High accuracy infrared temperature sensor

Hi guys! I'm currently working on a project that requires an infrared temperature sensor with an accuracy of 0.1°C operating in a range between -5°C and 20°C. Actually, we didn't decide yet if we are going to proceed with this approach, but ideally, we want to use a non-contact sensor rather than a contact sensor.

If you guys know a sensor that fits these features or if you know where I can do my research to find one, I would appreciate your recommendations.

https://www.google.com/search?q=0.1+C+noncontact+thermometer

Why not use google, I entered "0.1% IR temperature sensor" and got over 2 million hits.

Depending on what you are planning to measure, IR sensors are partially dependent on the emissivity of the device being measured. Color, surface texture will both change the IR emissions and therefore the IR measurement. I've never used IR as a raw component but if you really require the 0.1°C ACCURACY (as opposed to resolution) you need to investigate the IR approach further.

Another challenge will be to verify the IR temperature is really accurate. You will need another sensor with greater accuracy than the 0.1°C

2 Likes

If you found it so easily, you can tell me which device has these features. I've only found devices with 0.5°C of accuracy at a specific range of temperatures.

The device to verify the accuracy of it doesn't need to be infrared, so that's not a problem. The real problem for me now is to find an accurate IR sensor. The most accurate I found is the MLX90614, which doesn't fit with my project.

I don't know what you meant by posting this, but it didn't help at all :frowning:

The range of temperatures of my project is far below the range of temperature of the thermometer sensor gun.

I wouldn't be asking this here if didn't search it on google before

Then why are you asking on the Arduino forum, which is about Arduino as a hobby and teaching/learning tool?

What you want is certainly available from suppliers of professional measurement instruments. Expect to pay a high price.

If you are serious about this project, do not waste either your or our time on this forum.

Perhaps I don't understand your needs. The MLX90614 is not accurate to 0.1°C. Its accuracy is stated as:

Melexis spec: High accuracy of 0.5°C in a wide temperature range (0°C…+50°C for both Ta and To)

However it has a RESOLUTION of 0.02°C

The device to verify the accuracy of it doesn't need to be infrared, so that's not a problem.

To get a contact measurement with an accuracy of < 0.1 °C is not as easy as you seem to suggest.

It might help if you could state that you actually require an ACCURACY of 0.1 °C and not a RESOLUTION of 0.1°C

John

Your information is very vague, it is like searching for a house that is red but not bothering to tell us you wanted red. I also do not understand why you are on the Arduino forum, you give us no information and want the world. I changed the search term from percent to C and guess what no problem finding them. I do not have the time or energy to go through all the different data sheets etc to find you something when I do not even know the "color"!

In searching for 0.1C the first hit got was mouser: [

+/- 0.1 C Newest Board Mount Temperature Sensors – Mouser

](https://www.mouser.com/Sensors/Temperature-Sensors/Board-Mount-Temperature-Sensors/Newest-Products/_/N-7gz7q?P=1yzognn) I found the ).1% and the 0.1C what next 0.1F

Curious, did your search lead to a 0.1°C accurate infrared sensor?

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