4
GG-H2-EC
General Description
Installation
The GG-H2 sensor is a +24 VDC, three-wire, 4/20
mA sensor for hydrogen which utilizes proven
electrochemical sensor technology for fast and
accurate detection. The GG-H2 provides real-time
continuous monitoring of hydrogen concentrations
accurately without false alarms. Two ranges are
available: 0-2,000 ppm and 0-10,000 ppm H2 (0-1% or
0-25%LEL)
The GG-H2 provides an industry standard linear 4/20
mA output signal compatible with most gas detection
systems and PLCs. The output signal is not affected
by drastic temperature and moisture variations, or by
other atmospheric variations.
The transmitter circuit board is sealed in potting
compound, protecting sensitive electronic
components and copper tracing from corrosion. The
specially vented chemical-resistant polycarbonate
enclosure protects the sensor from accidental
damage, weather and direct hose-hits from clean-up
crews.
Locating the sensor
One of the most important considerations when
installing GG-H2 sensors is that they must be easily
accessible for calibration and maintenance.
Since hydrogen gas is lighter than air, the sensor
should be located close to the ceiling. This is where
hydrogen gas will typically accumulate. This mounting
location will usually provide the best personnel and
property protection.
As a general rule of thumb, try to mount sensors
within 30 feet of potential leak sources.
