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Old 01-23-2011, 12:17 AM   #1
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Default Thermometer calibration

Just an fyi to new brewers, or ones that have been around for a few years. Just long enough for the equipment to start going a little haywire! I haven't been hitting my target OG's lately, and much of the problem was due to mashing temps I think. I followed the instructions in this article and the resulting batch was spot on for gravity.

http://www.ehow.com/how_114291_calib...ermometer.html

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Old 01-23-2011, 12:34 AM   #2
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Nice FYI. I had this issue a while back and fixed it as ehow says. Thanks for sharing!

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Old 01-23-2011, 01:44 AM   #3
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Unfortunately many thermos will not calibrate to both ends, just ask Blichmann. And even if they do that doesn't have anything to do with them being accurate @ 150F.

The real answer is to spend the cash for a quality thermo.

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Old 01-23-2011, 01:54 PM   #4
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I hope that post didn't come off as know-it-all, I had a few samples of the raspberry cider before bottling that batch O_O. I never even realized a thermometer could be calibrated, so I wanted to make sure other noobs were left in the dark.

I couldn't get my thermometer spot on at both ends either. I split the difference, and yes I have a cheap a$$ meat thermometer. I was weighing the options of a) running to LHBS to get one, stalling the brew an hour, or b) calibrating. My guess is that if the thermo is off 4 degrees at 32F, and 4 degrees at 212F, it should be right on at 122F and "pretty close" in the 150 range.

In the end, if you are going to use a crap thermometer, at least calibrate it!!! And hey, the proof is in the pudding as I hit my OG right on and got full conversion of starch to sugar (iodine test).

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Old 01-23-2011, 01:57 PM   #5
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Quote:
Originally Posted by esarkipato View Post
I had a few samples of the raspberry cider before bottling that batch O_O.
Which is also probably why I apparently posted this in 'electric brewing' section rather than 'sanitization/equipment'!!!!!
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