Home Brew Forums > Home Brewing Beer > General Techniques > Measuring infusion volumes - with a pump?
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Old 08-26-2014, 09:18 PM   #11
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If you put 12 gallons in your HLT (as determined by watching the level on the sight glass) and you later want to move 5 gallons to the MLT, you pump until the HLT sight glass says 7 gallons. I'm all for flow meters if it actually makes your brew day better but what happens if you forget to zero it out before you start pumping? How much is in each vessel now? Sight glasses tell you what's in the tank "now". There are a lot of ways to mark off levels on various vessels from etching the interior of the pot, to making a dipstick, but sight glasses are the only method that doesn't involve looking into or reaching into the vessel. Sometimes it's not important, other times the HLT is up on a 3rd tier above your head.

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Old 08-26-2014, 09:19 PM   #12
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Quote:
Originally Posted by ChrisfromAbby View Post

Anyhow, installing a sight glass on my MLT would be a real pain. And the idea of the flow meter appeals greatly to me.
You put the sight glass on the HLT and measure how much you remove.
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Old 08-28-2014, 01:26 AM   #13
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I think what he was saying is he has cooler MLT and would be a pain to install a sight glass


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Old 08-28-2014, 02:55 AM   #14
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No one is suggesting to put a sight glass on an MLT. OP came asking how everyone measures water leaving the HLT and really just wanted everyone to suggest a flow meter because the answer he wanted. The one from China linked there is pretty cool. If it's really food grade for high temps, it seems like a fun gadget to mess around with.

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Old 08-29-2014, 03:33 PM   #15
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Quote:
Originally Posted by Spartan1979 View Post
You put the sight glass on the HLT and measure how much you remove.
Oops, I should have written HLT not MLT originally.
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Old 08-29-2014, 03:48 PM   #16
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Quote:
Originally Posted by Bobby_M View Post
No one is suggesting to put a sight glass on an MLT. OP came asking how everyone measures water leaving the HLT and really just wanted everyone to suggest a flow meter...
That would have been a little disingenuous me! No. I originally asked this several months ago when designing my brew bench. I have wrapped My HLT with rock wool and skinned it with aluminum, adding 2 inches of thickness to the sides. Porting out for a sight glass would be difficult. I was contemplating using a grant where I could measure my water or of the HLT. I was even thinking about float levels, scales and such. It was later on I came across the flow meter idea.

The pre-measuring idea has merit, but I often do step mashes, which might cause hiccoughs.
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Old 08-29-2014, 10:11 PM   #17
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Totally. I was being a smart ass without even noticing the lag between the original post and your second followup. Apologies.

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Old 08-29-2014, 10:51 PM   #18
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No worries, I didn't think you would. I'm still buying stuff from ya!

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Old 10-10-2014, 06:51 PM   #19
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A friend is interested in trying out the pump and I was explaining my set up.
A small issue I ran into was that there is very fine mesh filter on the inlet for the solenoid. It got gummed up with debris towards the end of my sparge. Not a big deal, as the ~ 500mL/min flow rate was ok for my purposes at that point. Although I thought my HLT and sparge water were pretty clean, it didn't take much to clog the filter.

The filter IS removable, so I cleaned it under the tap with a brush and Q-tip. However, to prevent further issue, I bought a small in-line filter from an RV supply shop. This $10 pre-filter has a screw-off cap by which you can readily remove the stainless cylinder mesh to clean it.

Chris

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