To understand how an infrared thermometer works we must know that all matter, therefore every object lets loose energy in the form of thermal radiation. What an IR thermometer does is obtain a part of this radiation from a given object and measure it by sending IR light and then absorbing its reflection. A portion of thermal radiation “caught” goes through a lens to a detector, which absorbs this radiant power and then converts it in heat, after – in electricity. The electrical signal then outputs the result onto the display, performed in digits of temperature.
Measurements can be taken from a distance: So, hot surfaces or objects can still be measured without the risk of getting hurt or damaging the electrical instruments. Distance-measuring also keeps the measured object from contamination in settings such as food service. Finally, hard-to-reach areas won’t require superhuman contortion as they can be measured with this technology.
Suitable for a variety of applications: From plant maintenance to automotive repair to the previously-mentioned food service measurements, infrared technology is versatile and its uses continue to evolve and expand.
Advanced features: such as switchable optics for up close to long distance focus, laser targeting/emissivity adjustment, data storage, high and low-temperature alarms, and more, make these units as sophisticated as you want them to be.
Log per-second readings: Rather than wait a few minutes to get a reading, as may be typical with a contact measuring instrument, these units are quick. Infrared thermometers measure temperatures with several readings per second.
An important thing to mind when making your measuring is a ratio and a target size! The distance-to-spot ratio (D:S) indicates the size of the measurement field that a non-contact infrared thermometer uses to provide a temperature reading. The larger the ratio, the better the resolution and the smaller the area that can be measured.