The HGD-3000i H₂ 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. The HGD-3000i 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.
Smoke Detection
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 build-up 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.
Key Features
- Automatic Operation and Continuous 24/7 Monitoring
- Highly sensitive and stable solid state hydrogen sensor
- Sensitive photoelectric smoke detector module
- Internal thermostat for automatic exhaust fan control at 40°C (104°F) with ±5° adjustable range
- Save insurance costs – reduce insurance premiums when placed in battery charging rooms
Specifications
| Detection | Hydrogen Gas, Smoke, Temperature, Intrusion |
| Alarms | 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 |
| Relay Connections | RJ45, Punch-Down Block |
| 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 |
| Compliance | 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 |
| Dimensions | 178 x 120 x 55 mm (7 x 4.75 x 2.5 in) |
Resources & Support
FAQs
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-3000i 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-3000i 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-3000i 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
How does the detector connect to the optional breakout box?
The breakout box connects to the detector box via a standard style 8-connector, 8-contact telephone-type (RJ45) modular cable.
What standards does the HGD-3000i satisfy?
Beyond making your facility environment safer for employees, the HGD-3000i 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
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