thermometer verification frequency

[[Fl...]]

Hello everyone,

I have a small question: how often do you check your temperature recorders?
I have just acquired one (customers are boring with that), and I'm wonder to calibrate it once every year or every 2 years...
Is that enough ? Can the thermometer go wrong ?

Thanks for your help !

[[Ka...]]

Hi Florent,

We calibrate our room temperatur sensors every two Years.
Of course, the credibility of the determined temperature depends on the actual sensor and also a little bit on the manufacturer of the thermometer.
Once a calibration has been performed, the displayed result can already be trusted.
Only the long-term stability is definitely a problem. A tolerance of +/- 0.5°C should be aimed for. Cheap thermometers may master the calibration, but can drift strongly after a few months. A good example is the popular sensor DS18B20 of which there are a lot of fakes used.

[[Fl...]]

Hi Karsten,

Thanks a lot for your help. 2 years seems to be a good average frequency.