The HGD-4000 H₂ Hydrogen Gas Detector allows the user to monitor hydrogen gas buildup in storage rooms and facilities that house batteries. The HGD-4000 is easy-to-use and easy-to-install. The detector has color-coded wires for connection to single-phase AC power source and two internal alarm 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, and the 2% internal relay will close.
Intrinsically Safe
This HGD-4000 model is designed to be intrinsically safe and meets the requirements for either Class I Division I or Class I Division II areas. The NFPA also has a new system that uses Zones in Chapter 505. This detector also meets the requirements for Zone 0 AEx ma ia IIC T6.
Key Features
- Automatic operation and continuous 24/7 monitoring
- LED status display
- Reliable, highly sensitive, highly stable
- Intrinsically safe operation
- Pre-calibrated sensor
- Simple installation
- Long operating life
- Protects against Hydrogen explosions
- Inexpensive protection for your property and employees
- Decreases electricity costs as a result of controlled exhaust fan operation
- Insurance premium reduction may be realized
- Reduces air conditioning and heating costs as a result of controlled fan operation
Specifications
| Alarm Relay | (1) 10A Form C Relay, (1) 200mA Solid State Relay |
| 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 |
| Compliance | IEEE Standard 450; National Fire 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 I Division I or Class I Division II areas. |
| Dimensions | 146 x 83 x 60 mm (5.75 x 3.25 x 2.375 in.) |
Resources & Support
Product Literature
Video Resources
FAQs
What does “intrinsically safe” mean in the context of the Eagle Eye Power Solutions HGD-4000?
“Intrinsically safe” means the HGD-4000 is engineered to operate in hazardous environments by limiting electrical and thermal energy to levels that cannot ignite H₂ hydrogen gas. It is certified for use in areas with explosive gas risk, such as battery rooms and confined spaces.
Where is the HGD-4000 typically installed?
The HGD-4000 is designed for use in battery rooms, data centers, telecom sites, and industrial environments where hydrogen gas may accumulate due to battery charging or system faults. Its compact design allows for wall or ceiling mounting.
How does the HGD-4000 alert users to hydrogen gas buildup?
The unit includes visual LED indicators and a built-in buzzer. It can also be integrated with external alarms or building management systems using relay outputs.
Does the Eagle Eye Power Solutions HGD-4000 meet any compliance or regulatory standards?
Yes. The HGD-4000 is certified for intrinsic safety and supports compliance with safety codes such as NFPA, OSHA, and IEEE standards for battery rooms and hydrogen monitoring.
How is the HGD-4000 powered?
The HGD-4000 H₂ hydrogen detector operates using low-voltage DC power, typically 12–24VDC. It is designed to work with UPS and DC systems common in critical power environments.
What’s the typical maintenance for the HGD-4000?
Minimal. Calibration is recommended every 6–12 months depending on the environment. Eagle Eye Power Solutions offers calibration services.
Can Eagle Eye Power Solutions HGD-4000 be networked with other safety equipment?
Yes, the HGD-4000 includes relay outputs and optional RS-485 communication, allowing integration with monitoring systems, alarms, or SCADA/BMS platforms.
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