Model 200X Series
Gas Sensor Monitors
Model 2001 - Combustible Gas
Model 2003 - Hydrogen Sulfide
Model 2006 - Carbon Monoxide
Sierra Monitor Corporation 1991 Tarob Court Milpitas, CA 95035 (408) 262-6611 (800) 727-4377 Fax: (408) 262-9042
Semiconductor-Type Sensor
A solid-state semiconductor-type sensor and associated
electronic circuitry ensure trouble-free, long-term opera-
tion. There are no pumps, filters or chemical cells to
replace or maintain. Except periodic calibration to verify
the alarm setting, no attention is required after installa-
tion. The user may adjust the alarm level by using a
different calibration gas concentration.
A sensor self-check feature will flash the LEDs on and
off alternatively and sound an interrupted tone as a warn-
ing should the sensor fail (open circuit).
Remote Alarm Available
If a remote alarm is desired, the Model 2102 Dual Chan-
nel Alarm Panel can be connected up to 500 feet from
the monitors.
The Model 200X Series are compact, solid-
state, fixed-installation single alarm monitors
designed for continuous area monitoring of
Combustible Gas, Hydrogen Sulfide, or Car-
bon Monoxide.
The Model 200X Series consists of three separate gas
monitors, Model 2001 for Combustibles Model 2003
Hydrogen Sulfide and Model 2006 for Carbon Monoxide.
A red LED (light-emitting diode) and audible alarm acti-
vate when the concentration of gas exceeds the factory-
set (and user-adjustable) level. A green LED indicator
on the monitor shows that power is connected and it is
a safe condition.
The standard configuration has a buzzer and normally
operating open relay, a fail-safe normally operating closed
relay is field selectable.
All the electronic circuitry needed to operate the moni-
tor, except the DC input power, is contained in a com-
pact unit. It may be mounted in any orientation. For a
single-monitor installation and a local alarm, the accom-
panying AC-to-DC power supply may be plugged into a
standard AC source. The monitors accept 9 - 24 VDC.
Benefits
Reliable operation
Fail-safe configuration
Maintenance free operation
Quick easy installation and connection to
alarm panel
Features
Self-check feature signals sensor failure
Optional normally operating closed relay
No chemical cells to replace, no periodic
maintenace other than routine claibration
All the electronic circuitry needed to operate
the monitor contained compact unit, power
suplly plugs into standard AC source
