Table of Contents
Advertisement
used to connect a single gas cylinder
directly to a single dock. Connect the
white quick disconnect fittings to the
GAS ports on the docks and connect
the open ends to the manifold's open
t-fittings.
At this point, tubing should run from each
dock's GAS port to the t-fittings. There
should be no open T-fittings in the
procedure, but there should be one piece
of open tubing on the elbow fitting.
4. Connect the open piece of tubing on
the elbow fitting to the Demand Flow
Regulator.
Final Appearance
Note: Tubing lengths in these images
are not to scale.
2.7.3 Fresh Air Port Instructions
The Fresh Air Port is used to draw the
fresh air sample into the dock for
instrument processing. Check valves
and/or fresh air filters are required
depending on how fresh air is delivered to
the dock. See the chart below for specific
requirements for your setup.
Single Dock in Fresh
Air
Multiple Docks in
Fresh Air
Single Dock w/Zero
Air Cylinder
Multiple Docks
w/Zero Air Cylinder
Single Dock w/Sealed
Fresh Air Conduit
Multiple Docks w/
Sealed Fresh Air
Conduit
Air Filter / Check Valve
Requirements Chart
The fresh air filter is placed on the Air Port
at the dock to protect the dock from
contaminants. Check valves are used to
ensure the purity of external fresh air
sources when more than one dock is
used.
Fresh Air Filter
Under normal circumstances, the IQ
Express Dock is located in a fresh air
environment and fresh air is drawn in from
the local environment. A filter is included
with the dock that is used to protect the
dock from contaminants that may
inadvertently enter the dock. The air filter
should be installed if the dock is drawing
fresh air from the immediate surroundings
or if it is drawing fresh air from an external
source via a sealed conduit. The fresh air
filter can be left off if the fresh air source is
a calibration cylinder.
Only one side of the
filter will screw into
the Air Port on the
dock.
10
Air Filter
Check
at Dock
Valve(s)
Yes
N/A
Yes
N/A
No
No
No
Yes
Yes
No
Yes
Yes
Advertisement
Table of Contents
