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Using TPM102 to sense ambient temp

Arif Quronfleh
Prodigy 10 points
Other Parts Discussed in Thread: TMP432, TMP451

We're using the TPM102 in a new product to measure ambient temp. 

The product will have a plastic enclosure and I'm wondering what the best way to get a good response to outside the enclosure temp changes. 

We thought of attaching the temp IC to an AL cylinder (using thermal conductive goop) which will interface with the outside world.  

We're trying to achieve a quick response (as quick as possible) by reducing the effect of the enclosure which will sealed. That's why the small AL Cylinder. 

Feedback is greatly appreciated. 

AQ 

  • 0
    TI__Expert 7945 points

    Hello AQ,

    Using a thermal conductive goop for measurng outside plastic enclosure temperature changes may not be the right approach, especially if you are trying to achieve a quick response. In fact since you are more interested measuring temperature external to the plastic enclosing rather than inside the enclosing - I advise you to look into our remote channel temperature sensors. This way all you need is a diode/BJT mounted external to the plastic case while its pins are connected to the remote junction temperature sensor inside the plastic casing. For more reliability you could also use multiple sensors connected to temperature sensor channels. 

    Here are a few well known devices i  our remote sensing portfolio:

    http://www.ti.com/product/tmp432

    http://www.ti.com/product/tmp451

    Let me know if have any followup questions or concerns...

    Regards,

    Abhi