VICI D-4-I Quick Start - Manual (Page 4)

Hydrogen Leak Test
A hydrogen leak test allows you to pinpoint loose fittings
and leaks inside the detector.
1. Connect a length of plastic tubing to a regulated
hydrogen bottle. Establish a flow of 5 -10 ml/min.
2. Hold the hydrogen outlet tube at a fitting connec-
tion for ten seconds while monitoring the
baseline. (Flip the mode switch to PDECD and
back to PDHID to un-zero the baseline.)
If the baseline stays the same, that connection is
leak-free. If the baseline goes up, you have
located a leak.
3. Tighten the fitting and test it again, repeating as
necessary until every connection has passed the
ten second test.
4. If the current remains high, hold the hydrogen
outlet close to the detector. (Do not insert the
tube into any detector holes.) If a leak in the
detector is indicated, contact Valco.
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