Hi guys, this might be a better place…
I am a bit confused with my exit bag preparation.
After preparing almost everything I wanted to try to fill the bag over my head.
The bag, (right hand side) I estimated to be around 35liters (30-40l).
On the left hand side you can see a full 60l bag as a comparison.
Now, using my flow regulator and my helium 200 bar 5l tank,
I connected everything and set the rate to 15l/min.
Then I "fully" opened the "
shut-off valve" of my regulator.
It was quite noisy and the bag was completely filled after approx. 50 seconds.
That confused me because afaik even small bags should take like 2 minutes
to fully fill (PPeH) with the given flow rate and I though my bag is at least average/ above average in size.
Also, according to the loss of pressure of my regulator, nearly 10 bar were lost,
which means practically about more that 30liters were gone in this little time.
What's gone wrong?
According to a book I have, the
shut-off valve of my regulator should not be completely
opened but more so adjusted such that...
"When the bag is filled after about 40 to 60 seconds, the flow speed is correct and corresponds to about 15 l/min.
Does it take longer or is it possible faster, the shut-off valve should be slightly adjusted."
This makes little sense to me because then it's more about a gut feeling about how to adjust the shut-off valve
and not the set flow rate which was put in the first place. Also there's no clear bag size info in that book
for this calculation so I don't know how many liters should be filled in 40-50s. Moreover, its confusing as the
PPeH talks about 2 minutes with the given flow rate of 15l/min.
I am also annoyed by my loss of helium as I'm only with 180bar/5l now and don't know If I should test again or not...? What do you think?
Anyone can help me with that ?
THANK YOU SO MUCH IN ADVANCE!!!