Sierra Monitor Corp.
, Milpitas, CA, offers the Model 5100-02-IT FM-approved, catalytic-bead, combustible gas sensor module. The sensor module provides an interface via 4–20 mA, Modbus RS-485, or the company's proprietary Sentry bus. Features include an integral LED display, magnet-operated menu for gas status display and calibration, integral alarm relays, a remote sensor option, and remote alarm reset. The sensor monitors for combustible gases over the 0%–100% LEL range.