The H2scan 2620 explosion proof area hydrogen monitor provides detection and measurement of hydrogen concentrations from 4000 ppm up to 5% by volume, ensuring safety with no cross sensitivity to other gases. It operates in temperatures from -20°C to 55°C and has a response time of less than 60 seconds, with a lifespan of 10 years and an accuracy of ±(3% of reading + 0.2). The monitor is designed for flexible installation and features multiple output options for communication and alerts.

1. HY-ALERTA 2620 Explosion Proof Area Hydrogen Monitor
HY-ALERTA
TM
is a registered Trademark of H2scan 27215 Turnberry Lane, Unit A, Valencia CA., 91355
Specifications subject to change without prior notice Tel: 661-775-9575, Fax: 661-775-9515
90000104 R0 Email: sales@h2scan.com, Website: www.h2scan.com
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
¾” Union Tee Compression
Description
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.
Performance
Hydrogen Sensitivity Range:
0.4% to 5% 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)
Depth: 13.0 cm (5.7 in)
Certifications
0359
2620 UL 508, 1203
USC – Class I, Division 1, Groups B, C,
and D Hazardous (Classified)
II 2 G Ex d IIB + H2 T4 Gb
Remote UL 913
CAN/CSA C22.2 No. 157-92
Ex ia IIC T4 Ga
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