Omg someone went to justanswer.com for help in CTB.
@chester i'm in the same boat as you.
I'm stuck between weather or not the flow meter is higher or lower than the correct reading
and if so by what factor.
Right now iv settled on the idea that I should multiply my intended usage by 1.2
You can use an argon regulator (with flowmeter) on a nitrogen cylinder if the cylinder connection for nitrogen in your region is the same as an argon cylinder connection. ... You seem like you've done a lot of research. Do you know if a US (CGA580 flowmeter connection [like this one]) works...
sanctioned-suicide.net
However I still dont know who is right and who is wrong,
Iv seen the answer of a minus 80% reduction thrown around before
using the logic that Air is basically nitrogen,
and that Argon is 18% heavier than than air
and that Air is 2% heavier than nitrogen
Therefore argon is 20% heavier than Nitrogen
But if you think about it for a second.
weather or not Nitrogen is 20% or 30% lighter than Argon.
Pushing a lighter gas through a flow meter calibrated for a heavier gas
would mean that you would need a more gas to push the ball on the flowmeter.
Which would be that if the reading is 10LPM you are in actual fact using 20/30% more nitrogen
to get the same reading.
All i know for certain is the results of the two tests I ran
and until i see otherwise, i can only assume that everything
else is just some one on the internet giving their opinion
I really don't know either.
do let me know if your research shows up anything else.
I also found these two sources.
It appears someone asked this question on homebrewtalk
I have a nitrogen cylinder and an oxygen regulator and argon flow-meter. I am wondering whether I will get an accurate reading of flow of gas per minute? Will the meter show an amount that is less or more than actual flow?
www.homebrewtalk.com
one of the comments includes a dead link but the comment states:
"
argon is a considerably heavier gas than nitrogen. I would think that the indicator is calibrated for the "thicker" gas. using nitrogen would indicate low IMHO.
looks like you would need to convert it
"
brooksinstrument.com talks about
and shows you how to perform conversions if your running Argon
out of an Air.Oxygen regulator. and includes this formula.
View attachment 146923
However they don't mention an argon regulator on a nitrogen tank
Enjoy access to all of Brooks Instrument's sizing tools, including variable area sizing engines, mass flow sizing engines and gas correction factors.
www.brooksinstrument.com