Products > Test Equipment
What kind of thermometer should I get for reliable readings? (testing a fridge)
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tunk:
You could try to calibrate your thermometer:
https://www.google.no/search?q=thermometer+calibrate+ice+cube
BillyO:
Accuracy on DMM thermocouples are generally +/- (1%+1C).  That will most likely be better than any cheap fridge thermometer.
IanB:

--- Quote from: BillyO on July 30, 2023, 09:18:29 pm ---Accuracy on DMM thermocouples are generally +/- (1%+1C).  That will most likely be better than any cheap fridge thermometer.

--- End quote ---

The accuracy on the ThermoWorks model I linked above is quoted at ±0.5°C. I doubt a typical DMM thermocouple would do better than that.

In fact, I use such thermometers to check the accuracy of my thermocouples, since I find the variability of the various thermocouple and meter combinations in my possession can easily be 2-3 degrees.
BeBuLamar:

--- Quote from: BillyO on July 30, 2023, 09:18:29 pm ---Accuracy on DMM thermocouples are generally +/- (1%+1C).  That will most likely be better than any cheap fridge thermometer.

--- End quote ---
Thermoworks thermometers while not very expensive they are not cheap. They have some models that can read very quickly.
coppice:
Thermometer accuracy used to be pretty bad, even for some quite expensive ones. These days even a digital thermometer costing just a few dollars usually reads within 0.5C of another thermometer. They mostly compete on settling speed, rather than accuracy, these days. Even there, some cheap ones are getting pretty quick these days.
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