Micro-GASS Setup Instructions
Installation
Enclosure Mounting
The Micro-GASS enclosure is
rated NEMA 4, but the system is intended for indoor installation. For
mounting, choose a location to avoid exposure to direct sunlight as it
may raise the internal temperature above the operating limits, nor
should the system be subjected to extreme cold (<10C). Vertical
orientation of the system is required for proper operation of the flow
meter. A set of four mounting feet are supplied for mounting the system
on 12-1/4" centers.
Sample Connections
Sample Inlet and Heated Line
Connection - To prevent condensation of the sample gas a heated line may
be required. The Micro-GASS is supplied with a heat shrink sealing
heated-line fitting sleeve or "boot". Connect the boot to the enclosure
with the fitting hub inside the enclosure and the o-ring seal on the
outside, as shown in the figure, tighten to secure. The heated sample
line passes through the sleeve into the enclosure. Remove the insulation
from the heated line and connect the sample line to the 1/4" compression
fitting at the inlet to the filter body. Heat shrink the boot sleeve to
the heated line:
-
Before heat shrinking the
boot connect the sample line to the filter and ensure that it is in
its final and ultimate position. The sleeve is adhesive lined and
the heated line cannot be removed after shrinking.
-
Provide adequate ventilation.
Fumes from burning can cause eye, skin, nose and throat irritation.
Using a low intensity heat source; such as a hot air heat gun, or
infrared heat source, heat the boot evenly until the sleeve shrinks into
place.
-
Allow extra heating time to
ensure that the adhesive melts and flows for proper adhesion. Keep the
heat source 1" away from the heated line.
-
Keep the heat source moving; do
not concentrated the heat in one place. If charring or burning does occur,
stop heating immediately.
Dry Sample and Purge
Connections - 1/4" Bulkhead compression fittings located on the side of
the enclosure are for theses connections. Connect the "Dry Sample Outlet" port
on the Micro-GASS enclosure to the inlet port of the sensor. Connect hte sensor
exhaust/outlet back to the "Dry Sample Return" on the Micro-GASS. No heated line
is required for these connections unless the lines will be exposed to cool
temperatures (<10°F).
Sample Exhaust - The
sample exhaust can either vent freely, or can be piped away from the Micro-GASS.
This gas is "wet" and condensation in the line is likely.
Calibration Gas
Connection
– ¼” Bulkhead compression
fitting is located on the
enclosure bottom. The
port must be plugged when
not in use, a cap is
provided.
Electrical Connections
- 60 Watts, 110 or 220 Volts
Standard 110VAC
receptacle
is
provided. For 220-volt
systems, a pigtail cord is
provided for connection to
the appropriate 220-volt
plug (not provided).
Heated Line
– For connection to the
heated line two female and
one male bullet connectors;
for neutral, line, and
ground connections
respectively, are provided.
An in-line fuse holder is
provided for a fuse not to
exceed 10 amps.
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