Hello Torleif,
My apologies for delayed response, do you still need help regarding the effect of emissivity in system calibration or any other TMP006 related questions?
Please note that emissivity cannot be changed by making software changes, it depends on the characteristics of the object, whose temperature you intend to measure. More information on desired emissivity can be found at section 3.1 of the following document: http://www.ti.com/lit/ug/sbou107/sbou107.pdf
The relationship between emissivity and object temperature is as shown in the attachment below:
This is same as the equations specified in section 5.1 of the document except that the above equations specify the individual terms in more detail.
I hope this helps and once again, sorry for the delay in getting back with you.
Best Regards,
Abhi Muppiri
Applications Engineer
MHR- Sensing Products
Texas Instruments
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