2 attaching a bag sample – INFICON HAPSITE Smart Plus Chemical Identification System User Manual
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HAPSITE Smart Plus Operating Manual
Figure 2-66 Diagram of Proper Ferrule Orientation in the Probe Nut
2.11.2 Attaching a Bag Sample
When samples are collected to be run later, various sampling bags can be used.
This procedure outlines the steps used to attach a Tedlar® Bag.
WARNING
Be sure the bag valve remains closed when it is not
attached to the probe. Make sure there is an exhaust tube
attached to the exhaust port on the HAPSITE. Be sure the
exhaust vents to a safe area.
1
Before attaching a Tedlar Bag to the Probe, refer to
to ensure proper ferrule orientation in the probe nut.
2
Prepare the Tedlar Bag sample. Avoid filling bag more than 80% full. Be sure
the white valve is closed on the Tedlar bag.
3
Loosen the nut on the probe by turning the nut counter-clockwise up to two
complete revolutions.
4
Guide the white cylindrical stem of the bag valve assembly into the opening of
the probe nut. Firmly push the stem into the probe nut. Two cylinder "clicks" are
usually felt before the bag is properly seated into the probe nut.
5
Finger tighten the probe nut by turning the nut clockwise.
6
When it is time for the HAPSITE to collect the sample, open the Tedlar Bag by
turning the valve one complete counter-clockwise revolution.
Narrow end of cone
pointed upwards
Beveled side of back
ferrule pointed upwards
Body of the probe nut
NOTE: Use a guide (such as a pen cap or sharpened
pencil) inside the opening of the nut to ensure correct
back ferrule orientation.