> Yes, not very good, for this kind of biological application, is it?
> And what warm-up time do they specify to achieve this level of
> accuracy? And what thermal gradients can be expected outside this
> tub of relatively constant temperature liquid?  What kind of
> errors in any panel jacks etc. that might be involved? Errors
> due to the compensation leadwire not being quite the same alloy?
> There is an inaccuracy due to the probe as well, typically
> special limits of error alloys are used, but still the errors
> are significant. A decent RTD system would be around five times
> better accuracy at a similar price, and have completely
> interchangeable probes. Which is why they are used
> almost exclusively in industry for this sort of thing.

Couldn't a little careful calibration fix that?

Well, anyways, what do you think of the LM35 solution that someone else
offered?  It would require the TIG welded tube that I was saying would be
expensive, but other than that, I think I remember it being a relatively
good sensor, and with a thermal epoxy bond to the stainless steel tube, it
should measure temperature fairly well, I think.

--Brendan

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