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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]

References[edit]


Original courtesy of Wikipedia: http://en.wikipedia.org/wiki/Thermopile — Please support Wikipedia.
This page uses Creative Commons Licensed content from Wikipedia. A portion of the proceeds from advertising on Digplanet goes to supporting Wikipedia.

267 news items

Industrial Laser Solutions Magazine

Industrial Laser Solutions Magazine
Fri, 14 Aug 2015 14:22:30 -0700

Thermopile sensors have several advantages, including an extremely broad spectral range, the ability to work over a wide power range, high laser-damage resistance, and uniform spatial response (meaning insensitivity to changes in beam size, position, ...
 
MarketWatch
Tue, 01 Sep 2015 07:37:30 -0700

ZMDI is the global leader in mobile environmental sensing with solutions being demonstrated at the conference for UV/optical, barometric pressure, humidity, thermopile and gas sensing applications. Smart phone and wearable product development ...

Electropages (blog)

Electropages (blog)
Thu, 03 Sep 2015 03:07:30 -0700

It has 64 thermopile elements in an 8 x 8 grid format that detect absolute surface temperature without any contact. Unlike conventional sensors, Grid-EYE uses a patented 60 degree silicon lens etched out of a silicon wafer, which is (with less than 0 ...
 
PR Newswire (press release)
Wed, 26 Aug 2015 16:48:45 -0700

In this report, the Middle East & Africa IR detector market has been broadly classified into five main technologies, namely MCT, InGaAs, pyroelectric, thermopile, and microbolometer. MCT or mercury cadmium telluride is majorly manufactured by cooled ...

AZoSensors

AZoSensors
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.

AZoSensors

AZoSensors
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 ...

AZoSensors

AZoSensors
Thu, 19 Mar 2015 09:16:48 -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 ...

Novus Light Technologies Today

Novus Light Technologies Today
Fri, 14 Aug 2015 07:48:45 -0700

Temperature monitoring: All thermopile detectors have a temperature-dependent output signal. The B01-SMC and B05-SMC contain a NTC temperature sensor next to the detector on the PCB to continuously monitor the module temperature if required by the ...
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