What Is an Infrared Thermometer?

An infrared thermometer is a device that measures the temperature of an object by releasing infrared energy. The infrared energy is released as a laser, which passes through a small hole called the IR sensor in the gadget. As the laser passes through the substance, it “sings” its temperature alarm to the device’s sensors, which then relay the information to the computer which keeps a record of the temp. The computer then computes and displays the estimated temperature.

ir thermometer


There are mainly two kinds of infrared thermometers-lens thermometers and pinhole thermometers. Lens thermometers have a transparent glass tube or container with a transparent ir sensor inside, which captures the infrared signal. They have a special knob or dial which can be used to adjust the temperature. Pinchhole thermometers have a hole that’s slightly larger than the ir sensor inside, and when the IR sensor senses the energy, the glass tube opens and releases the heat. However, this type doesn’t have any kind of display, thus making it much easier to manually adjust the temperature.


Now let’s see how these kinds of thermometers work. With the introduction of new technology, manufacturers created glossy covers for their ir thermometers that make the device’s surface stand out from other kinds of thermometers. Usually, the lids have transparent vinyl, metallic or plastic lenses that reflect or refract the infrared light, which passes through the device. These special “glow in the dark” surface cover to make the temperature readings more accurate, because the glows on shiny surfaces create a reflection effect, which makes objects cooler than darker surfaces do. When it comes to cleaning, all you have to do is wipe the surface with a cloth. You can also use a small amount of water and a damp cloth to remove any dust particles or oily residues from the lens.

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