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dnierer
Joined: 22 Jul 2013 Posts: 38 Location: Slatington, PA
Drinking: Electric Hop Candy
Working on: Pliny the Elder, Pliny the Younger
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Link Posted: Sat Nov 30, 2019 9:44 pm Post subject: Corny Keg Level Sense |
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I have Corny Kegs that have a Level Sense Dip tube with a rubber stopper on the end, when energized the stopper floats at the liquid level. See attached photo of the level sense connector. I will trade someone 2 new in box corny kegs with level sense if you can help me built a digital readout for a 3 keg system to report the level in each keg.
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Level Connector instructions |
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Level Sense Connector.pdf |
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kal Forum Administrator
Joined: 12 Dec 2010 Posts: 11116 Location: Ottawa, Canada
Drinking: Pub Ale, Electric Creamsicle, Mild, Pliny the Younger, Belgian Dark Strong, Weizen, Russian Imperial Stout, Black Butte Porter
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dnierer
Joined: 22 Jul 2013 Posts: 38 Location: Slatington, PA
Drinking: Electric Hop Candy
Working on: Pliny the Elder, Pliny the Younger
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Link Posted: Sat Nov 30, 2019 10:49 pm Post subject: |
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My brother in law bought a number of these at an auction, I know they are manufactured by Abbott Laboratories. The information on the box indicates these are "Qwikwash Water Cannister" part no. LN 6208-20, for use with Abbott Commander PPC and Qwikwash Instruments. There is another number on the label 43968-102. I can't find anything on google either. I have know idea how they work.
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kal Forum Administrator
Joined: 12 Dec 2010 Posts: 11116 Location: Ottawa, Canada
Drinking: Pub Ale, Electric Creamsicle, Mild, Pliny the Younger, Belgian Dark Strong, Weizen, Russian Imperial Stout, Black Butte Porter
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Link Posted: Sat Nov 30, 2019 11:13 pm Post subject: |
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Interesting.
There appears to be something stuck to to the bottom of the dip tube, so I asked because I understand how it can know level. Was curious to read more, but if you're not finding anything by Googling part numbers or company names, we may be SOL.
If it's a sensor at the bottom of the keg, it may only be able to let you know when the keg is empty. I don't undertand how it can know how full a keg is so that's why I'm asking for more info. Many have tried to come up with reliable ways to measure remaning keg volume devices. Some of them quite expensive. I use the old fashioned way: I lift it slightly to see how much I think is left. Doesn't need to be accurate for me, I'm usually just curious if it's around 20% full or 80% full.
Either way, good luck!
Kal
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Kazumichan
Joined: 07 May 2014 Posts: 177 Location: Cincinnati Ohio area
Working on: Belgium golden, Dubbel, and imperial red
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Link Posted: Sun Dec 01, 2019 2:18 pm Post subject: |
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It looks like a mag float sensor. The ones that I have seen operate this way. The one that you can see magnetically couples with one inside the tube. As it moves up or down the tube, the inner one moves with it. As the inner one moves it changes the resistance in a circuit that translates into volume.
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dnierer
Joined: 22 Jul 2013 Posts: 38 Location: Slatington, PA
Drinking: Electric Hop Candy
Working on: Pliny the Elder, Pliny the Younger
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Link Posted: Sun Dec 01, 2019 5:28 pm Post subject: |
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So how would I energize it and measure the resistance? I can follow direction real well, but wouldn't even know where to begin on something like this?
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Kazumichan
Joined: 07 May 2014 Posts: 177 Location: Cincinnati Ohio area
Working on: Belgium golden, Dubbel, and imperial red
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701pilot
Joined: 10 May 2016 Posts: 50 Location: northern california
Drinking: Bohemian Pilsner,Caribou Slobber, Munich Helles, Weissbier, Black Bute Porter, RIS, Irish Red Ale
Working on: Milk Chocolate Stout
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Link Posted: Tue Dec 03, 2019 6:19 pm Post subject: |
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Put an ohm meter on the plug and start filling up the keg. See if the ohm meter changes and by how much. If indeed it changes, go online and look for a fuel leval gauge for that same ohm range and use it as a level indicator.
_________________ Mark
I can't change the laws of physics but with enough horse power I can chase it into submission.
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mjo2125
Joined: 27 Feb 2017 Posts: 248 Location: Dayton, OH
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Link Posted: Thu Dec 05, 2019 2:02 am Post subject: |
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Can't remember when, but I may have run across a mag level device similar to this in an ad in BYO magazine some time ago... Conceptually, the resistance range can be converted to voltage. If the resistance can be converted to a 0 to 5 volt DC signal, an open source microprocessor (like an Arduino) could be programmed to accept and convert the 0 - 5 volt signal to a 10-bit 0 to 1023 resolution digital signal. From there, the door's wide open - the digital signal could be sent to an LCD display and beyond.
I did something like this with a 0-5 vDC pressure sensor connected to a spunding valve and Arduino. Was able to get an LCD display of the keg pressure.
If I run across the ad again, I'll do some digging - really interesting project though.
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mjo2125
Joined: 27 Feb 2017 Posts: 248 Location: Dayton, OH
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Link Posted: Thu Dec 05, 2019 12:21 pm Post subject: |
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the experimental set up looked something like the pics. Though now, it's all cleaned up and mounted in a small control panel I bought at Home Depot. The breadboard was replaced with connected wiring. I imagine something like this could be set-up to display % level in a keg. Hope this helps.
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dnierer
Joined: 22 Jul 2013 Posts: 38 Location: Slatington, PA
Drinking: Electric Hop Candy
Working on: Pliny the Elder, Pliny the Younger
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Link Posted: Thu Dec 05, 2019 2:56 pm Post subject: |
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Nice, thanks for the suggestions
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