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TMP006 Question: About glass & human body

edward fu
Prodigy 20 points
Other Parts Discussed in Thread: TMP006

Hello

I'm using TMP006 to read temperature of human body, but our product should be water-proof.

So I'll cover hole ( field of view ) with glass, is it OK?

Should I brush printing ink on the glass to prevent other light?

Thanks!

Edward

 

  • 0
    TI__Expert 7945 points

    Hello Edward,

    Thank you for checking with us before you proceed with your experiment. TMP006 is sensitive for IR radiation ranging between 4um and 8um. No, you cannot cover the Field of view with a regular glass (also called a Silica glass) since it  is effectively opaque for larger than 4.0um. You can find more information regarding this in a paper I found: http://www.seas.ucla.edu/~pilon/Publications/AO2007-1.pdf

    Its important that you make sure you use materials that are transparent to IR radiation. Suitable materials include:

    –Polypropylene/polyethylene
    –Poly IR blend (ex. Poly IR 2 from Fresnel Tech)
    –IR glass (ex. IG2 glass from Schott Glass)
    –Sapphire (Al2O3)
    –Calcium Floride (CaF2)
    –Germanium (Ge)
    –Zinc Selenide (ZnSe

    Please keep in mind that by brushing or using materials that are opaque to IR you will be measuring the temperature of the cover material rather than human skin. 

    Best Regards,

    Abhi

  • 0 in reply to Abhishek Muppiri
    Prodigy 20 points

    Hi Abhi

    Thanks!

    One more quetion, will  hair or feather  impact on temp measure? You know, some one has lot of hair. I'm not sure it will influence accuracy?

    Best Regards

    Edward

  • 0 in reply to edward fu
    TI__Expert 7945 points

    Hello Edward,

    Yes, I believe hair would influence the temperature results. Even though hair has high emissivity its temperature will be close to Ambient temperature unlike that of skin which regulates body temperature. Judging by this I believe TMP006 results will be affected based on the amount of hair in its filed of view. However I do not have results to provide you a quantitative answer. 

    It would be great if you could share the results of your experiment w/ and w/o skin in the future.

    Thanks & regards,

    Abhi