>Does anyone have any suggestions for a cheap thermocouple?
>
>I am looking for something that can be put into a small animal
>environment (cage or tank) so it has to be low voltage and visually
>unobtrusive; ideally something like the stick-on strain gauges that I
>can run DC voltage through, and stick on to some out-of-sight portion
>of the tank.
You might try looking for "thermistor" instead of "thermocouple".
I used to use the "outdoor" probe of a Radio Shack indoor/outdoor
thermometer in my aquarium. It was submerged more-or-less continuously
for several years with no problem. I don't have the aquarium any more,
but I still use that thermometer.
You can buy similar devices sold as "probes" for industrial applications,
though I haven't seen prices recently.
Mark S.
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