I just installed my flow meters in my keezer and out of the three taps two of them are coming out foamy and flat. Right now I have 7ft lines and the meters are in the center. Before I run all new draft lines I want someone to tell me 10ft draft line. 5ft before the meter and 5ft will fix the issue. Is this true? Thank you for all your help!
I run 12' 3/16" id generic Bevlex-200 lines. My meters are 1 foot of tubing from the disconnects. They nest inside the top rubbers with the coil of tubing.
My reasoning is there are fairly large air temperature swings in a keezer (unless you hammer on the compressor). Reference my temperature logger - while the air temperature differential top to bottom is as about as tight as you can hope for, that air temp still reaches almost 4°F above the beer temperature worst-case. All while the keezer cycles at ~6 hours.
So it's pretty much unavoidable to have
some degree of CO2 breakout in the beer lines at the top of a keezer. Bubbles traveling through the meter will cause "ghost pours", so putting the meters close to the QDs puts most of the breakout bubbles down-stream.
I got my six meters operational once the R'Pints code was ready last June, and I tracked the keg volumes daily. Originally my meters were in the middle of 10' runs of the same tubing, and occasionally I'd get phantom pours.
When I got around to investigating I could see collected gas in the tubing up in the tower and suspected bubbles traveling up to that point were affecting the meters. As I was going to re-tube the keezer anyway I went two feet longer and put the meters close to the QDs this time.
That was back in September and I've yet to get a single ghost pour. And
the coolest thing about that is the meter accuracy is phenomenal once the spurious stuff is eliminated. Every keg that's kicked since then has kicked within one short pour of reading empty - the last one read four ounces when the keg kicked. And the truth is my keg fills aren't anywhere near that accurate to begin with, varying by a good quart.
I love that
Cheers!