Whenever you read the phrase, “The Best Infrared Thermometers“. A definition will trigger inside your head, “A Digital thermometer that is using Infrared sensor to measure the temperatures correctly”. I know this definition is okay for a layman but not for technical.

If I explain the technology, maybe you will be shocked. Because the Infrared thermometers that you were seeing or using are not based on an Infrared (IR) sensor.

These are only infrared emission capturing devices, which calculates the temperature of the skin surface or an object, reference to the emissivity.

now you are feeling cheated and a lot of questions bombarding inside your head. But hold on, I’ll explain them one by one…🤔

Well, we all have a wrong assumption, IR thermometers are based on an infrared sensor that collects temperature and displays.

And this is not the truth.

The truth is, IR thermometers, also called Infrared or contactless thermometers are based on a passive sensor which is called: “Thermopile”

A lot of companies are selling these thermometers, even they don’t know the actual working and product technology and what sensors are being used to make these devices.

If you ask them, they will tell you, this is an IR thermometer and works on an infrared sensor 😆😆. But don’t worry I’ll be explaining to you each and everything about the device.

Some of you may be thinking if companies don’t know then, how you are going to tell me?🤔🙄

Because I’m an engineer and worked very closely in the development of these devices with some Indian as well as foreign companies. And based on that knowledge I can tell you deeper than you know before.

An infrared thermometer works on the passive infrared radiation that is emitted by an object or human skin surface.

Note: IR thermometers are only for reference purposes only they should not be used for medical use in any means. Because they collect the temperature of your skin surface not the core of the body. And there would be differences between actual and IR showed temperatures.

I assuming that you are familiar with the terms emissivity and black body if you have done your schooling seriously.😁

Here are 3 points:

1. Every object or body store energy
2. Stored energy also radiates in the form of infrared
3. Everything has an emissivity point

The same concept from your 10th standard book is applied here. following is the working of your IR based thermometer:

1. A thermopile sensor captures the infrared radiation of your test object
2. This radiation fully depends upon the emissivity of the object
3. According to the emissivity the sensor sends data to ADC
4. this ADC converts temperature into the electrical form
5. Which is processed by the computational unit
6. and results are displayed on the screen.

These thermometers can only show you the reference temperature not the actual. For that, you need a mercury one.

I hope your doubts are clear now. And here are some recommended best Infrared thermometers that you can count upon.

I hope you have checked all the above-listed models and made a mind for buying one. The priority of the number shows, the selection level for the device. No.1 is More perfect and users have given great feedback whereas no.3 has less priority.

If you still confused about buying, feel free to contact me on Facebook.

Enjoy the day!

cheers