Inficon HAPSITE Smart, Руководство по эксплуатации

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B - 5
IP
N 07
4-
39
7-
P1
G
HAPSITE Smart Operating Manual
3/16" to 1/8" Reducer . . . . . . . . . . . (Swagelok part# SS-300-R-2)
3/16" Teflon Ferrule Set . . . . . . . . . . (Swagelok part# T-300-Set)
1/8" Nut . . . . . . . . . . . . . . . . . . . . . . (Swagelok part# S-S-202-1)
1/8" Ferrule Set . . . . . . . . . . . . . . . . (Swagelok part# SS-200-Set)
The 3/16" O.D. tube on the Tedlar bag valve will slip into and out of the 3/16" nut
on the adapter, which can be easily finger tightened to seal leak free on the Teflon
ferrule set. Care should be taken to not completely unscrew the 3/16" nut from the
adapter each time a Tedlar bag is removed, to prevent dropped and lost nuts and
ferrules. The 1/8" end of the adapter is a swaged connection to the 1/8" male
Swagelok fitting on the end of the HAPSITE Hand Control Unit, so wrenches will
be required to make a leak free connection here.
The Tedlar bag valve should be open only during the HAPSITE sample taking
cycle, to save gas usage.
B.1.3 Gas Cylinder Safety, Contamination Checks, and Corrective Steps
WARNING
Safety of operations should always take precedence in
the working environment. Gas cylinders should be
properly affixed to lab benches with clamps, or chained
to the wall for safety. A safety certified gas cylinder cart
should be available in the vicinity of where the cylinders
are normally used, for moving them and replacing empty
cylinders. Gas cylinders should never be transported
with the regulator attached!
Tedlar bags may be cleaned for reuse, or replaced with new bags. To clean a Tedlar
bag for use with different VOC's or concentrations, partially fill with VOC-free N2 or
VOC-free air, heat it to 40-50 °C by wrapping the bag with an electric blanket for
several minutes, then evacuate the bag contents through the open valve with a
clean transfer line to a diaphragm vacuum pump. This operation should be
repeated 3 times for a normal cleaning, then the bag may be stored filled with VOC
free N2 or VOC-free air until needed.
To protect the concentration integrity in the bag, care should be taken to purge and
refill any standard gas mix after two weeks and to keep the standard gas mix at
room temperature between samplings, with the bag valve securely closed,
This is especially important for concentrations below 1 ppmv and for VOC's of
limited stability in the Tedlar sample bags. Depending on the compounds (and their
concentrations) that were previously present in the bags, and if the bags are to
contain less than 1 ppmv standard gas mixes, pre-analyze the bag (after the