The Great Bottle Opener Giveaway

Home Brew Forums > Home Brewing Beer > Brewing Software > Promash Errors in SG Calculations

Reply
 
LinkBack Thread Tools
Old 09-12-2011, 03:44 PM   #1
BrewMeThatBeer
Feedback Score: 0 reviews
Recipes 
 
Join Date: Jan 2011
Location: Richmond, VA
Posts: 16
Default Promash Errors in SG Calculations

I'm wondering if there's anyone else out there that has noticed significant errors in how ProMash calculates the SG. I just recently started creating my own recipes, so my knowledge of how much pppg each malt contributes was severely limited.

I brewed 5 gallons of brown ale last night and in my promash recipe I had only 5lbs of DME at 46 pppg and some steeping grains. However, promash predicted a SG of almost 1.057. After brewing I took a hydro sample and it was at 1.042 (had a bit more than 5 gallons, so near enough the 44-46 pppg standard.

I'm wondering why Promash was so far off in their SG prediction. I guess at least now I will have a session brown ale....:/

FYI, I put the same recipe in BeerSmith and got the correct OG prediction. Weird...

__________________
BrewMeThatBeer is offline
 
Reply With Quote Quick reply to this message
Old 09-15-2011, 06:06 PM   #2
BrewMeThatBeer
Feedback Score: 0 reviews
Recipes 
 
Join Date: Jan 2011
Location: Richmond, VA
Posts: 16
Default

No one else has had these issues? It's alright though, I'm switching over to BeerSmith 2, a much nicer interface.

__________________
BrewMeThatBeer is offline
 
Reply With Quote Quick reply to this message
Old 09-15-2011, 07:19 PM   #3
ClaudiusB
Feedback Score: 0 reviews
Recipes 
 
Join Date: Dec 2007
Location: El Paso, Texas
Posts: 1,256
Liked 57 Times on 49 Posts
Likes Given: 108

Default

Quote:
Originally Posted by BrewMeThatBeer View Post

I brewed 5 gallons of brown ale last night and in my promash recipe I had only 5lbs of DME at 46 pppg and some steeping grains. However, promash predicted a SG of almost 1.057. After brewing I took a hydro sample and it was at 1.042 (had a bit more than 5 gallons, so near enough the 44-46 pppg standard.
.
My Pro Mash predicted 1.046 for a 5 gallon batch, 1.042 for 5.5 gallon.
Check your system settings.


Cheers,
ClaudiusB
ClaudiusB is offline
 
Reply With Quote Quick reply to this message
Old 09-15-2011, 07:48 PM   #4
michaeltrego
Feedback Score: 0 reviews
Recipes 
 
Join Date: Sep 2009
Location: Amherst, NH
Posts: 429
Liked 14 Times on 13 Posts
Likes Given: 3

Default

If you entered your steeping grains in the recipe along with the DME, then the SG prediction will increase accordingly.

__________________
michaeltrego is offline
 
Reply With Quote Quick reply to this message
Old 10-01-2011, 06:47 PM   #5
kappclark
Feedback Score: 0 reviews
 
kappclark's Avatar
Recipes 
 
Join Date: Sep 2006
Location: Southern VT
Posts: 1,608
Liked 5 Times on 5 Posts
Likes Given: 4

Default

I use promash, and it has been telling me my eff is 57%...OK. Las 4 batches have been coming in arount that number.

So I asked promash to scale up the ingredients for the Ed Wort's HPA recipe, assuming 57% mash eff. (I called it HPA 57)..Pro Mash predicted 1052..My gravity was 1054 - it was like magic.

I can live with 57% eff, as long as my results are as consistent with what Pro Mash reports. Glad I am not trying to do this scaling manually.

I wish there were updates to Promash..

__________________

Bill Clark
Windham, VT

kappclark 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
2 (minor?) Brewtarget errors with manual install jdholman Brewing Software 1 05-03-2011 06:03 PM
BeerSmith IBU calculations JoePat Brewing Software 2 10-13-2009 07:17 PM
Promash Far wrong! for IBU calculations scinerd3000 Brewing Software 7 05-20-2009 11:52 AM
ProMash Q AGBrewer Brewing Software 10 06-25-2007 06:57 PM
Promash McKBrew Brewing Software 1 05-17-2007 07:06 PM