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Old 01-15-2014, 09:01 PM   #11
SnowRaven
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Jan 2014
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Quote:
Originally Posted by kickflip_mj View Post
I read almost all of this and found only one issue...

3) You shouldn't use solenoid valves, they actually end up clogging because of the sticky wort. you should use these electric ball valves instead- https://www.oscsys.com/store/valves

There are actually sources for brass versions to save some coin, instead of the stainless ones.
Small butterflys would be another choice, and butterflys would be more sanitary than ball valves



 
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Old 01-15-2014, 09:08 PM   #12
SnowRaven
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Quote:
13) Oxygen aeration: I'd appreciate any ideas on this. I'd prefer NOT using an O2 cylinder, mainly because it's expensive and I want to keep this cheap for everyone.
hepa filter, aquarium air pump, S.S. Nozzel (just set this up this week) $34
http://www.northernbrewer.com/shop/r...t/list/id/931/

if you have an airpump you can just buy parts ala carte


I would like to see a pH probe option for the Mash



 
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Old 01-15-2014, 09:21 PM   #13
Spintab
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Jun 2010
Atlanta, Georgia
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Curious because I'm working on the same right now, how are you going to sense liquid levels?
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Old 01-15-2014, 10:30 PM   #14
kickflip_mj
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Jan 2008
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Quote:
Originally Posted by SnowRaven View Post
Small butterflys would be another choice, and butterflys would be more sanitary than ball valves
Where would you get these?

 
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Old 01-15-2014, 10:37 PM   #15
SnowRaven
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Quote:
Originally Posted by kickflip_mj View Post
Where would you get these?
GEA (Tuchenhagen NA) had a nice line I used a while back with HiFructose

Sprinkman in WI is an engineering house and would have some or will point you in the right direction
http://www.sprinkman.com/contact-us/

Else Google SS Butterfly I am sure China has some in the US market

 
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Old 01-15-2014, 10:51 PM   #16
iijakii
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Portland-ish, OR
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I should go to engineering school...

 
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Old 01-16-2014, 03:43 AM   #17
jgalati
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Apr 2012
Portland, OR
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Spintab: There are two ways I'm kicking the can around: the first is a pressure sensor located at the bottom of the keggle, which would be able to measure the pressure the water column exerted on the sensor. The other idea, is to insert a diptube on the entire inside of the keggle, and then measure the pressure of the air column. As the water level rises, it compresses the gas inside the dip tube, thereby telling you the liquid level has increased. Idk which one I'm using yet.

 
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Old 01-16-2014, 03:53 AM   #18
SnowRaven
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Quote:
Originally Posted by jgalati View Post
Spintab: There are two ways I'm kicking the can around: the first is a pressure sensor located at the bottom of the keggle, which would be able to measure the pressure the water column exerted on the sensor. The other idea, is to insert a diptube on the entire inside of the keggle, and then measure the pressure of the air column. As the water level rises, it compresses the gas inside the dip tube, thereby telling you the liquid level has increased. Idk which one I'm using yet.
Why not just use a Float sensor

Pressure sensor will vary with density (if used with wort)
water column with optical would be another way

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Old 01-16-2014, 04:23 AM   #19
kladue
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This should be interesting to see what they come up with, there is a lot more to creating a fully automated system than slapping some solenoid valves on a controller.
As to pressure sensors for level measurement, I use wet pressure transmitters that work well if you have a temperature sensor and the correct formula to correct for density as temperature changes.

 
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Old 01-16-2014, 04:37 AM   #20
Lopsy
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Mar 2013
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What about cleaning? That's the part that everyone of us would like to have automated.



 
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