How Do Pyrometers and Infrared Thermometers Work?

We live in a world surrounded by heat, yet often, we can only sense it through touch. But what if there was a way to measure heat without physical contact? Enter IR pyrometers and infrared thermometers. These instruments have revolutionized industries by enabling precise temperature measurement in inaccessible or hazardous environments. In this article, we delve into the fascinating world of these devices, exploring how they work and the science behind their remarkable capabilities. 

Understanding Infared Radiation 

Infared radiation, also known as Infared light, is a type of electromagnetic radiation produced when atoms absorb and then release energy. There are different types of Infared radiation depending on the wavelength-near Infared, mid Infared and far Infared. It is possible to measure this radiation through heat since they are directly proportional. The hotter an object, the more radiation it emits but we cannot measure the heat without risking injury. That is why we utilize instruments like a IR pyrometer and Infared thermometer to do so.   

How Do Pyrometers Work? 

When an object is heated due to chemical reactions or other causes, it emits radiation. The hotter the object, the more radiation it releases.  

A pyrometer consists of three components-optical system, detector and signal processing unit. When focused on a object, the optical system detects the amount of radiation and focuses it on the detector. The detector then converts the radiation into an electic signal. Finally, the signal processing unit converts this electric signal into a temperature reading and displays a digital or analog output. 

There are different types of pyrometers. A high-temperature pyrometer is designed for extremely hot environments, while ratio and two-color pyrometers enhance accuracy by compensating for factors like emissivity and environmental conditions through advanced calculations. 

How Infared Thermometers Work? 

A Infared thermometer works in a similar way to a pyrometer since they use the exact same technologies to measure radiation.  In fact, both the terms are often used interchangeably, however, there are crucial differences between both the instruments.  

Infrared thermometers detect infrared radiation emitted by all objects, allowing for a wide temperature range. On the other hand, a pyrometer measures temperature based on visible light, limiting their use to high-temperature objects. Another difference between both the instruments is portability.  

Pyrometers and infrared thermometers are invaluable tools for measuring temperature without physical contact. By harnessing the power of infrared radiation, these devices offer precise and efficient temperature readings in a variety of applications. Understanding the underlying principles of how they work is essential for selecting the right instrument and ensuring accurate measurements.    

Looking for the perfect pyrometer or infrared thermometer for your application? Contact Mangalam Electricals. They offer both compact and high-performance pyrometers and infrared thermometers so whatever your need, you will easily find a solution. All their products come with standard interface options for seamless integration into process control systems.