Am 08.10.2011 00:35, schrieb Jed Rothwell:

I think this is the meter that Lewan says had a 0.5°C bias. I cannot imagine why! That's strange. These things are highly reliable and internally consistent.
If they are well maintained.

A thermocouple delivers only microvolts that must be amplified and linearized. Lewan also mentioned strange instability. If this is the same meter, it is easily explained: Dirty and contaminated and bended contacts. For example skin-fat can generate electrochemical voltages on a bad contact.


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