Combustible Gas Sensor utilizes catalytic bead technology.

Sierra Monitor Corporation Feb 09, 2006

Press Release Summary:

Suited for range of industries, Model 5100-02-IT features integral LED display with magnet-operated menu to indicate gas status. It provides FM-approved, 180-day calibration interval, and interface via 4-20 mA, Modbus RS-485, or Sentry bus. Alarm relays may be supplemented by higher amperage control relays in same enclosure. Internal, continuous self-diagnostics automatically detect and alarm any fault problem. Output range is 0-100% of lower explosive limit.

Original Press Release:

Sierra Monitor 5100-02-IT Combustible Gas Sensor Module

Information Technology (IT) at the component level for safety and instrumentation engineers

January 25, 2006 - Sierra Monitor Corporation, Milpitas, California has proudly introduced the Model 5100-02-IT, the best of class catalytic bead Combustible Gas Sensor Module. Backed by 25 years of gas detection experience, and approved by Factory Mutual for performance, electrical safety and environment parameters, the 5100-02-IT from Sierra Monitor stands ready to manage gas risks in a range of industries.

The 5100-02-IT sensor module provides interface via 4-20 mA, Modbus RS-485 or Sierra
Monitor's proprietary Sentry bus. This is the first catalytic bead module to provide the user with FM approved 180 day calibration interval to minimize maintenance requirements. As a key member of the powerful Sierra Monitor IT Series family of gas sensor modules, the 5100-02-IT is a standalone module loaded with the features required to provide the due diligence expected in hazardous areas including:
o 180 day calibration interval (best in the industry) for reduced maintenance costs
o FM approved for performance and area safety requirements including Group B
o Fastest response time, highest accuracy, and specifications unmatched in the industry.
o Integral LED display magnet operated menu for display of gas status and easy, nonintrusive calibration
o 4-20mA, Modbus RTU and Sentry digital bus output to meet specific application
communications requirements
o Integral alarm relays may be supplemented by higher amperage control relays in the
same enclosure
o Remote sensor option and remote alarm reset enables the 5100-02-IT to meet typical
application requirements

The 5100-02-IT utilizes the proven, reliable, catalytic bead technology to monitor for
combustible gases (methane and others). 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 problem. The 5100-02-IT can be used as a 4-20 mA component or 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, LanServer interface, and multiplexed sensor connections.

About Sierra Monitor Corporation
Sierra Monitor Corporation manufactures and integrates hazardous gas monitoring systems for industrial safety applications. With more than 25 years experience and over 14,000 installations of fixed gas monitoring systems Sierra Monitor is a technology leader in the industry. The company's Sentry Gas Risk Management System leads the industry in configuration flexibility, high reliability, and useful data
collection and communication. Sierra Monitor's accomplishments include the first digital bi-directional multi-drop communication bus between sensors and controller, the first serial Modbus communication output for plant-wide systems, the first interface to third party legacy sensors and devices and the first cost-effective web-based graphical system for monitoring plant-wide hazardous gas conditions.

For further information contact Stephen R. Ferree, Vice President of Marketing, Sierra Monitor Corporation, 1991 Tarob Court, Milpitas, CA 95035, 408-262-6611, toll free: 800-727-4377, EMail: sferree@sierramonitor.com