Crowcon Fgard H2
Fgard H2 is a multi-spectrum IR flame detector specifically designed for detecting hydrogen flames.
It offers ultra-fast and accurate detection, even in demanding industrial environments where hydrogen’s colorless and nearly invisible flame poses a serious safety risk.
Unlike traditional flame detectors, Fgard H2 is optimized for hydrogen detecting flames in less than 4 seconds from up to 40 meters away.
Key Features:
- Ultra-fast response: Detects hydrogen flames from up to 40 meters in 2–5 seconds
- Hydrogen-specific design: Ideal for applications where traditional detectors struggle to identify hydrogen flames reliably
- Heated optics: Prevents fog, ice, and water buildup – operates in all weather conditions
- Automatic optical self-test: Monitors lens and electronics condition without manual testing
- Industry-leading warranty: 5-year factory warranty on hydrogen flame detection
Technical Specifications:
- Response time: 2–5 seconds (typical)
- Detection range (H₂): 40 m (36″ hydrogen flame plume)
- Power supply: 24 VDC (18–32 VDC)
- Outputs: 0–20 mA, HART®, relays (alarm and fault)
- Housing material: Copper-free aluminium or 316 stainless steel
- Certifications: IP66, NEMA 4X, SIL 2, ATEX, IECEx, FM
- Operating temperature: -76°C to +85°C
Typical Applications:
- Hydrogen production and storage
- Safety monitoring at hydrogen refueling stations
- Hydrogen-powered trains, buses, and ships
- Hydrogen compressors and generators
- Petrochemical industry
- Pharmaceutical, semiconductor, and aerospace sectors
- Fertilizer and refrigeration production




