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Digital thermometer with a penetration thermocouple probe ? Test for sous vide purpose


By Sous Vide Cooking (Visit website)




A month ago I decided to purchase a digital thermomether with a penetration probe. I had a chock when looking at prices  on internet. Price for such thermometer is usually in the range from EUR 200 to EUR 400.

Then, when I saw the Thermowoks onlineshop proposing a similarly equipment for approx. USD 110 incl. shipping to Europe…I decided very fast to make a try.


The overall price was :



MTC, Mini Handheld Thermocouple Meter, Type K : USD 43.
K Type Fast Response Meat Needle Probe Fitted into MPK ANSI Plug : USD 30.
Coiled Lead Type K Extension Wire 2 Meter Plug to Socket Ansi Colour Yellow (627-741): USD 19.
Shipping cost to Europe: approx. USD 20.

Total: USD 110.


My worry was to determine how good this thermometer is. Was it well calibrated? I asked a friend of mine if he could find a precision thermometer in order to compare its precision to the Thermoworks one.  Thanks to Bertrand.L I could find someone borrowing me the GMH-3710. He told me he purchased it here for approx?  EUR 220 excl. VAT and shipping costs. This is 3 times the price I purchased mine!


I red on internet that temperature accuracy depends of the temperature. In other words, the higher the temperature is,  the bigger the risk of inaccuracy could appear.


For the purpose of my test I tried with both the thermomethers to assess the temperature of an apple, a glass of water containeing water at 46°C and 79°C.


Above a picture of the GMH-3710


My test with an apple that was laying around in kitchen was excellent. The difference in temperature between the 2 thermometers was in the range from 0.1°C to 0.2°C only. Therefore the inside temperature of the apple was approx. 21.5°C.



The test with the 46°C water was also good with a difference of maximum 0.3°C.




I also made the test with a glass of water at 79°C. The difference of temperature was in the range from 0.3°C to 0.4°C.


To sum up : The Thermoworks digital thermometer seems to work very well and is price competitive. I am in a hurry to try it while cooking sous vide!


Jean-François



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