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Not to be confused with Thermopylae.
Thermopile, composed of multiple thermocouples in series. If both the right and left junctions are the same temperature, voltages cancel out to zero. However if one side is heated and other side cooled, resulting total output voltage is equal to the sum of junction voltage differentials.

A thermopile is an electronic device that converts thermal energy into electrical energy. It is composed of several thermocouples connected usually in series or, less commonly, in parallel.

Thermopiles do not respond to absolute temperature, but generate an output voltage proportional to a local temperature difference or temperature gradient.

Thermopiles are used to provide an output in response to temperature as part of a temperature measuring device, such as the infrared thermometers widely used by medical professionals to measure body temperature. They are also used widely in heat flux sensors (such as the Moll thermopile and Eppley pyrheliometer)[1][2][3] and gas burner safety controls. The output of a thermopile is usually in the range of tens or hundreds of millivolts.[4] As well as increasing the signal level, the device may be used to provide spatial temperature averaging.[5]

Thermopiles are also used to generate electrical energy from, for instance, heat from electrical components, solar wind, radioactive materials, or combustion. The process is also an example of the Peltier Effect (electric current transferring heat energy) as the process transfers heat from the hot to the cold junctions.

See also[edit]

  • Seebeck effect—the physical effect responsible for the generation of voltage in a thermopile.
  • Thermoelectric materials—high-performance materials that can be used to construct a compact thermopile that delivers high power.

External links[edit]


Original courtesy of Wikipedia: http://en.wikipedia.org/wiki/Thermopile — Please support Wikipedia.
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1408 news items


Thu, 12 Mar 2015 07:26:15 -0700

A thermopile detector is a passive radiation sensing voltage-generating device. It does not emit any radiation and require cooling or bias. Dexter Research Center (DRC) provides stable, high output radiation sensing thermopile detectors covering linear ...


Thu, 19 Mar 2015 09:07:30 -0700

The robust package is designed for straightforward system integration. and the detector signal is amplified and normalized to facilitate read-out. The major differentiation to other thermopile detectors is, however, the signal rise time, which is a ...
Fri, 13 Mar 2015 08:45:00 -0700

Time constant, signal-to-noise ratio (SNR), responsivity and output voltage are the four key performance parameters affected based on the selection of an encapsulating gas in a thermopile detector package. The effect of the molecular thermal ...


Tue, 17 Mar 2015 08:22:30 -0700

Dexter's 2M quad thermopile detector is a four-channel thin-film thermopile compactly placed in a TO-8 package. All the active areas measure 2mm x 2mm. The detector provides exceptional four-channel sensitivity with excellent signal- to-noise performance.


Tue, 17 Mar 2015 08:22:30 -0700

The digital ST120 dual thermopile available from Dexter is designed to provide rapid development as it has a built-in integrated amplifier, A/D, DSP, MUX and communication protocol. It is also easy to integrate, and is offered by Dexter in 3V or 5V ...

AZoOptics.com (press release)

AZoOptics.com (press release)
Thu, 12 Mar 2015 06:52:30 -0700

Thermopile sensors operate in a different manner to photodiodes. The incident radiation on the absorption layer of the sensor surface is converted into heat energy. The heat is allowed to flow through the module, causing a temperature difference across it.
PR.com (press release)
Thu, 05 Mar 2015 01:33:45 -0800

So far, the Second Class thermopile pyranometer CMP3 Kipp & Zonen were installed at the WS family. In the new WS510-UMB, a compact weather sensor of the Secondary Standard CMP10 pyranometer by Kipp & Zonen was integrated for the first time, ...
Design News
Fri, 18 Apr 2014 03:02:13 -0700

Gadget Freak Case #253: Peltier Thermopile Cloud Sensor. Eric Chesak created a sensor that can detect clouds, and it can also measure different sources of radiation. Click here for build instructions, BOMs, and more. NO RATINGS. Login to Rate. 4/18 ...

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