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Instruction 3015-4256 7
Tubing Considerations
¼" outside diameter (0.040" wall) flex tubing is used for all air lines (P/N 304-2743) or equivalent. The
tubing should be clean and free of moisture or other contaminants. The tubing should be cut cleanly with a
sharp knife and care should be taken not to distort the tubing end.
Connecting the Gas-Sample Line
To connect the gas-sample line to the monitor, simply push the tubing into the Gas Sample Port. All
tubing bends should have a radius of no less than 5" to insure proper airflow. If kinks or obstructions occur
in the line the monitor may not function properly.
Please refer to Section Suggested Location of Sampling Point (Page 4) to learn more about where to take a
sample.
The gas-sample line can be up to 50 ft (15.2 m) in length. The end of this line should be placed near the
potential leak source and positioned to reduce the possibility of mists, aerosols, oil, water, dust, or other
contaminates being drawn into the monitor. For added protection, a termination filter (P/N 3015-3420)
should be attached to the end of this line.
CAUTION: The introduction of contaminants through
the gas-sample line can result in serious and
permanent damage to the monitor.
Connecting the Exhaust Line
The exhaust line functions to carry the exhausted gas sample away from the monitor, and is required if
the monitor is located in a confined, poorly ventilated area. Note that if the monitor is exposed to usually
high level of refrigerant gas for prolonged periods of time, its charcoal filter will quickly become saturated
and no longer to able to clean the purge-air of refrigerant gas.
The exhaust line can be up to 50 ft (15.2 m) in length. Ideally this line should terminate outdoors in a
location that is not exposed to the elements. Connect the exhaust line to the monitor by firmly pushing the
tubing onto the Exhaust Port’s barbed fitting. If the exhaust line terminates outside the building, position
the tubing so that no water or moisture can enter the line. Note that this line does not require a
termination filter.
Termination Filter