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MIJC sierra monitor corporation Combustible Gas Sensor Model 5100-02-IT Information Technology (IT) at the component level! A catalytic bead Combustible Gas sensor module with the brilliance to provide Sentry, 4-20 mA or Modbus Output. A stand alone module with the intelligence to provide integral alarms. A base model already loaded with features you need. A gas detector with a Sierra Monitor pedigree, Factory Mutual approved and ready to Manage Your Gas Risk. The 5100-02-IT Combustible Gas Sensor Module is a key member of the powerful Sierra Monitor IT Series family of gas sensor modules. The 5100-02-IT provides the fea- tures needed by safety and instrumentation engineers in- cluding: Integral LED display Non-intrusive calibration • Integral alarm relays—High,Low,Trouble • 180 day calibration interval • 4-20 mA output • Modbus RTU RS-485 interface • SMC Sentry digital bus interface • Remote alarm reset capable Factory Mutual(FM)Approval for performance,electrical Optional remote sensor safety and environmental parameters including Class I,Div. • Optional control relay pack 1,Groups B,C,D and Class I,Zone 1,Group IIB+H2 IP66. • Auxiliary connector option With a NEMA-4X enclosure standard,approved multiplex- Model 5100-02-IT utilizes the proven, reliable, catalytic ing, and approved six month calibration interval, cos of bead technology to monitor for combustible gases(meth- ownership is minimized at the acquisition,installation and ane and others).Output range is 0-100%of Lower Explo- operating stages. sive Limit(LEL).This detector has minimal maintenance How It Works requirements and is Factory Mutual approved for six month calibration intervals. Internal,continuous self-diagnostics Catalytic Bead gas sensors detect gas by comparing the automatically detect and alarm any fault problems. The resistance of two heated elements. One element is 5100-02-IT can be used as a 4-20 mA component or as a catalytic to enhance the burning of combustible gases,the Modbus RTU node. For higher level system capability the other element is passive. Electronic circuits are used to module can interface directly to Sierra Monitor's Sentry compare the change in the catalytic bead resistance Controller enabling system level Modbus serial communi- relative to the passive bead. The relative change is cations,area and zone alarm management,extensive sys- calibrated to determine the concentration of the gas of tem diagnostic features, LanServer interface, and multi- interest. plexing sensor connections. Features Benefits ® Local display and relays Ease of calibration and easy access to gas concentration, relay status and diagnostics ® Non-intrusive calibration Able to calibration module without declassifying the area ® FM Approved, Class 1, Div. 1, Group B, C, D. Approved for installation in most areas where NEMA 4X rated for-400 to 176°F areas combustible gases are located ® Six months calibration Longest rated and approved calibration cycle for any catalytic bead gas detector- reduced maintenance ® Flexible Modbus, 4-20mA, Sentry bus, relay interface Easy to install in a variety of field applications plus easy to obtain critical safety information wherever needed Upgradeable relays Designed to meet typical application specifications Sierra Monitor Corp. 1991 Tarob Court Milpitas,CA 95035 USA(408)262-6611 (800)727-4377 Fax: (408)262-9042 Visit our website: www.sierramonitor.com E-mail: sierra@sierramonitor.com