Coldbreak Brewing HERMS Giveaway!

HomeBrewSupply AMCYL Brew Kettle Giveaway!


Home Brew Forums > Home Brewing Beer > General Techniques > Two hydrometers, two different readings..
Reply
 
Thread Tools
Old 02-03-2013, 02:12 AM   #1
discokid2k
Feedback Score: 0 reviews
Recipes 
 
Join Date: May 2010
Location: san marcos, TX
Posts: 158
Likes Given: 3

Default Two hydrometers, two different readings..

I hav ebeen chasing an efficiency issue for awhile now and I have literally examined every aspect of my brew days. I finally bought a new hydrometer to see if that may help me find the missing points I am consistently losing somewhere in my brew schedule and would you look at that... Hydrometer on the left is the old one, on the right in the new one. The temp of the beer was 72*, both are calibrated at 60*. A solid 6, almost 7 point gap from new to old. The FG of the beer should be a 1.011 and we are off by one point according to the new hydrometer.

Has my problem, my white efficiency whale seriously been a simple $3 solution??? Tomorrow's brew day will answer this. Any thoughts? I was pretty surprised to see these results.


Click image for larger version

Name:	IMG_1391.jpg
Views:	582
Size:	35.9 KB
ID:	98420  
discokid2k is offline
 
Reply With Quote
Old 02-03-2013, 02:17 AM   #2
NivekD
Feedback Score: 0 reviews
Recipes 
 
Join Date: Dec 2012
Location: West Jordan, Utah
Posts: 665
Liked 100 Times on 83 Posts
Likes Given: 32

Default

You can check your hydrometer in water...it should read 1.


__________________
Bottled: Mexican Cerveza, Irish Stout, some Blue Moon clone, Pepper Ale, Full Hard Lemonade, Russian Imperial Stout, My first attempt at Mead (JAOM), Black Pearl Porter
Kegged: Blue Moon clone, Irish Red Ale
On Deck: Citra Hop Bomb (small batch) and Cream of Three Crops

_______________________________________________

Never underestimate the power of stupid people in large groups.
NivekD is offline
 
Reply With Quote
Old 02-03-2013, 09:51 AM   #3
Beer_Eugenics
Feedback Score: 0 reviews
Recipes 
 
Join Date: Jan 2012
Location: Laredo, TX
Posts: 259
Liked 62 Times on 23 Posts
Likes Given: 28

Default

It is not uncommon for the paper inside to come loose and move. But as stated use distilled or reverse osmosis water and it should read 1.000.
Beer_Eugenics is offline
 
Reply With Quote
Old 02-03-2013, 03:37 PM   #4
alestateyall
Feedback Score: 0 reviews
Recipes 
 
Join Date: Jun 2011
Posts: 736
Liked 89 Times on 58 Posts
Likes Given: 5

Default

After taking a reading with water you can add (if it reads low) or subtract (if it reads high) the measured error from all future readings. I have never had a hydrometer which read 0 for water. I always have to adjust. My current hydrometer reads 1.003 with water at 60F. So, I subtract 3 gravity points from all readings.
alestateyall is offline
 
Reply With Quote
Old 02-03-2013, 06:37 PM   #5
discokid2k
Feedback Score: 0 reviews
Recipes 
 
Join Date: May 2010
Location: san marcos, TX
Posts: 158
Likes Given: 3

Default

I have done the water reading on both. The one on the left is off by 4pts in distilled water. That does not account for the almost 7pt difference in my gravity reading here though. I have been correcting my readings by 4 but now I am not so sure that is a perfect adjustment.
discokid2k is offline
 
Reply With Quote
Old 02-04-2013, 12:54 AM   #6
Beer_Eugenics
Feedback Score: 0 reviews
Recipes 
 
Join Date: Jan 2012
Location: Laredo, TX
Posts: 259
Liked 62 Times on 23 Posts
Likes Given: 28

Default

Try a two-point calibration.
http://www.byo.com/stories/projects-...ter-techniques
Beer_Eugenics is offline
Hex Likes This 
Reply With Quote
Old 02-04-2013, 08:18 PM   #7
ajf
Senior Member
HBT_LIFETIMESUPPORTER.png
Feedback Score: 0 reviews
 
ajf's Avatar
Recipes 
 
Join Date: Oct 2005
Location: Long Island
Posts: 4,643
Liked 103 Times on 97 Posts
Likes Given: 39

Default

Quote:
Originally Posted by discokid2k View Post
I have done the water reading on both. The one on the left is off by 4pts in distilled water. That does not account for the almost 7pt difference in my gravity reading here though. I have been correcting my readings by 4 but now I am not so sure that is a perfect adjustment.
If the one on the left is off by 4 points in one direction, and the one on the right is off by 3 points in the other direction, that would explain the 7 points difference.

-a.
__________________
There are only 10 types of people in this world. Those that understand binary, and those that don't.
ajf is offline
 
Reply With Quote
Old 02-04-2013, 08:25 PM   #8
MichaelBrock
Feedback Score: 0 reviews
Recipes 
 
Join Date: Jun 2011
Location: Alachua, FL
Posts: 494
Liked 31 Times on 26 Posts
Likes Given: 40

Default

My hydrometer is high by .003 in RO water. Since I bought it, I have been adjusting by that .003 and having a real problem hitting my OG. I recently did the two point calibration as described in BYO and found that it is right on the money at 1.057. So, at least for my hydrometer, the calibration adjustment is not consistent across the range from 0 to typical wort sg.
MichaelBrock is offline
 
Reply With Quote
Old 02-05-2013, 07:04 PM   #9
discokid2k
Feedback Score: 0 reviews
Recipes 
 
Join Date: May 2010
Location: san marcos, TX
Posts: 158
Likes Given: 3

Default

Quote:
Originally Posted by ajf View Post
If the one on the left is off by 4 points in one direction, and the one on the right is off by 3 points in the other direction, that would explain the 7 points difference.

-a.
The right hydrometer is perfect in water. The one on the left is -.04 pts in distilled water. The 7 pts difference remains a mystery. My solution is to try the two point calibration that was suggessted and after that, I may toss the one on the left. I am going to do one full brew session before I throw anything away just to be 100% sure. Like I said in the original post, I have been running down the efficiency issue for awhile. I have tried everything except 1) a new hydrometer (obviously am on that one now) and 2) my own mill. But I think I found the issue, the hydrometer. The picture is very telling indeed.
discokid2k is offline
 
Reply With Quote
Old 02-05-2013, 07:05 PM   #10
discokid2k
Feedback Score: 0 reviews
Recipes 
 
Join Date: May 2010
Location: san marcos, TX
Posts: 158
Likes Given: 3

Default

Quote:
Originally Posted by Beer_Eugenics View Post
Going to try this one today! The hydrometer on the left is pretty old, a few years at least so I won't be hurting to lose it.


discokid2k is offline
 
Reply With Quote
Reply


Thread Tools


Similar Threads
Thread Thread Starter Forum Replies Last Post
Two Hydrometers - Two Readings FensterBos Beginners Beer Brewing Forum 1 09-16-2012 05:46 PM
brew day gravity readings and next day readings rustynails223 General Beer Discussion 3 03-05-2012 04:14 PM
hydrometers how many drunde77 Beginners Beer Brewing Forum 23 02-15-2012 01:17 AM
Hydrometers? We don't need no stinking hydrometers! - When a homebrew goes south... AlterCow Beginners Beer Brewing Forum 17 03-07-2010 10:42 PM


Forum Jump

Newest Threads

LATEST SPONSOR DEALS