PID as a thermometer - Home Brew Forums
Register Now For Free!

Home Brew Forums > Home Brewing Beer > Electric Brewing > PID as a thermometer

Reply
 
Thread Tools
Old 08-02-2012, 12:05 AM   #1
burdbrew
Recipes 
 
May 2009
Vermont
Posts: 103
Liked 17 Times on 11 Posts



I have a couple of extra Omega PID's kicking around (a friend of mine got out of beer making), and I was thinking it would be cool to have a PID read mash temperature while I mash. My thought is that I'd wire it up as I would a RIMS with an RTD but without the heating element set up. This seems like common sense to me, but I figured I would ask the community. This would work, right?

 
Reply With Quote
Old 08-02-2012, 12:09 AM   #2
passedpawn
Waste Allocation Load Lifter - Earth Class
HBT_ADMIN.png
 
passedpawn's Avatar
Recipes 
 
Apr 2009
☼ Clearwater, FL ☼
Posts: 26,540
Liked 7017 Times on 4154 Posts


Yes. it will work fine.
__________________
- Andrew

 
Reply With Quote
Old 08-02-2012, 12:36 AM   #3
ClaudiusB
Recipes 
 
Dec 2007
El Paso, Texas
Posts: 1,354
Liked 100 Times on 77 Posts


Quote:
Originally Posted by burdbrew View Post
I have a couple of extra Omega PID's kicking around (a friend of mine got out of beer making), and I was thinking it would be cool to have a PID read mash temperature while I mash. My thought is that I'd wire it up as I would a RIMS with an RTD but without the heating element set up. This seems like common sense to me, but I figured I would ask the community. This would work, right?
I do the same thing with all my temp controllers for a different reason.
My temp controllers are used as thermometers only and transmit the current temp to my brewing brain (PLC, programmable logic controller) which controls the brewing process.
In case of a PLC failure I can use each Temp controller (PID ) in local mode and continue brewing.



Cheers,
ClaudiusB

 
Reply With Quote
Old 08-02-2012, 01:03 AM   #4
Tinga
 
Tinga's Avatar
Recipes 
 
May 2010
MN
Posts: 1,122
Liked 39 Times on 30 Posts


works just fine but you can get a digital thermometer for $20 and that PID is worth more than that.

 
Reply With Quote
Old 08-02-2012, 01:04 AM   #5
wottaguy
HBT_LIFETIMESUPPORTER.png
 
wottaguy's Avatar
Recipes 
 
Mar 2009
, FL
Posts: 78
Liked 8 Times on 3 Posts


as long as you have them hanging around using them for that application would be fine. I use one of these to monitor mash temps directly and use their liquid proof sealed RTC probes and it works perfectly.

 
Reply With Quote
Old 08-05-2012, 05:51 PM   #6
kal
HBT_SUPPORTER.png
 
kal's Avatar
Recipes 
 
Nov 2006
Ottawa, Canada
Posts: 2,548
Liked 364 Times on 234 Posts


Quote:
Originally Posted by burdbrew View Post
I have a couple of extra Omega PID's kicking around (a friend of mine got out of beer making), and I was thinking it would be cool to have a PID read mash temperature while I mash. My thought is that I'd wire it up as I would a RIMS with an RTD but without the heating element set up. This seems like common sense to me, but I figured I would ask the community. This would work, right?
That's exactly what I do. My mash PID is completely passive and only tells me the mash temp:



Closeup:



I used the same PID as the other two for sake of consistency in usage/alarming/backup. It also looks nicer having 3 identical PIDs (in my humble opinion).

When I ramp up by changing the HLT temperature, I can see how far behind the mash temp is lagging and takes to catch up since I heat the mash using a HERMS coil in the HLT. For example, when I mashout and set the HLT to 168F, after the HLT hits 168F it can take a few minutes before the mash also reaches 168F. The bigger the grain bill, the longer it typically takes. Once the mash reaches 168F, it's time for me to start sparging. So I usually have an alarm set for 168F in the mash PID to let me know once 168F is reached.

Kal

 
Reply With Quote
Old 08-05-2012, 11:08 PM   #7
burdbrew
Recipes 
 
May 2009
Vermont
Posts: 103
Liked 17 Times on 11 Posts


Excellent information. Thank you all very much!

 
Reply With Quote
Reply
Thread Tools


Similar Threads
Thread Thread Starter Forum Replies Last Post
What probe/thermocouple/thermometer? and where to buy? stamandster Electric Brewing 4 06-07-2012 02:12 AM
Why use an analog thermometer? DFP51 Electric Brewing 5 01-13-2012 02:33 PM
Thermometer calibration esarkipato Electric Brewing 4 01-23-2011 02:57 PM


Forum Jump