HGD-3000 Hydrogen Gas / Smoke Detector with Intrusion Alarm
Model # HGD-3000-or-HGD-3000i
The Eagle Eye HGD-3000 Hydrogen Gas and Smoke Detector with (optional) Silent Intrusion Alarm is designed for unattended battery installations or remote shelters containing gassing lead acid batteries and charging systems - most commonly found in the telecommunications and utility sectors. Other applications for hydrogen gas detection include forklift and golf cart charging areas, data centers, mission critical facilities, fire departments, and other battery charging rooms.
Lead-acid batteries on charge emit hydrogen gas after reaching the 80% recharge point. When mixed with enough air, hydrogen becomes a highly flammable gas that can ignite easily with just a spark, destroying equipment and harming personnel. The lower explosive level (LEL) for hydrogen is 4.1% by volume. The dangers of hydrogen gas explosion are eliminated by using the hydrogen gas detector. Hydrogen is colorless and odorless, the lightest of all gases and thus rises. The HGD-3000 hydrogen gas sensor should be installed at the highest, draft-free location of the room where hydrogen gas would accumulate.
The HGD-3000 hydrogen gas detector comes standard for AC power supply: 85 – 265 VAC, 50/60 Hz. Custom Options are available for DC power supply (17 – 60 VDC or 12VDC).
The HGD-3000 Has Three Main Functions:
Hydrogen Gas Detection
Attach the HGD-3000 to the wall, ceiling, or optional junction box using the mounting holes at the top and bottom of the detector box. The HGD-3000 will turn on an exhaust fan when hydrogen gas levels reach 1% and will alarm at 2%. This alarm consists of a local 80db horn, a flashing red LED, and a dry contact switch closure for remote alarming.
The photoelectric smoke sensor detects minute combustion products from smoldering wire insulation, battery cases, and other material. When smoke is detected, a distinctive alarm is emitted from the 80db horn and a separate dry contact switch is activated. At this time, the exhaust fan is inhibited in order to deny the fire increased oxygen from outside air.
Temperature, Loss of Power, & Intrusion
During normal operation and in the absence of an alarm condition, an internal thermostat will turn on the exhaust fan at a preset temperature to reduce heat buildup in the room. Loss of power to the unit will also generate a dry contact alarm. Additionally, an optional infrared intrusion alarm will trigger a silent dry contact switch.
Properly installed, the HGD-3000 hydrogen gas detector is compliant with The National Electric Code (NEC) Section 480.9 (A) for ventilation of battery rooms. This is also the specified requirement for solar or wind generated power Battery Rooms. The gas detector is also compliant with The National Fire Protection Association, NFPA 2 Hydrogen Technology Code, which is more stringent. The minimum system consists of an H2 Hydrogen Gas Detector, an H2 Battery Room Forced Ventilator with Positive Airflow Shut Off, a remote firefighter’s shutdown capability, a backflow damper, and a 2% monitored alarm. This unit complies with NEC 501.125. (B), 501.105 (1)-3 and is designed for use in Class 1 Div. 2 Group B hydrogen containing classified areas.
Optional accessories for the HGD-3000 hydrogen gas detector include a steel junction box for hard-wiring to the wall or ceiling, a remote box for placement at eye level or in another room, and a telephone-type modular cable for connecting the remote box to the HGD-3000 detector. If you do not need the smoke detection, temperature, loss of power, or intrusion features, please see our HGD-2000 Hydrogen Gas Detector.
- Technical Specs
|Measurement Units:||Hydrogen Gas, Smoke, Temperature, Intrusion*|
|Alarm Relay:||10A Relay for Exhaust Fan,|
1A Relay for Loss of Power,
1A Relay for Smoke Alarm,
1A Relay for Intrusion,
1A Relay for 2% H2 Concentration
|Mounting:||(4) 4.5 mm (3/16 in) screws|
|Operating Environment:||Temperature: -10 – 40 °C (14 – 104 °F)|
|Power Requirements:||Standard: 85 – 265 VAC, 50/60 Hz|
Optional: 17 – 60 VDC or 12VDC
|Dimensions:||178 x 120 x 55 mm (7 x 4.75 x 2.5 in)|
|Safety Standard:||IEEE Standard 450; National Protection Agency (NFPA) Article 64; NFPA 2: Hydrogen Technologies Code; Uniform Building Code (UBC) Section 6400; National Electric Code (NEC) Section 480.9 (A); NEC 501.125 (B); NEC 501.105 (1)-3 - use in Class 1 Division 2 Group B.|
|Options:||*Available with or without Alarm Intrusion|
What is the life expectancy of the hydrogen gas sensor?
The sensor is rated for 5 years; after this time the sensor may start to become overly sensitive to gases. We recommend replacement or refurbishment of the sensor at this time. Changing the sensor is simple, quick, & can be done while online.
What are the limitations of the smoke and infrared intrusion alarm?
The IR sensor has a range of 9 meters and covers 30 degrees. If mounted in a large area, the sensor should be aimed towards a door, or at the equipment being protected.
Do the additional features of the HGD-3000 hydrogen gas detector decrease the life expectancy of the sensors or boards?
No, the additional features do not negatively impact any functions of the HGD-3000 hydrogen gas detector.
Does the HGD-3000 require additional maintenance and calibration after installation?
No, as described above the sensor is rated for 5 years. During this period the HGD should be maintenance free.
Is the HGD-3000 rated explosion proof?
No, the unit is not rated explosion proof. The intrinsic design of the unit is to prevent and explosive atmosphere from forming by alarming and switching proper ventilation services on.
Does the unit alarm to an external building control system?
Yes, the unit has 10A dry contact relays for smoke, intrusion, 2% alarms
What standards does the HGD-3000 satisfy?
Beyond making your facility environment safer for employees, the HGD-3000 fulfills the following standards: IEEE Standard 450; National Protection Agency (NFPA) Article 64; NFPA 2: Hydrogen Technologies Code; Uniform Building Code (UBC) Section 6400; National Electric Code (NEC) Section 480.9 (A); NEC 501.125 (B); NEC 501.105 (1)-3 - use in Class 1 Division2 Group B
- Compliance with IEEE Std 450
- Compliance with National Fire Protection Agency (NFPA) Article 64
- Compliance with Uniform Building Code (UBC) Section 6400
- Automatic Operation and Continuous 24/7 Monitoring
- High Sensitivity and Stability
- Long Life-Span for Reliable Monitoring
- 12V DC Operation Voltage
- Inexpensive protection for equipment and personnel
- Save electricity, heating, and air conditioning costs by not continuously running exhaust fans
- Save insurance costs - reduce insurance premiums when placed in battery charging rooms
- Two-Year Warranty
- 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
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