How Emissivity Can Impact Temperature Measurement with an Infrared Camera
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- เผยแพร่เมื่อ 27 ส.ค. 2024
- In this video, we discuss how emissivity affects temperature measurements with infrared cameras.
Understanding emissivity and its impact on temperature measurements is crucial for obtaining accurate temperature readings with infrared cameras, which is essential in various fields such as manufacturing, automotive, and medical industries.
I’ve just had a young worker burn his wrist on a vacuum pump discharge line (shiny steel pipe bend) which read 47C. Touch probe read 77C. I think we don’t measure properly because of the emissivity being way less than 1, as per this excellent explanation by the author. My sincere thanks.
Exactly. The emissivity of those shiny metals fall below 0.3 to 0.1 .
best explanation I can find on youtube right now. thank you for the video!
Glad it was helpful!
Very good science, can you speed up the next video?
Mistake at 1:14 .
Love your lessons
Hi @fortuneasuoma7073! Thanks for pointing that out! Love the attention to detail. The '>' sign should be a '
Great explaination...
Great video information ❤👍
We are glad you found the video useful! We appreciate the shout out!
Great explanation, thank you❤
You’re welcome 😊
Thanks for your video, it the best explanation I've seen! But I found a mistaken display at 01:15, ε should be
Thanks guys for pointing that out! We'll make sure to fix that!
Great explanation, I try to find the next video but i didn't find. I would like to know how to determine the emissivity of the target.
Hi! This one is in the works! Stay tuned!
Could you elaborate on the caluclation at 3:39? If the target reflects 25% of the nearby fire @ 500, would not the temperature be more than 80? Or am I missing something?
很好的科学，你能加快下一个视频的速度吗？
Will the IR flashlight interfere with the IR camera?
Hi Kercig! That depends on the wavelength of the flashlight you are using. Most IR flashlights are near IR, or in the range of ~800nm wavelength. That is barely outside of the visible light range. These would not be visible in the thermal camera image at all. Unless, the power from the flashlight is able to warm up the surface. Great question!
What would be the optimal distance of the camera to said target in relation to FOV?
Hi Nelo! Thanks for your comment. We will address your question in our upcoming video. Stay tuned!
It is based on the D:R ratio of the camera. A D:R ratio of 12:1 means you would measure a circle of 1 cm diameter when the camera is at a distance of 12 cm from the target.
What data from the infrared image can help to find pixel-wise tem, temperature values ?.
Hi! There are cameras referred to as "streaming" thermal cameras. They have temperature calibrated, pixel by pixek values