Key Features
- Explosion-proof enclosure for classified areas
- Hydrogen selective electrochemical sensor technology
- 0-2,000 ppm and 0-10,000 ppm ranges
- Electronics potted to eliminate internal corrosion
- Industry standard 24VDC, linear 4-20 mA output
- Operating temperature from -4°F to +122°F
- Accurately monitor H2 levels for personnel protection
- No false alarms from interference gases
- Real-time continuous monitoring for early leak detection
The GG-H2-EC-EXP is designed for
detection of potentially explosive
hydrogen gas in hazardous areas. The
standard detection range of 0-10,000
ppm provides accurate concentra-
tions and the ability to react before
the levels reach the LEL. An alternate
range of 0-2,000 ppm is also available
for other applications.
The GG-H2-EC-EXP utilizes a proven hydrogen specifc electrochemical sensor
for detecting hydrogen gas concentrations. No false alarms due to cross-sensitivities from other gases, and no false
alarms from temperature or humidity
fluctuations.
The GG-H2-ECEXP provides an industry
standard linear 4/20 mA output signal
proportional to ppm concentration of
hydrogen. Long sensor life with minimal span adjustment can be expected
in most battery room applications. The
sensor is designed for simple calibration and the sensor head is easily field
replaceable.
Applications
- Battery Charging Rooms
- Perimeter Monitoring
- Steel Industry
- Heat Treatment
- Refineries
- Sea Vessels
Benefits
- Low cost explosion protection
- No false alarms from interference gases
- Simple operation & calibration
The International Fire Code section 608.6.1 states “the ventilation
system shall be designed to limit the
maximum concentration of hydrogen to
1% (25%LEL) of the total volume of the
room” or “continuous ventilation shall
be provided at a rate of not less than 1
cfm per square foot of floor area in the
room”.
Hydrogen gas is much lighter than air
and will tend to accumulate in areas
by the ceiling. For optimum detection,
mount the sensor at a height not lower
than a few feet from the highest point
in the room, keeping accessibility in
mind. As a general rule of thumb, try
to mount sensors within 30 feet of
potential H2 sources.
The GG-H2-EC-EXP is useful for ventilation activation, and also for alarm
outputs such as horn/strobes, phone
dialers and other alarm functions.
Typical sensor element life is 3 years,
with minimal cross-sensitivity to
other gases. Field replaceable sensor element keeps long term maintenance simple and low cost. Every
circuit board is potted to completely
eliminate corrosion to the electronic
components and copper tracing.
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