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Halogen Monitor
Operation
2 Operation
2.1 Front Panel Display & Controls
2.2 Connecting Gas-Sample & Exhaust Lines
2.2.1 Overview
A single gas-sample line needs to be run from the HM unit to the area to be monitored. An optional purge-
air line can also be installed to bring fresh air into the monitor for the purpose of resetting its infrared
detector to a baseline of 0 ppm during the purge cycle. Also, an optional exhaust line can be installed to
vent refrigerant gas away from the monitor.
2.2.2 Connecting the Gas-Sample Line
To connect the gas-sample line to the monitor, simply push the tubing onto the elbow connector and
attach the elbow onto the Gas Sample Port on the front of the monitor as shown in the illustration below.
The gas-sample line can be up to 50 ft (15.2 m) in length. All tubing bends should have a radius of no
less than 5" to ensure proper airflow. If kinks or obstructions occur in the line the monitor may not function
properly.
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.
An external filter (P/N 3015-5324) should be attached to the end of this line (see figure below).
Instruction 3015-4584 Rev 9
5
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