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Old 04-21-2014, 01:07 AM
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N2GN2 N2GN2 is offline
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Default Homebrew capacitive water in oil % saturated meter testing

I've been looking this over today. Has anyone built one yet?
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Old 05-14-2014, 01:57 AM
Memphis10 Memphis10 is offline
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That seems like it could work, that guy seems intensely intelligent
Is anybody else looking into this
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Old 05-17-2014, 04:20 AM
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Default My simplistic home brew and testing

Intense science is a fitting word. I had read this when I started with WVO in January and my head is still spinning.

So far the Hot Pan Test is all I manage to do consistently, and it consistently shows no water after cubie-settling for a couple of weeks in the off-the-top poured oil at the bottom of my tablecloth-pre-filter barrel.

I heat a small cast iron pan to 250-300F and look for bubbles first with about a teaspoon amount of oil: No crackling, no bubbles.
Then (after emptying the pan) I fill the pan about a quarter-inch. No bubbles, except if I let the oil heat up over 380F, at which point some oil begins to boil with small oil (not water) bubbles.

Some of my restaurants have very dark looking oil with several inches of crud settling that I leave in the cubie, some have almost clear oil with nothing settling except for some felafel crumbs.
Each week I pour about 40 gallon (9 cubies) over the course of a day through the prefilter-cloth and scrape in between with a plastic spoon about 3 ounces of oil mixed with a somewhat slimy layer from the bottom of the cloth (which is suspended flat in a 23" diameter strainer).

Even though I find no water, for good measure I heat that (R16 insulated) barrel with a belt heater to about 170F (takes about 4 hours) and let it cool down to my year-round stable basement temperature of around 65F, which takes about 3 days.
No crud or water is detectable in the oil at the bottom drain valve (the drain is at the lowest barrel point in the 3/4" bung of a closed-top barrel standing at a 2 angle on it's head). That lowest 6" of oil has been sitting there now for months, still it is clear with no crud or water detectable.
I pump the cooled-down oil from about 6" above the bottom into my 'clean and final' barrel through a 1 micron 32" long sock filter. That filter still looks like new after 5 months. And the clean and final oil also shows no water bubbles.

Tell me what the experts think, am I doing it wrong?
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Old 05-17-2014, 01:56 PM
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The parts for this build are on the way.
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Old 05-18-2014, 06:56 PM
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Quote:
Originally Posted by N2GN2 View Post
The parts for this build are on the way.
Nice. Keep us posted!
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Old 05-28-2014, 09:57 PM
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Got my sensors today and built the probe same as SunWizard. The 500 degree silicon is drying now.




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Old 05-28-2014, 11:50 PM
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CampVan - major thread drift, but I think you're probably doing ok

I can't wait to see the results of this sensor testing!

`Mitch
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Old 05-29-2014, 01:43 PM
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Wow, that looks incredibly simple compared to all the technical jargon in that Wizard's post. I too can't wait to see the results of this thing, keep us posted and thanks for sharing!
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Old 05-29-2014, 04:09 PM
MtnOilRig MtnOilRig is offline
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That's hilarious Memphis, I took one look at the words and graphs and thought it was way too much for me...

Thanks N2G2...boiled it right down. What did the parts cost shipped to your house?
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Old 05-29-2014, 09:14 PM
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I have over $25 in the complete unit.
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