CMS-1 CARBON MONOXIDE MONITOR
Page 5
© 2017 CLEMCO INDUSTRIES CORP.
www.clemcoindustries.com
Manual No. 23301, Rev. F
2.3.2
Connecting to respirator air supply
Do not use pipe joint compound to seal pipe
fittings. Use Teflon tape for pipe-thread sealer.
Although unlikely, there is a possibility the
monitor will respond to gases given off by
some compounds.
2.3.2.1
To ensure accurate and rapid air monitoring, the
instrument must be placed as close to the compressed-
air source as practical. Ten feet of 1/8" ID tubing with
one 1/8 NPT elbow/tubing adaptor and one 1/8" NPT
straight adaptor are furnished to be used between the
compressed air source and monitor inlet. Do not use
larger diameter tubing or pipe, or longer lengths of
tubing, as it increases the time it takes for the sample air
to reach the monitor.
2.3.2.2
Locate a suitable place to tap into the respirator
compressed air supply. Do not tap into a dead-end air
line. The tap location must be where moving air is
assured. The tap location should be within 10 feet of the
monitor, and the monitor must be placed in a location
that permits continual observance of the visual and
audible alarms.
The monitor, remote alarm, or an auxiliary
external alarm, must be in a conspicuous place
to ensure that any alarm condition is observed.
Using the dry-contact terminals and a relay, the
monitor may be interlocked with other devices
such as lights horns, or compressor shutdown,
to provide additional safeguard against an
unobserved alarm.
2.3.2.3
Place a tee in the air-supply line, and use a
bushing or other adaptor, to connect the 1/8 NPT tube
adaptor supplied. Install an isolation valve at the source
to enable depressurization for service and to remove the
monitor. Typical setups are shown in Figure 3.
2.3.2.4
The air-supply-line tee should face upward to
prevent water from accumulating in the sample-air line. If
the tap cannot face upward, install a short 1/4 NPT
drop pipe and drain to prevent water from entering the
monitor.
2.3.2.5
Attach the urethane tubing between the air
supply tube-adaptor fitting and monitor inlet-tube adaptor
fitting. Cut-off excess tubing.
Figure 3
2.4
Electrical Connections
2.4.1 120-Volt AC supply:
CMS-1 monitors are
generally installed indoors and operate on AC power. A
120-volt AC power cord is supplied and can be plugged
into a compatible AC grounded electrical service.
Electrical power may be rewired by a qualified electrician
with conduit that conforms to applicable codes.
CPF Filter
Wall Mounted
To Respirator
1/8 NPT Adaptor
1/8 ID Tubing
CMS-1
1/8 ID Tubing
1/8 ID Tubing
1/8 NPT Adaptor
1/8 NPT Adaptor
Drop Line
Power Cord
Drain
Power Cord
Isolation Valve
Isolation Valve
Compressed-Air Line
Compressed-Air Line
Power Cord
CMS-1
Compressed-Air Line
Keep this line as
short as possible.
