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C 401
Set points Menu
GB 03316 - Edition 02 - January 09
If the signal quickly increases above He max. set point, the cycle
is automatically ended and the leak detector returns to stand-by
mode.
On this way, the leak detector is protected from gross contamination
by gross leaks.
We recommend that the He max. be set a maximum of 4 decades
above the set point.
Prevents the detector from being polluted by helium in hard vacuum
test mode.
In case of a high background due to pollution, a simple way to
purge the helium from inside the detector is to start a cycle without
a blank off on the inlet. The detector stays at atmospheric pressure
and creates an internal venting that "pushes" helium outside.
Just do
that 30 s, 2 or 3 times max, and the level will decrease to
around 10
-8
or 10
-9
mbar.l/s. To decrease the level further, just let the
detector run with the inlet blanked off and in test.
He max.
Very useful function if the part or installation to be tested contains
a lot of helium.
•
2 adjustable set points:
reject set point in hard vacuum,
reject set point in sniffing.
Define the acceptance threshold of the good/bad parts:
leak value measured ≤ reject set point => part accepted
leak value measured > reject set point => part rejected.
Set Points
Fast access to setting from the control panel:•
adixen Vacuum Products - ASM 310 Operating instructions
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