To Order Call Toll Free: HGD-2000 Hydrogen Gas DetectorModel # HGD-2000 Product Overview The HGD-2000 Hydrogen Gas Detector allows the user to monitor hydrogen gas buildup in storage rooms and facilities that house batteries. The HGD-2000 is easy-to-use and easy-to-install. The detector has a terminal block for connection to single-phase AC power source and two internal relays. The relays can be used to switch a remote exhaust fan and/or alarm on and off. If the concentration of hydrogen gas in the air surrounding the sensor reaches 1% by volume, the yellow LED will light and the 1% internal relay will close. A four second delay prevents false activation. If the concentration reaches 2%, the red LED will flash, the internal 80 db warning alarm will sound, and the 2% Features Gas Detection GD~SERIES 29 • Automatic Operation and Continuous 24/7 Monitoring • Long Lifespan for Reliable Monitoring • High Sensitivity and Stability • Inexpensive protection for equipment and personnel • Save insurance costs - reduce insurance premiums when placed in battery charging rooms HGD-2000 (2) Form C Contacts Control Box Applications • Utilities and Power Plants • UPS Power Systems • Fuel Cell Test Stations • Nuclear Waste Reforming • Hydrogen Refueling Stations • Fire Department • Battery Suppliers • Battery Charging Rooms • Motive Power • Golf Cart Technical Specifications Ordering Information Kit Includes • User Manual • Optional: Control Box and cable for remote alarm control and display • Optional: Junction Box