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Infrared Thermometers

Infrared Thermometers

Digital-display thermometers that use probe or infrared (no-touch) measurements; may be traceable or certified to international standards; in various formats, temperature-range capacities and accuracies; may include memory log feature.

Many industries depend on digital infrared thermometers for measuring the surface temperature of objects. Infrared thermometers are versatile instruments that have many applications because of their ease of use and accuracy.

Although the mechanics of these devices are somewhat complex, the concept is fairly straightforward. Objects with mass emit energy, usually in the form of heat. An infrared thermometer collects the infrared radiation coming from the object into a thermopile or detector. The thermopile transforms the infrared radiation into heat, which subsequently is converted to electricity. The electrical signal can be quantified, which becomes the number displayed on the digital thermometer.

Digital infrared thermometers can produce readings in a matter of seconds, a function that is very useful in many situations. In addition, digital infrared thermometers are known for:

  • Accuracy: Provided that the thermometer is properly used and calibrated/certified
  • Safety: No need to touch or handle the object
  • Non-contamination: A non-invasive method, although its use is therefore limited to measuring surface and not interior temperatures
  • Durability: Withstands rough handling and the demands of job sites and workshops

Choose an infrared thermometer that will measure within your specific temperature range. Infrared thermometers also vary in their distance-to-spot ratio, which refers to the maximum allowable distance from the object for accurate readings.

Digital infrared thermometers have recently decreased in cost, so they are now more affordable. NIST-traceable units are also available.

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