• Fasten the sample tubing to supports.
• Do not tightly pinch the tubing; otherwise, flow may
be restricted.
• Fasten the end of the sample tubing and sample inlet in
the monitoring area.
• The sample inlet should be pointed downward to
prevent dirt and water from entering the sample
tubing line.
5. Install the end-of-line filter at the end of the sampling tubing.
6. Check for leaks along the entire length of the sample
tubing line. Any leak will dilute the gas sample from the
area of interest and give a lower than actual gas reading.
Exhaust Line Placement
1. For DC pump only:
Attach 1/4-inch (6.35 mm) OD sample tubing
to the exhaust outlet fitting.
For Aspirated systems only:
Attach 3/8-inch (9.52 mm) OD sample tubing
to the exhaust outlet fitting.
2. Route the exhaust tubing into a safe area where the gas
sample can be vented. Avoid any sharp bends or elbows.
Route the tubing to allow any collected water to drain.
• The maximum exhaust tubing length is 20 feet (6 meters).
NOTE: Do not run the exhaust tubing in water or across
areas of vibration or across doorways, man ways or
access ways; otherwise, a leak in the exhaust
tubing or a tripping hazard may result.
3. Fasten the exhaust tubing to supports using suitable
hardware (not supplied).
4. Fasten the end of the exhaust tubing in the area of interest
by using suitable hardware (not supplied).
• Exhaust inlet should be pointed downward to prevent dirt
and water from entering the exhaust tubing line.
NOTE: Exhaust to a safe or non-hazardous area only.
5. Check for leaks along entire length of the exhaust tubing line.
Chapter 1, Set-up
1-8
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