Doubleplugga
Well-Known Member
- Joined
- 13/10/09
- Messages
- 267
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That looks swweet!! I love having my brewery in the house but some days I do miss brewing outside.Doubleplugga said:Second brew underway. A bit of a cupboard clean out pale ale. Gava, I love how your rig is set up inside.image.jpg
When you changed your probes over, did you retrain/configure you PID controller for that setup?mb-squared said:Hey Gav, my MT runs about 1 degree behind my HLT. I keep my HLT filled to the brim during my mash, even though I don't need that much water for sparging. The reason? The more heat mass, the more stable my temps.
When I first started with this rig, I did what I think you are suggesting: that is, let the temp probe on my MT govern the heat on my HLT. I thought I was really clever to think of this. But then the first time I did a temp ramp, I realized why I shouldn't do this. Like I said, when holding steady temp, the MT runs about 1 degree behind my HLT. But when ramping, the MT can fall several degrees behind the HLT during the ramp. If you have your temp probe on your MT, then you'll run the temp of your HLT well beyond where you want to be. Once your temp probe says you've reached your desired temp, your controller will turn off the heat to the HLT but the temp in the MT will just keep climbing. I overshot my desired temp by several degrees doing this.
So, the upshot is, whenever I have a temp ramp programmed in to my brew day, I make sure to keep the temp probe on my HLT.
BTW, doubleplugga, that is one very sweet setup. gawd, between you and gava, I'm feeling very inadequate
Oh well, I keep telling myself that I've been able to achieve what all you kal-clone guys have for a lot less. But I do wish I had all that shiny blingyness that you guys have
On my rig, I have a two thermowells, one on the ballvalve out of the HLT and one on the MT. I only have one probe and so "switching probes" simply means moving it from one thermowell to the other. As far as my controller (BCS-460) is concerned, it is just reading the HLT temp. Because of the temp differential mentioned above, I (like doubleplugga) set my HLT temp to be 1 degree higher than the intended temp of my MT.gava said:When you changed your probes over, did you retrain/configure you PID controller for that setup?
I dunno, seems to be standing up ok by itselfmb-squared said:a stand to get that BK off the floor?
You could always insulate those lines
My 'slow mashing' comes from my old system which had larger ID for the HERMS and the ball valve, I had to restrict the flow to get a better heat exchange.. the term slow mash came from that not the best description i know .. My new system behaves different and I'm doing test with it being restricted and full open. When the ball valve is restricted I can feel I do get a better heat exchange but the ramp rate isn't great. I think I'll adjust how I use the system like yours with the MLT fully open.mb-squared said:On my rig, I have a two thermowells, one on the ballvalve out of the HLT and one on the MT. I only have one probe and so "switching probes" simply means moving it from one thermowell to the other. As far as my controller (BCS-460) is concerned, it is just reading the HLT temp. Because of the temp differential mentioned above, I (like doubleplugga) set my HLT temp to be 1 degree higher than the intended temp of my MT.
Also where are your guys probe placements? is it on the ball valve outs? like the electric brewery? Mine are in the front of the vessel. I was wondering if this would pose any inconsistency with temp. I'd say with the HLT it wouldn't since its got an active whirlpool but in the MLT with the slow mashing it could throw it off a little?
I have mine on the ball valve out.
Curious about your "slow mashing" comment about the MT. My recirc rate is the same for both the HLT and the MT -- good healthy flow and, in the MT, there's a very noticeable whirlpool. In fact, the only way to keep the temp of the MT in the vicinity of the HLT's temp (especially when ramping up) is to run your wort pump wide open. Don't you do the same?
When you add your grain you dont notice any loss of temp at all? or does it just ramp back up quick enough not to care?mb-squared said:hi Gavin, I'm up with my kids early too
as for brew day schedule, I do what Kal does: http://www.theelectricbrewery.com/brew-day-step-by-step?page=3
The only difference is that my HLT is not as big as his, so I start with my HLT full and my MT filled to desired level (for my water-grain ratio), and then I recirculate until temps in both pots are at mash in temps. From then on out, my process is identical to his. I have found that I hit my numbers every time and I get the same high efficiencies that he does. So I aint fixin what aint broke
Sounds straight forward, I had a brewtroller on my last rig it was nice the only thing I can't do with my PIDS that I miss is the auto volume, i.e. press start and my water in turns on and fills my HLT to my required level, then on sparge will start and stop when the required amount of water has left the HLT. looked at the BCS units was a little dear for me back then.mb-squared said:I typically dough in at protein rest temps so I haven't gotten too concerned about a degree or two at the beginning of the mash. I dough in at 120F (sorry if you use C, I use F), slowly open the valve on my wort pump to wide open (over ~10mins) to make sure I don't compact the grain bed (which I NEVER stir), then hit 'go' on my BCS-460. It handles everything until sparge time, beginning with ramp to sachrification, sachrification rest, ramp to mash out, then it sounds an alarm and/or sends me an email, telling me to switch my hoses around for the fly sparge.
I work from home most days and it isn't uncommon for me to brew on work days, thanks to the BCS running the brew day for me
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