Author Topic: Hydrometer question  (Read 1255 times)

Offline gymrat

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Hydrometer question
« on: April 07, 2013, 01:32:33 PM »
Can hydrometers suddenly and without warning go wayyyy out of calibration. Today is the second time in a row I was expecting my beer to hit around 10.50 and it hit 1.066 instead. I can't believe my efficiency suddenly took that big of a jump.
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Offline duboman

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Hydrometer question
« Reply #1 on: April 07, 2013, 02:12:33 PM »
Sometimes the paper will slip:(
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Offline gymrat

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Re: Hydrometer question
« Reply #2 on: April 07, 2013, 03:05:38 PM »
It still reads 0 in plain water.
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Offline duboman

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Hydrometer question
« Reply #3 on: April 07, 2013, 03:38:25 PM »
Do you crush your own grain? If not, it's possible the supplier adjusted their mill and you got a better crush
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Offline gymrat

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Re: Hydrometer question
« Reply #4 on: April 07, 2013, 03:49:39 PM »
Yes I crush my own grains.
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Offline BrewArk

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Re: Hydrometer question
« Reply #5 on: April 07, 2013, 04:39:32 PM »
You'll never get 10.50
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Offline dls5492

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Re: Hydrometer question
« Reply #6 on: April 07, 2013, 04:56:40 PM »
Do you have access to a refractometer? I use both. If both readings are the same, then everything is cool. If one is off, then I know to calibrate. Hope this helps.
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Offline duboman

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Hydrometer question
« Reply #7 on: April 07, 2013, 05:11:10 PM »
Are you hitting your volumes into the primary. With the weather changing its possible your boil off rate is changing.

Do you take a pre boil gravity? Is that consistent? If so then the change is coming from the boil forward. If the pre boil is a more efficient reading then you're doing something better with your mash process.

Just throwing out ideas.....
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Offline klickitat jim

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Re: Hydrometer question
« Reply #8 on: April 07, 2013, 05:51:50 PM »
Temp of sample?

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Offline AmandaK

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Re: Hydrometer question
« Reply #9 on: April 08, 2013, 10:30:45 AM »
Temp of sample?

Unless it was much colder than 60, wouldn't a warmer temp result in a lower gravity reading than expected?
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Offline mmitchem

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Re: Hydrometer question
« Reply #10 on: April 08, 2013, 10:38:32 AM »
There is a temperature conversion chart in Ray Daniel's book Designing Great Beer
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Offline duboman

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Hydrometer question
« Reply #11 on: April 08, 2013, 10:42:17 AM »
There is a temperature conversion chart in Ray Daniel's book Designing Great Beer

Higher temps = lower readings
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