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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.

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]


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108 news items

Tue, 22 Apr 2014 08:22:29 -0700

greenTEG, a company that develops, manufactures and markets a new generation of heat flux and radiation sensors and thermoelectric generators, has developed a new, advanced thermopile sensor that helps in characterizing laser power parameters ...
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. NO RATINGS. Login to Rate. 4/18/2014 | Post a comment. Comment | Print | RSS ...

AZoOptics.com (press release)

AZoOptics.com (press release)
Wed, 23 Apr 2014 02:33:45 -0700

The probe portfolio consists of pyroelectric and thermopile detectors, with a spectral response range of 200nm to 20µm, and a variety of broadband and filtered Si and Ge probes. Analog output enables data storage and analysis by means of dedicated or ...
AZoOptics.com (press release)
Wed, 23 Apr 2014 02:33:45 -0700

Such a configuration is called a thermopile, which shows no licker, 1/f, noise as it does not require current bias for operation. Highly sensitive measurements can be performed, from DC to the few Hz frequency response limits of a specific device ...
Mon, 07 Apr 2014 03:22:45 -0700

They include a wide choice of broadband and filtered Si and Ge probes and thermopile and pyroelectric detectors for sensitive detection from 200 nm to 20µm. Analog output facilitates data storage and analysis by means of dedicated or PC based data ...
Solar Plaza (press release)
Tue, 15 Apr 2014 05:50:52 -0700

The SR20-D1 digital pyranometer employs a state-of-the-art thermopile sensor with black coated surface, two domes and an anodised aluminium body. The connector, desiccant holder and sun screen fixation are very robust and designed for long term ...
Tue, 01 Apr 2014 16:48:45 -0700

High resolution bolometer-based cameras are widely used for exterior night vision applications. The recent introduction of cost-effective lower resolution thermopile-based far infrared (FIR) cameras is extending the potential application range greatly ...

Sunday Leader

Sunday Leader
Sat, 05 Apr 2014 12:30:00 -0700

The UN building was formerly a slaughter house for animals and stands along the East River, a block, 39 storeys high, breadth greater than a city block fronting a curtain wall of blue-green Thermopile glass. Even architect, Frank Lloyd Fright called ...

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