By detecting the IR rays, we can perceive the temperature range. A temperature gun—a type of infrared thermometer—works by measuring the amount of infrared radiation emitted by an object. T is the temperature of the black body in Kelvins. The higher the temperature of the body, the more will be the vibrations in the molecules of the body and the radiation emission. The radiation from an object is sensed by the sensor and it captures the radiation. SIGN UP & AUTOMATICALLY BE ENTERED TO WIN A GENERAL GENIUS AT WORK T-SHIRT! Infrared thermometers work based on a phenomenon called black body radiation. IV The Working Principle of Infrared Thermometer The infrared thermometer consists of the optical system, photodetector, signal amplifier, signal processing and display output. Infrared Thermometer how it works? If the equipment is hotter than it should be on the surface, there is a good chance that something is going wrong internally. To measure that same area with an 8:1, you would need to be standing 8 inches away. GENEVA, OH, November 14, 2015. A central processing unit digitalizes the electrical signal using a 16-bit, Analog-to-Digital Converter, and the Arithmetic Unit inside the processor calculates the temperature value of the object, using Planck’s Radiation Law, where the value of ambient temperature and emissivity of the object is substituted, which results in a temperature reading on the infrared display. According to the website 'Sciencing.com', the following is the method which shows how infrared thermometers work: "Infrared light works like visible light--it can be focused, reflected or absorbed. The working principle of infrared thermometer. Infrared thermometer can be used in any medical or engineering application where using a thermometer probe is not possible or not allowed. Just by aiming your IR thermometer at the object you wish to measure, you can get all of the information you need without putting yourself at risk. Another important element of IR thermometers is the distance-to-spot ratio that they offer. Since there is heat being emitted by any object, an infrared thermometer can use the difference between the IR rays coming off of the object and the surrounding environment to determine the surface temperature of th… It is in the thermopile that the IR radiation is turned into heatÂ which is then turnedÂ toÂ electricity, which is then measured. This category only includes cookies that ensures basic functionalities and security features of the website. Durability. One of the great things about being able to check on temperature remotely is that you don't actually need to touch the object in question. The above phenomenon is scientifically known as Stefan-Boltzmann law, which states that “total radiation energy emitted by a body is proportional to the fourth power of the absolute temperature”. There are two main types. The thermopile absorbs the infrared radiation and turns it into heat. The reading will be generated in a manner of seconds, meaning an infrared thermometer is a quick way to gather a temperature reading in a number of different scenarios. When you warm yourself by standing close to a fire, the "warmth" is infrared energy that you are absorbing. Infrared Thermometer – Purpose, Types And Working Principle Posted on February 6, 2015 by Alex Banner There is a wide range of thermometers on the market, and each one is used for specific measuring application. Everything that has mass emits some amount of energy, and that energy is emitted in the form of heat. Copyright © Science Struck & Buzzle.com, Inc.