4
GG-H2S
General Description
Installation
The GG-H2S sensor is a +24 VDC, three-wire, 4/20
mA sensor for hydrogen sulfide which utilizes proven
electrochemical sensor technology for fast and
accurate detection. The 0 – 50 ppm detection range of
the GG-H2S provides real-time continuous monitoring
of hydrogen sulfide concentrations accurately down to
5 ppm without false alarms.
The GG-H2S 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 that
occur during daily process cycles.
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-H2S sensors is that they must be easily
accessible for calibration and maintenance.
Since hydrogen sulfide is heavier than air, it will tend
to accumulate in low-lying areas. Mount sensor near
ground level, typically 18” to 24” from the floor. As a
general rule of thumb, try to mount sensors within 30
feet of potential leak sources.
