Spike Brewing 12.5 Conical Fermenter Giveaway!

Home Brew Forums > Home Brewing Beer > Equipment/Sanitation > Infrared Thermometer

Reply
 
LinkBack Thread Tools
Old 08-13-2010, 12:06 AM   #1
muscleshoalsbrewer
Feedback Score: 0 reviews
Recipes 
 
Join Date: Apr 2008
Location: Niceville Florida
Posts: 96
Default Infrared Thermometer

I have a "fermometer" on my better bottle but I have been also using a infrared point and shoot type laser thermometer. It is giving me a reading 2 degrees lower than the stick on fermometer (stick on says 74 laser says 72) will there be a noticable difference in the taste if my temp for secondary was at 74?

__________________
muscleshoalsbrewer is offline
 
Reply With Quote Quick reply to this message
Old 08-13-2010, 12:18 AM   #2
Displaced MassHole
Feedback Score: 0 reviews
Recipes 
 
Join Date: May 2008
Location: San Diego
Posts: 1,154
Liked 7 Times on 6 Posts

Default

Both 72 and 74 are on the high side for fermentation.

__________________
Worthless Brewing Co.
The name says it all
Displaced MassHole is offline
 
Reply With Quote Quick reply to this message
Old 08-13-2010, 12:26 AM   #3
Captain_Bigelow
Feedback Score: 0 reviews
Recipes 
 
Join Date: May 2009
Location: Los Angeles
Posts: 834
Liked 8 Times on 8 Posts

Default

What kind of beer are you brewing and what yeast did you use?

__________________
Captain_Bigelow is offline
 
Reply With Quote Quick reply to this message
Old 08-13-2010, 12:28 AM   #4
Gregscsu
Feedback Score: 0 reviews
Recipes 
 
Join Date: Apr 2010
Location: St. Paul
Posts: 448
Liked 12 Times on 11 Posts

Default

Quote:
Originally Posted by muscleshoalsbrewer View Post
I have a "fermometer" on my better bottle but I have been also using a infrared point and shoot type laser thermometer. It is giving me a reading 2 degrees lower than the stick on fermometer (stick on says 74 laser says 72) will there be a noticable difference in the taste if my temp for secondary was at 74?
For secondary with an ale that should be fine.
__________________
Primary: Dry Dock Breakwater Pale Ale, Raspberry Wheat, Cream Ale, Rye IPA,
Secondary: Brandy Oak Irish Red
Keg: Belgian Black & Mild, Golden Dragon 10.9%, American Brown Ale, Devil's Sin Amber IPA, Boundry Waters Pale Ale
Gregscsu is offline
 
Reply With Quote Quick reply to this message
Old 08-13-2010, 02:18 AM   #5
kpr121
Feedback Score: 0 reviews
Recipes 
 
Join Date: Jul 2009
Location: Pittsburgh, PA
Posts: 2,776
Liked 61 Times on 58 Posts
Likes Given: 65

Default

Just a side note about the infrared thermometers. Harbor Freight has recently had the Cen-Tech Infrared Laser Thermometer for like 27 bucks. i picked it up and absolutely love using it with my brews. Its damn accurate.

__________________
ADD ME on GOOGLE+
Primary: Nugget Nectar 2014
Kegged:

Bottled:
Bulk Aging:
Up Next: ???? Suggestions?
kpr121 is offline
 
Reply With Quote Quick reply to this message
Old 08-13-2010, 03:12 AM   #6
Catt22
Feedback Score: 0 reviews
Recipes 
 
Join Date: Jan 2009
Posts: 4,998
Liked 57 Times on 55 Posts
Likes Given: 51

Default

The tolerance for most of the commonly available infra-red thermometers that I have seen is only +/- 2% IIRC. I think they are probably somewhat closer than that in actual use, but generally they aren't all that accurate.

Here's a spec sheet from Omega listing some of their models and the accuracies:

http://www.omega.com/temperature/pdf/SEL_GUIDE_IR.pdf

Even the relatively expensive ones aren't all that accurate. I have a moderately priced one and it's handy for quick checks of the fermenters and the output of my chiller, but not of much use for anything else brewing related. Steam and vapor coming off of the mash will interfere with the readings and they only read surface temperature. Reflective surfaces can also interfere with them.

