Specifications

Multi-Zone Gas Monitors
10 P/N: 3015-5074 Rev 10
Figure 2-2. MZ Monitor Side View
2.2.2. Tubing Considerations
Use ¼” (6.35 mm) outside diameter (0.040” or 1.016 mm wall) flex tubing for all air lines (P/N 3015-3235) or
equivalent. The tubing should be clean and free of residual 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.
To connect the air lines to the monitor simply push the tubing firmly onto the connector. To remove a line,
press the plastic ring on the connector with one hand, then withdraw the tube with your other hand. See
below.
The MultiZone monitor uses push-to-
connect (PTC) style connectors.
To insert sample lines, firmly push the
appropriate tubing into the hole in the
center of the connector until it seats in
the connector. Refer to the figures at
the left.
To remove tubing from a PTC
connector, push and hold the spring-
loa
ded collar inwards, then
simultaneously withdraw the tubing.
Refer to the figures at the right.
Figure 2-3. Using PTC Connectors: Connecting (Left) and Disconnecting (Right)
All tubing bends should have a radius of no less than 5” (12.7 cm) to ensure proper airflow. If kinks or
obstructions occur in any of the air lines the instrument may not function properly.
2.2.3. Connecting Purge Line
A purge line is an intake line that is required to draw fresh air into the instrument and should not exceed
300 feet (91.44 mm) in length. It is advisable to terminate the purge line outdoors, provided the input is
not exposed to rain, snow, ice, exhaust fumes, or other airborne contaminates. If an outdoor installation
is impractical, the line should be run to an area inside the facility that you are certain is not contaminated
with ambient gas. If this is not possible, an optional charcoal filter assembly (P/N 3015-3125) can be used