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M11Csierra monitor corporation Model 20OX Series Gas Sensor Monitors Model 2001 - Combustible Gas Model 2003 - Hydrogen Sulfide Model 2006 - Carbon Monoxide The Model 20OX 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 20OX Series consists of three separate gas Semiconductor-Type Sensor monitors, Model 2001 for Combustibles Model 2003 Hydrogen Sulfide and Model 2006 for Carbon Monoxide. A solid-state semiconductor-type sensor and associated A red LED (light-emitting diode) and audible alarm acti- electronic circuitry ensure trouble-free, long-term opera- vate when the concentration of gas exceeds the factory- tion. There are no pumps, filters or chemical cells to set (and user-adjustable) level. A green LED indicator replace or maintain. Except periodic calibration to verify on the monitor shows that power is connected and it is the alarm setting, no attention is required after installa- a safe condition. tion. The user may adjust the alarm level by using a The standard configuration has a buzzer and normally different calibration gas concentration. operating open relay,a fail-safe normally operating closed A sensor self-check feature will flash the LEDs on and relay is field selectable. off alternatively and sound an interrupted tone as a warn- All the electronic circuitry needed to operate the moni- ing should the sensor fail (open circuit). tor, except the DC input power, is contained in a com- Remote Alarm Available pact unit. It may be mounted in any orientation. For a single-monitor installation and a local alarm,the accom- If a remote alarm is desired,the Model 2102 Dual Chan- panying AC-to-DC power supply may be plugged into a nel Alarm Panel can be connected up to 500 feet from standard AC source. The monitors accept 9- 17 VDC. the monitors. Features Benefits ■ Self-check feature signals sensor failure ■ Reliable operation ■ Optional normally operating close relay ■ Fail-safe configuration ■ No chemical cells to replace, no periodic ■ Maintenace free operation maintenace toher that routine claibration ® Quick easy installation and connection to ■ All the electronic circuitry needed to operate alarm panel the monitor contained compact unit, power suplly plugs into standard AC source 1 Sierra Monitor Corporation 1991 Tarob Court Milpitas, CA 95035(408)262-6611 (800)727-4377 Fax: (408)262-9042