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Old 01-31-2013, 10:45 AM   #41
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Stream does not (or should not) be seen by the sensor. I am more worried about debugging the sensor for the temp change and the nonreflective surface of the foam. Haven't gotten it yet...
I have used ultrasonic for many years for measuring levels of various materials. Most are not affected by dust or turbulance. I would think that foam would not be an issue but if your using it to measure level in HLT or MLT, foam shouldnt really be an issue. Im in the process of puting mine together with a Micrologix 1500 PLC and plan on using ultrasonic for the HLT. Plus this is just my 2¢.
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Old 02-08-2013, 02:23 AM   #42
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I have used ultrasonic for many years for measuring levels of various materials. Most are not affected by dust or turbulance. I would think that foam would not be an issue but if your using it to measure level in HLT or MLT, foam shouldnt really be an issue. Im in the process of puting mine together with a Micrologix 1500 PLC and plan on using ultrasonic for the HLT. Plus this is just my 2¢.
Nice. Micrologix! I know a professor who had one that wanted me to program it and build him an automated brewery. Unfortunately, at the time I knew nothing about that ladder logic programming language. Would love to have one of my own to play with.
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Old 02-08-2013, 02:33 AM   #43
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Pretty slick, but datasheet specs only rate it to 150°F, so would probably fail in brewing conditions.
I highly doubt the stream over 12" above the liquid is 150F in an atmospheric pressure.
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Old 02-09-2013, 04:09 PM   #44
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Arduino ultrasonic volume measurement thingy:

http://www.jo3ri.be/arduino/blogduin...hasbeenupdated

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Old 02-20-2013, 08:01 PM   #45
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There are plenty of devices to measure level along an analog scale.

They are just very expensive.

http://www.omega.com/toc_asp/section...k=green&flag=1
Wondering if anyone has any experience with a proximity sensor strapped to siteglass?

http://www.digikey.com/scripts/DkSea...google&cur=USD
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Old 02-20-2013, 08:21 PM   #46
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Sometimes I think this get over engineered when they can be very simple. I know you said no float switch but it doesn't need to be attached to the pot. I attached it to my sparge arm so the whole thing comes out in one piece and is not part of the pot.

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Old 02-20-2013, 08:38 PM   #47
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Sometimes I think this get over engineered when they can be very simple. I know you said no float switch but it doesn't need to be attached to the pot. I attached it to my sparge arm so the whole thing comes out in one piece and is not part of the pot.

Slick setup, with simple elegance! I'm guessing the whole assembly is vertically adjustable for different batch sizes? Do you have a source/price you can share?

Still interested in a way to set sparge volume, what is the range of sensing with that float?

Thanks, Dale
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Old 02-21-2013, 06:13 AM   #48
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... Do you have a source/price you can share?

Still interested in a way to set sparge volume, what is the range of sensing with that float?
eBay, search "Stainless Float Switch". There's plenty of different lengths, mounting options. I have a few of them for my rig, they were about $8 each.
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Old 02-21-2013, 04:31 PM   #49
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Interesting ideas here! For those of you using pressure sensors (like with the Brewtroller), do you use this on a MLT? If so, wouldn't the suction from the pump during recirculation lead to inaccuracies during recirculation?

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