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Home Brew Forums > Home Brewing Beer > Equipment/Sanitation > Digital thermometer accuracy
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Old 03-01-2007, 02:38 AM   #11
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A quick test would be to put it into just boiling water like everybody has suggested and then get a glass of ice water and test it there. If you read 212 and 32 +\- a degree or two than you can be pretty comfrotable about it's accuracy through that span.

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Old 03-01-2007, 12:42 PM   #12
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Quote:
Originally Posted by pjj2ba
I have two thermometers. One is designed for frothing of milk so it has a large easy to read scale conveniently centered around mash/sparge temperatures. I really don't need the scale to go up to 400 F. It can be adjusted/calibrated with a wrench. I finally bought this digital model specifically because it gave a rated accuracy (+/- 2F), which most thermometers don't, and it is easy to calibrate.
http://www.amazon.com/Taylor-9842-Pr.../dp/B00009WE45

I always felt uneasy buying a thermometer that didn't give you any indication of how accurate it is.

That's where a calibration thermometer comes in if you want to know how accurate your other thermometer(s) are.
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Old 03-01-2007, 12:50 PM   #13
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Quote:
Originally Posted by Tman
A quick test would be to put it into just boiling water like everybody has suggested and then get a glass of ice water and test it there. If you read 212 and 32 +\- a degree or two than you can be pretty comfrotable about it's accuracy through that span.
This guy either didn't read the entire post or does not believe altitude plays a role in which water boils.

Disregard his post unless you live at or close to sea level
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Old 04-02-2007, 01:07 AM   #14
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Default anyone recalibrate this digital thermo?

I bought this digital thermo from Midwest supplies
http://www.midwestsupplies.com/produ...px?ProdID=5501

and I found tonight that it was off.
My probe thermo read 76 deg on a wort sample and the digital read 83 deg.

Can these be recalibrated? I thought I read somewhere about drying them
out or something like that.

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Old 04-02-2007, 01:13 AM   #15
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Quote:
Originally Posted by pjj2ba
I have two thermometers. One is designed for frothing of milk so it has a large easy to read scale conveniently centered around mash/sparge temperatures. I really don't need the scale to go up to 400 F. It can be adjusted/calibrated with a wrench. I finally bought this digital model specifically because it gave a rated accuracy (+/- 2F), which most thermometers don't, and it is easy to calibrate.
http://www.amazon.com/Taylor-9842-Pr.../dp/B00009WE45

I always felt uneasy buying a thermometer that didn't give you any indication of how accurate it is.
Does it float? That would be sweet.
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Old 04-02-2007, 01:35 AM   #16
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I just bought a couple digi thermo's and tested them with my tap water. My previous thermo read 56 degrees and the two I just tried read no more than .5 degree off. I should add my previous thermo was the 40 dollar waterproof kind from Professionalequipment.com so it was about as accurate as you can expect. I think people worry too much about this stuff sometimes especially since the temps can vary a couple degrees in your mash depending on where you take the reading.


Dan

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Old 04-02-2007, 02:01 AM   #17
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My digitals that I used through the wall on my tuns are rated at +/- 2 degrees... better than I can read on a dial therm.

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