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Instruction Manual
Model 2350 / 2360 Gas Monitor (3/99)
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1.2 GENERAL DESCRIPTION
1.2.1. MECHANICAL
The Gas Monitor is comprised of a printed circuit assembly mounted behind a flat cover plate which serves as the
instrument cover when installed into a user supplied, three position electrical gang box (figure 1.3).
Electrical connections for power (-48 VDC) and relays (dry contact alarm activated) are made via screw terminals on the
printed circuit board prior to installation into the gang box.
Calibration adjustment potentiometers are accessible through the cover plate.
• SENSORS: Gas and temperature compensating sensors are installed onto the printed circuit assembly
and are protected by the cover plate. The sensors can be replaced by removal of the monitor from the
gangbox. The Combustible and Carbon Monoxide sensors are metal-oxide semiconductor type solid state
devices for long life. The electrical resistance of the sensors is inversely proportional to the gas concen-
tration.
• CONNECTORS: All user connections are made via convenient multi-position screw terminal strip
located on the component side of the printed circuit assembly. Wiring access to the monitor can be
determined by the installer by selecting any hub knockout on the gang box.
Figure 1.2
Model 2350-00
2