Applications
H2scan’s 2620 Explosion Proof Area Hydrogen Monitor provides hydrogen-specific leak detection and measurement for hydrogen concentrations as low as 4000 ppm and can be scaled to any concentration up to 5% hydrogen by volume, a range representing 10% to 125% of hydrogen’s low flammability limit. The monitor is designed for either ceiling or wall mount. H2scan’s hydrogen-specific sensor technology has no cross sensitivity to other combustible gases, thus eliminating false positive alarms and ensuring safety system reliability.

Battery Rooms
Control Rooms/Analyzer Buildings
Laboratories
Alternative Energy
Hydrogen Cooled Generators and Turbines
Industrial Gas Supply and Hydrogen Production
Furnaces and Manufacturing
Other Applications
Advantages
Highly reliable
Low life cycle cost
Easy to install and operate
Minimal maintenance required
No cross sensitivity to combustible gases
Not vulnerable to poisoning like other detectors
Wide hydrogen-specific detection range
Works in air, oxygen, or inert gas background
Non-consumable solid state technology
No cross sensitivity to combustible gases
Not vulnerable to poisoning like other detectors
Field-configurable settings
Will not saturate with exposure to hydrogen
Configuration Details
Performance

Hydrogen Sensitivity Range: 0.4% to 5.0% hydrogen by volume, 10% to 125% hydrogen lower flammable limit
Response Time: T90 < 60 sec
Ingress Protection: IP64 capable
Calibration Interval: 90 days
Product Life Expectancy: 10+ years
Accuracy: ± (3% of reading + 0.2) percent hydrogen by volume
Interface Options

Input Voltage Range: 90 VAC to 240 VAC
Input Power: 15W
Analog Outputs:
Output Currents
4 mA to 20 mA
0 mA to 20 mA
User-specific mA range
Serial Communication Options: RS232 or RS422
Relay Contacts: Two programmable relays and one fault relay with both normally open (N.O.) and normally closed (N.C.) contacts:
5A/240VAC
5A/ 30 VDC
Dimensions

Width: 13.8 cm (5.4 in)
Length: 19.2 cm (7.5 in)
Depth: 13.0 cm (5.7 in)
Operating Conditions

Operating Temperature Range: -20ºC to 55ºC
Storage Temperature Range: -30ºC to 80ºC
Operating Humidity: 0% to 95% RH (non-condensing)
Calibration Background Gas: Air
Adapter Fittings

1/4 in. Tube for Calibration Gas Connection
Reliable Data for AI and Analytics
Proprietary self-monitoring technology continuously validates sensor performance, delivering clean, accurate data your AI and predictive maintenance initiatives demand. Unlike sensors that fail silently and corrupt your data record, H2scan sensors alert you immediately if performance degrades—ensuring every data point is reliable for both today’s monitoring needs and tomorrow’s analytics.

Certifications