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Not to be confused with Thermopylae.

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]


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

R & D Magazine

R & D Magazine
Tue, 29 Jul 2014 07:15:00 -0700

StarLite monitors power and energy for all Ophir thermopile, pyroelectric, and photodiode sensors. The meter can also monitor laser beam size and accurately track beam position to fractions of a mm when used with Ophir's BeamTrack, Ophir's thermal ...
Fri, 18 Jul 2014 11:00:00 -0700

Measurement products such as a thermopile power puck and the laser mode plate give an indication of how the laser is performing at a given point in time, but they do not provide the laser technician with a complete understanding of the laser's ...
Thu, 17 Jul 2014 07:34:24 -0700

They are based on thermopile technology for broad spectral sensitivity with exceptional flatness and long term stability. The Solar Light Company's PMA2144 is an ISO-classified Class 11 Pyranometer. It has a precision optical glass dome allowing the ...
Marketwired (press release)
Tue, 15 Jul 2014 06:30:00 -0700

0.0003°C and very important an interchangeability of +/- 1%. One of the main reasons for the unique performance of the IR sensor is the custom designed and built thermopile based sensor. The Exergen and M&R mechanical teams found the right solution for ...

Laser Focus world

Laser Focus world
Thu, 10 Jul 2014 13:03:45 -0700

Laser-beam diagnostics have always included a way to measure the intensity of the beam—either the average power or the energy of each laser pulse. This is accomplished using thermopile and quantum-type sensors to measure the average power or with ...
Tue, 15 Jul 2014 02:00:00 -0700

Thorlabs has currently integrated greenTEG's gSKIN® sensors in two of its products: the S401C High-Sensitivity Thermal Power Sensor and the PM 160T Handheld Power Meter. greenTEG's gSKIN® sensors are based on thermopile technology and offer a ...

Vision Systems Design

Vision Systems Design
Mon, 30 Jun 2014 09:52:30 -0700

The report classifies the infrared sensors by range: Near infrared (NIR), shortwave infrared (SWIR), mid-wave infrared (MWIR), and long wave infrared (LWIR), as well as types, which include passive infrared, thermopile, pyro-electric, microbolometer ...

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