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0 Instruction <br />Manual <br />7.0 SPECIFICATIONS <br />Sensor TYp e: Solid -State Metal Oxide Semiconductor 0 <br />Visual Indicators: <br />Input: <br />Green LED for Monitor "ON/Safe", Red LED for Alarm <br />LEDs oscillate ON/OFF for sensor failure <br />(LEDs are external on the 200X Series, <br />and internal for calibration on 20X Series) <br />9 - 24 VDC (±1 V), 250 mA <br />200X Series includes a Class 2 plug-in 120 VAC AC/DC Power <br />Supply. Wiring methods should follow US NEC and the Canadian <br />CEC and Class 2 power source requirements. Alternative power <br />supplies should be Listed/Certified Class 2 output power source. <br />Range: (at 50% relative humidity) <br />Model 201/2001 300-2,000 ppm Hydrogen, 500-10,000 ppm Methane <br />Model 203/2003 10-50 ppm Hydrogen Sulfide (H2S) <br />Model 206/2006 50-500 ppm Carbon Monoxide (CO) <br />Factory Alarm Setpoint: <br />Model 201/2001 1000 ppm Methane <br />Model 203/2003 50 ppm H2S <br />Model 206/2006 100 ppm CO <br />Output: <br />20X/200X-00 Series 0.5 amp dry contact, normally open, 100 VDC, 130 VAC and audible MW <br />buzzer <br />Nominal 5 volts DC, source 25 mA, SAFE and ALARM signals are <br />user configurable <br />Response Time: <br />Model 201/2001 Less than 30 seconds <br />Model 203/2003 For 50 ppm alarm, if 50 ppm H2S is present: 1-4 minutes, <br />if >250ppm H2S is present: 30-90 seconds <br />Model 206/2006 Less than 30 seconds <br />Periodic Maintenance: None, other than routine calibration <br />Operating Temperature <br />Range: -4°F to 158°F (-20°C to 70°C) <br />Enclosure Material: <br />Model 20X Series Cast aluminum for protection against galvanic corrosion <br />Model 200X Series Stamped aluminum sheet metal <br />Size: <br />Model 20X Series 6.75 x 4.0 x 3.5 in. (17.1 x 10.2 x 6.0 cm) <br />Model 200X Series 2.7 x 2.2 x 1.0 in. (7.0 x 5.7 x 2.5 cm) <br />Weight: <br />Model 20X Series 24 oz (678 g) <br />Model 200X Series 3.8 oz (108 g) <br />20X/200X Gas Sensor Module (08/04) Page: 12 <br />