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Unidentified Thermopile






Hi grenadier, definitely looks like an Ophir. I see that the serial number tag has been removed; it could be a couple of different models.
It may be a 20c-a-1-y, which is what most members use. Below is a photo of the insides of one of my 20c-a-1-y sensors, it may help you identify which model you have.
There are a few threads showing these with the covers removed, and they all seem to vary a little as to the exact layout of the components.

Here is a good thread showing a 20c, see post #20 for photo of componants.


d8b81702-a092-4b4f-b183-f1111a9e8b4e_zps1ei5bttk.jpg
 
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