__________________
Catt22 is offline
 
Reply With Quote Quick reply to this message
Old 08-13-2010, 03:17 AM   #7
passedpawn
Waste Allocation Load Lifter - Earth Class
HBT_MODERATOR.png
Feedback Score: 0 reviews
 
passedpawn's Avatar
Recipes 
 
Join Date: Apr 2009
Location: ☼ Clearwater, FL ☼
Posts: 18,471
Liked 3153 Times on 1968 Posts
Likes Given: 2666

Default

Quote:
Originally Posted by Catt22 View Post
The tolerance for most of the commonly available infra-red thermometers that I have seen is only +/- 2% IIRC. I think they are probably somewhat closer than that in actual use, but generally they aren't all that accurate.

Here's a spec sheet from Omega listing some of their models and the accuracies:

http://www.omega.com/temperature/pdf/SEL_GUIDE_IR.pdf

Even the relatively expensive ones aren't all that accurate. I have a moderately priced one and it's handy for quick checks of the fermenters and the output of my chiller, but not of much use for anything else brewing related. Steam and vapor coming off of the mash will interfere with the readings and they only read surface temperature. Reflective surfaces can also interfere with them.
I love my IR therm. I trust it over the fermometer!
__________________
What Would Vermeer Paint?
passedpawn is offline
 
Reply With Quote Quick reply to this message
Old 08-13-2010, 03:41 AM   #8
Catt22
Feedback Score: 0 reviews
Recipes 
 
Join Date: Jan 2009
Posts: 4,998
Liked 57 Times on 55 Posts
Likes Given: 51

Default

Quote:
Originally Posted by passedpawn View Post
I love my IR therm. I trust it over the fermometer!
They have about the same degree of accuracy and either would certainly be close enough for checking fermenters, but as I mentioned, IMO they have very limited other brewing related uses. It is a neat tool to have around and my cat likes to chase the red laser dot. He's easily amused. Me, not so much.
__________________
Catt22 is offline
 
Reply With Quote Quick reply to this message
Old 08-13-2010, 05:04 PM   #9
kpr121
Feedback Score: 0 reviews
Recipes 
 
Join Date: Jul 2009
Location: Pittsburgh, PA
Posts: 2,776
Liked 61 Times on 58 Posts
Likes Given: 65

Default

I havent tried AG yet so I will take your word for it as far as mashing and such goes.

I like using it to get a feel for how close to steeping/boiling temp the wort is. It seems like theres always a hundred different things I need to be doing (brewing and non-brewing related) as soon as I get the pot on the burner, and shooting the wort quickly with the gun seems simple to get a good gauge of temp.

And I almost drained the battery in the two weeks of fermenting, especially since I just changed my swamp cooler setup and I wanted to test it (every hour it seemed for the first couple days!)

Maybe I just really am the techno-geek that my wife always says I am.

__________________
ADD ME on GOOGLE+
Primary: Nugget Nectar 2014
Kegged:

Bottled:
Bulk Aging:
Up Next: ???? Suggestions?
kpr121 is offline
 
Reply With Quote Quick reply to this message
Old 08-14-2010, 01:59 PM   #10
muscleshoalsbrewer
Feedback Score: 0 reviews
Recipes 
 
Join Date: Apr 2008
Location: Niceville Florida
Posts: 96
Default

Quote:
Originally Posted by Captain_Bigelow View Post
What kind of beer are you brewing and what yeast did you use?
brewing a stone DB and pitched a WLP051 ... I was thinking that the gradual warmingto 72 degrees from my 67-68 degree, 18 day fermentation,that I cuold coax the yeast into cleaning up after themsleves a little.

Also, this has been in secondary for a little over a month. brewed it 7/3/10.
will I need to pitch more yeast at botteling? or will there be enough live cells left to do the job?
__________________
muscleshoalsbrewer is offline
 
Reply With Quote Quick reply to this message
Reply


Quick Reply
Message:
Options
Thread Tools


Similar Threads
Thread Thread Starter Forum Replies Last Post
infrared thermometer Ceedubya Equipment/Sanitation 12 03-02-2012 02:05 AM
Pocket Infrared Thermometer Vtbrew Equipment/Sanitation 4 02-24-2010 05:21 PM
infrared thermometer? rogue22 Equipment/Sanitation 2 02-11-2009 07:42 PM
New Gadget - Infrared Thermometer EdWort Equipment/Sanitation 8 05-11-2008 12:01 AM
Infrared Thermometer Gun? digdan Equipment/Sanitation 12 02-27-2006 05:15 PM