I understand the idea behind leak down testing but
have questions for someone who's actually used a
leak down tester before.  I haven't.

To get your % leakage number, do you just pressurize
the cylinder, cut off the airflow,  and measure the
pressure after, say, one minute of the air slowly
leaking out of the cylinder?

Or - Do you apply a constant pressure through a flow
restrictor to the cylinder and measure the pressure
on the cylinder side of the flow restrictor?  If so, how
do you decide how large a restriction to use?

What am I missing here?

Thanks!

--tabe johnson
xtabe@yahoo.com
Leaky Head Westy

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