭp′əl /

1. A thermoelectric device used to make accurate measurements of temperatures, especially high temperatures. It consists of a circuit having two wires of different metals or metal alloys welded together. A temperature gradient across the junction of the wires gives rise to an electric potential by the Seebeck effect. This potential varies with the strength of the temperature gradient and can be measured by a voltmeter. Thermocouples can also be used to generate small amounts of electricity for powering other devices.

thermocouple

1. A device for accurate measurement of temperature. A thermocouple consists of two dissimilar metals joined at two joints in a loop so that the difference in voltage can be measured. Because voltage changes in proportion to temperature, the voltage difference indicates temperature differences.

Word History and Origins

Origin of thermocouple¹

First recorded in 1885–90; thermo- + couple

Word History and Origins

Origin of thermocouple¹

C19: from thermo- + couple

Example Sentences

The temperature in 27 different locations in the liquid metal was measured with an attachment to the growth chamber having an array of nine thermocouples that was designed and built by Seong.

From Science Daily

All you need to know about thermocouple sensors is that they’re a type of thermometer, and they use metal wires to take the readings.

From Scientific American

The company says it spent more than five years developing the new thermometer, which features an improved thermocouple system developed in conjunction with Electronic Temperature Instruments to balance the faster speed with the delicate electronics.

From The Verge

At the end of phase 2, I'll gently brake to a stop, monitor the brake pressure required and keep an eye on the brake temperatures to confirm the thermocouples appear to be working.

From BBC

So, after this first test, he arranged for thermocouples, a type of sensor, to measure the changing temperature of the stack’s environment.

From Economist