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2. Infrared thermometer - Wikipedia

   en.wikipedia.org/wiki/Infrared_thermometer

   The most common infrared thermometer is the spot infrared pyrometer or infrared pyrometer, which measures the temperature at a spot on a surface (actually a relatively small area determined by the D:S ratio). These usually project a visible red dot onto the center of the area being measured that identifies the spot being measured, but plays no ...

3. These Infrared Thermometers Can Check Temperatures Without ...

   www.aol.com/infrared-thermometers-check...

   Mobi Non-Contact Forehead Thermometer. Price: $45 from Walmart Buy It This infrared thermometer is a top seller at Walmart, and most buyers give it positive marks (including some business owners ...

4. Thermometer - Wikipedia

   en.wikipedia.org/wiki/Thermometer

   An infrared thermometer is a kind of pyrometer . All objects above absolute zero emit blackbody radiation for which the spectra is directly proportional to the temperature. This property is the basis for a pyrometer or infrared thermometer and thermography. It has the advantage of remote temperature sensing; it does not require contact or even ...

5. Thermography - Wikipedia

   en.wikipedia.org/wiki/Thermography

   For a non-contact temperature measurement, the emissivity setting needs to be set properly. An object of low emissivity could have its temperature underestimated by the detector, since it only detects emitted infrared rays. For a quick estimate, a thermographer may refer to an emissivity table for a given type of object, and enter that value ...

6. Active thermography - Wikipedia

   en.wikipedia.org/wiki/Infrared_non-destructive...

   This principle can be used also for non-contact [1] infrared non-destructive testing (IRNDT) of materials. [2] The IRNDT method is based on an excitation of a tested material by an external source, which brings some energy to the material. Halogen lamps, flash-lamps, ultrasonic horn or other sources can be used as the excitation source for the ...

7. Pyrometer - Wikipedia

   en.wikipedia.org/wiki/Pyrometer

   This output is used to infer the object's temperature from a distance, with no need for the pyrometer to be in thermal contact with the object; most other thermometers (e.g. thermocouples and resistance temperature detectors (RTDs)) are placed in thermal contact with the object and allowed to reach thermal equilibrium.