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Produttore : Sierra Monitor Corporation File Size : 183.5 kb File Nome : 4100_series.pdf Lingua di insegnamento:

The Model 4100 Series Gas Sensor Module. monitor a variety of toxic and combustible gase. and provide a 4-20 mA DC output signal of ga. concentratio. The Model 4100 Series utilizes semiconductor sensor tech. nology to provide monitoring of gases in the parts per mil. lion (PPM) ranges. These modules operate on 24 VD. input and have a non-linear 4-20 mA DC current loop out. The four gas sensor modules in this series are. 4100-3. Gas Sensor Module 4-20 mA D. How it Work. 4100-3. Gas Sensor Module 4-20 mA D. 4100-3. Gas Sensor Module 4-20 mA D. Semiconductor sensors have a resistance in air that i. 4100-3. Gas Sensor Module 4-20 mA D. affected by oxygen adsorbed on the surface of the sensor. Oxygen atoms capture electrons on the semiconducto. These gas sensor modules can monitor a wide variety o. surface, thereby increasing its resistance. gases. Table A provides a partial list of gases that can b. reliably monitored. If your gas is not on this list, chec. The sensors can be impregnated with dopants such tha. with Sierra Monitor to determine if a 4100 Series gas sen. the sensor.s resistance changes when specific gases dis. sor module is available to meet your requirements. place the adsorbed oxygen. Also, these gas sensor modules can be calibrated wit. the gas of interest or with methane or carbon monoxide. Thus, the user does not have to obtain a special calibra. Nobel Metal Wir. tion gas. Senso. The Model 4100 Series provides a non-linear 4-20 mA out. put signal that can interface with the Sierra Monitor Sensy. Heater Coi. controller or other linearizing controllers / indicators. Curve. and linearizing equations can be provided for a specifi. gas and sensor to enable the operation of these senso. modules with other brand controllers. Specification. Senso. Type. Solid State Metal Oxide Semiconducto. Range. 20-500 ppm or 50-5000 ppm See Table A. Response. 80% of concentration in less than 3 mins. Typical Life. 1-3 years in Normal Service. Detectable Gases And Vapor. Typical List. See Table . Maintenanc. Calibratio. Adjustments. Zero Adjust, Span Adjus. Sensor LED. OFF indicates heater or film is an open circuit. Environmenta. Operating. Temperature -10oC to +40oC (14oF to 104oF. Humidity 5% to 95% non-condensin. Storage. Temperature -55oC to +85oC (-67oF to 185oF. Electrical Dat. Wiring. 3 wire non-isolate. Input Voltage. 14 - 30 VD. Current. 70mA @ 4mA DC loop current. 90mA @ 20mA DC loop current at 24VDC. Power. 2.1 Watt. Output Range. 4-20mA DC Non-linea. Loop Res.. 800 ohms at 28VD. Mechanica. Size. 6.75" x 4" x 3.5" (HxWxD. (17.1 cm x 10.2 cm x 8.9 cm. Material. Cast aluminum epoxy painte. Weight. 2 pounds (0.9 Kg. Classification. Class I Division I Groups C,. Mounting. Connects to a vertical 3/4" electrical condui. Sierra Monitor Corporation 1991 Tarob Ct. Milpitas, CA 95035 (408) 262-6611 800-727-4377 FAX: (408) 262-904. Visit our Web site at: E-Mail: sierra@sierramonitor.co. 4100 Series Gas Sensor Module. ORDERING INFOR...

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