RLDS - Connecting Gas Sample Lines
RLDS Installation • 11
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.
3.2.3. 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) can be used with the
RLDS to filter refrigerant from the purge line. It may
be mounted adjacent to the monitor. A line-end filter
(P/N) should be attached to the end of the purge line
when the charcoal filter is not used. Note that the
charcoal filter option must NOT be used in ammonia
or CO2 applications.
3.2.4. Connecting Exhaust Line
An exhaust line (¼” OD tubing) (6.35 mm) can be
used when it is required to vent gas samples away
from the instrument and should not exceed 300 feet
(91.44 meters). The exhaust line should terminate in a
location that is completely isolated from the purge
line termination point and other areas of the facility
that will be monitored. Ideally this line should
terminate outdoors in a location that is not exposed to
the elements. This line does not require a line-end
filter. If the exhaust line terminates outside the
building, position the tubing so that no water or
moisture can enter it.
3.2.5. Connecting Sample Intake
Lines
The RLDS is designed to accommodate up to 16
separate sample intake lines. The standard
configuration of the unit includes one manifold of
four intake connectors and one purge connector.
Additional manifolds can be easily installed to
increase monitoring capacity. Please contact
Technical Assistance (
770-425-2724
) for more
information. Additional
manifolds can be easily installed to increase
monitoring capacity (field installation kit and four
zone line end filter kit) zone line end filter kit.
Sample intake lines can be up to 1,200 feet (366 m)
when no exhaust tubing is used. Otherwise, the
combined length of the sample line and the exhaust
line cannot exceed 1,200 ft (366 m). All line
terminations should be positioned to reduce the
Figure 3-4
- Using PTC Connectors: Connecting (Left) and Disconnecting (Right)
IMPORTANT: (CO
2
Only): Because CO
2
is
present in ambient air, the purge line MUST
BE run outside, away from any known sources
of CO
2
gas. An atmospheric CO
2
concentration value can be manually entered by the
user in the CAL screen. CO
2
is supported by RLDS-CO
2
units. See Navigating to the Calibration Screen Section.
Summary of Contents for GW-810-3760
Page 1: ...Refrigerant Leak Detection System RLDS Installation and Operation Manual 026 1309 Rev 11 ...
Page 37: ...30 RLDS I O Manual 026 1309 Rev 11 Figure 4 22 Connecting the Gateway to the RS485 Network ...
Page 84: ...Appendix B System Menu Map B 79 Appendix B System Menu Map ...
