Promash Errors in SG Calculations - Home Brew Forums

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

Reply
 
Thread Tools
Old 09-12-2011, 03:44 PM   #1
BrewMeThatBeer
Recipes 
 
Jan 2011
Richmond, VA
Posts: 16


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...

 
Reply With Quote
Old 09-15-2011, 06:06 PM   #2
BrewMeThatBeer
Recipes 
 
Jan 2011
Richmond, VA
Posts: 16

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

 
Reply With Quote
Old 09-15-2011, 07:19 PM   #3
ClaudiusB
Recipes 
 
Dec 2007
El Paso, Texas
Posts: 1,350
Liked 99 Times on 76 Posts


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

 
Reply With Quote
Old 09-15-2011, 07:48 PM   #4
michaeltrego
Recipes 
 
Sep 2009
Amherst, NH
Posts: 391
Liked 19 Times on 17 Posts


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

 
Reply With Quote
Old 10-01-2011, 06:47 PM   #5
kappclark
 
kappclark's Avatar
Recipes 
 
Sep 2006
Southern VT
Posts: 1,590
Liked 6 Times on 6 Posts


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

 
Reply With Quote


Reply
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


Forum Jump