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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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1124 news items

Thu, 26 Nov 2015 04:06:28 -0800

Pacer offers the Excelitas range of thermopile detectors for gas sensing and monitoring. The devices are fitted with bandpass filters for gas detection, and have a high signal output for optical gas detection. These products use chips with a large ...
Business Wire (press release)
Thu, 12 Nov 2015 09:03:45 -0800

The report, Global Infrared Sensors Market 2015-2019, has been prepared based on an in-depth market analysis with inputs from industry experts. The report covers APAC, the Americas, Europe, and ROW; it also covers the landscape of the global IR sensors ...

Electropages (blog)

Electropages (blog)
Fri, 06 Nov 2015 06:37:34 -0800

Panasonic's Grid-EYE infrared array sensor is now available from TTI Europe. Contrary to conventional thermal sensors that only measure temperature of a certain point-of-contact, Grid-EYE, based on Panasonic's MEMS technology, can measure temperature ...


Tue, 03 Nov 2015 07:56:15 -0800

We settled on a thermopile. Thermopile sensors monitor temperatures of what they are looking at by analysis the infra-red being emitted. It performed 64 unique temperature measurements 15 times per second which was read by an Arduino UNO before the ...


Thu, 01 Oct 2015 07:52:47 -0700

This article briefly shows how to make radiometric measurements using thermopile detectors. However, before taking measurements, the cold junction temperature of the thermopile has to be approximated. Dexter has included internally mounted thermistors ...
PR Newswire (press release)
Wed, 04 Nov 2015 08:52:20 -0800

The report also analysis market based on technology: Thermopile, Pyroelectric, Microbolometers, InGaAs and MCT. This research report estimates the IR sensor market in APAC to record a little over USD 239 million in revenue, until 2019. The market is ...


Fri, 24 Apr 2015 07:46:04 -0700

Kipp & Zonen had been involved in the manufacture of a fast and sensitive thermopile used for the measurement of light and thermal radiation since 1913. The design, which was made up of several thermocouples, was by Dr. Moll of Utrecht University.


Wed, 04 Nov 2015 07:11:15 -0800

(Nanowerk News) Movies such as 1987's “Predator,” in which an alien who sees in the infrared hunts down Arnold Schwarzenegger and his team, introduced a generation of sci-fi fans to thermal imaging. Since then, heat-sensing devices have found many ...

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