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Resumen del manual
Output range is 0-100% of Lower Explosive Limit (LEL). This detector has minimal maintenance requirements and is Factory Mutual approved for six month calibration intervals. Internal, continuous self-diagnostics automatically detect and alarm any fault problems. The 5100-02-IT can be used as a 4-20 mA component or as a Modbus RTU node. For higher level system capability the module can interface directly to Sierra Monitor’s Sentry Controller enabling system level Modbus serial communications, area and zone alarm management, extensive system diagnostic features, WebServer interface, and multiplexing sensor connections. 180 Day Calibration Interval Factory Mutual (FM) Approval for performance, electrical safety and environmental parameters including Class I, Div. 1, Groups B, C, D and Class I, Zone 1, Group IIC, IP66. With a NEMA-4X enclosure standard, approved multiplexing, and approved six month calibration interval, cost of ownership is minimized at the acquisition, installation and operating stages. How It Works Catalytic Bead gas sensors detect gas by comparing the resistance of two heated elements. One element is catalytic to enhance the burning of combustible gases, the other element is passive. Electronic circuits are used to compare the change in the catalytic bead resistance relative to the passive bead. The relative change is calibrated to determine the concentration of the gas of interest. Features ¦ Six-month calibration interval ¦ Non-intrusive calibration ¦ Network-compatible with Modbus, 4-20 mA, Sentry bus, HART and relay interface ¦ FM Approved for Performance and Hazardous Areas ¦ SIL-2 Certified ¦ Local scrolling display Benefits Longest rated and FM-approved calibration cycle for any catalytic-bead gas detector - reduced maintenance Able to calibrate module without declassifying the area Easily meets users needs for access to critical plant safety information Proven and approved for installation in areas where combustible gases are located Meets long term reliability design standards Ease of calibration and easy access to gas concentra tion, relay and alarm status and diagnostics Sierra Monitor Corporation 1991 Tarob Ct. Milpitas, CA 95035 USA (408) 262-6611 (800) 727-4377 Fax: (408) 262-9042 Visit our website: E-mail: sales@sierramonitor.com IT Combustible Gas Sensor - Catalytic Bead Specifications: Sensor type: Performance: Catalytic Bead Operating Range: Ambient Temp Range: -40o to 176oF (-40o to 80oC) Range: 0-100% LEL Relative Humidity: 0-99% Repeatability: +/-1% LEL Construction: Response time: <12 sec to 60% full scale Dimensions: Calibration freq: 180 days (A1) 6.9 x 5.7 x 3.9 in. (17.5 x 14.5 x 9.9 cm) Accuracy: +/-1% for 0-50% LEL range (A2) 7.2 x 5.0 x 4.8 in. (18 x 13 x 12 cm) +/-2% for 51-100% LEL range (S1 & S2) 7.5 x 5.0 x 4.4 in. (19 x 13 x 11 cm) Output: Display: Fixed and Scrolling LED Weight: (A1) 3.4 lb. (1.5 Kg) Signal Output: Sentry digital bus (A2) (S1 & S2) 5.4 lb. (2.5 Kg) 7.2 lb. (3.3 Kg) Analog 4-20 mA Housing: Epoxy coated aluminum or 3-wire Non-Isolated 316 Stainless Steel 4-wire Isolated Hazardous Area Serial RS-485 Modbus RTU Classification: ...
Otros modelos de este manual:Detector de incendios - Catalytic Bead IT Series (98.59 kb)