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GG-R
General Description
Installation
The GG-R sensor is a +24 VDC, three-wire, 4/20 mA
sensor for HFC, CFC and HCFC refrigerants which
utilizes proven IR (infrared) sensor technology for
very accurate and reliable leak detection. The GG-R
provides real-time continuous monitoring of ambient
refrigerant concentrations with three available
detection ranges of 0-500, 0-1,000 and 0-3,000 ppm.
The GG-R detects a wide variety of halocarbon gases.
R22, R123, R125a, R134a, R402, R407, R404a R410,
R434, R448, and R507 and many others.
The sensor fault detection circuits are designed to
detect sensor aging and provide a fault indication
if there’s any degradation of the IR source or
optics, along with other critical sensor circuits and
components. The output signal is not affected by
drastic temperature and moisture variations that
occur during washdown, defrost cycles, etc. The circuit
board is sealed in potting compound, completely
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 cleaning crews.
Locating the sensor
One of the most important considerations when
installing GG-R sensors is that they must be easily
accessible for calibration and maintenance.
Since HFC/CFC/HCFC gases are heavier than air, they
tend to accumulate at the floor level. For optimum
leak detection, mount the sensor no higher than 2 feet
off of the floor.
As a general rule of thumb, try to mount sensors
within 30 feet of potential leak sources.
