Analytical Industries GPR-1600 Series Trace PPB Oxygen Analyzer - Manual (Page 11)

Advanced Instruments Inc.
11
5 Operation
Principle of Operation
The GPR-1600 ppm Oxygen Analyzers incorporates a a variety of ppm range advanced galvanic fuel cell type sensors and is
configured for panel mounting and requires a 7.5x10.8” (T configuration) cutout with 4 holes for the analyzer’s front panel.
Optional configurations include a panel mount (TO configuration) 7.75x7.75” with cutout; 19” bezel for rack mounting either the
T or TO; 12x12x8” wall mount enclosure (GPR-1600W); 18.2x16x10” panel mount configuration (GPR-1600W-306) using the
wall mount enclosure. Contact the factory for additional information on options. All configurations are tested and calibrated by
the manufacturer prior to shipment. The GPR-1600 analyzers and sensors are CE certified and manufactured under a Quality
Assurance System certified by an independent agency to ISO 9001:2000 standards.
Advanced Galvanic Sensor Technology
The sensors function on the same principle and are specific for oxygen. They measure the partial pressure of oxygen from low
ppm to 100% levels in inert gases, gaseous hydrocarbons, helium, hydrogen, mixed gases, acid gas streams and ambient air.
Oxygen, the fuel for this electrochemical transducer, diffusing into the sensor reacts chemically at the sensing electrode to
produce an electrical current output proportional to the oxygen concentration in the gas phase. The sensor’s signal output is
linear over all ranges and remains virtually constant over its useful life. The sensor requires no maintenance and is easily and
safely replaced at the end of its useful life.
Proprietary advancements in design and chemistry add significant advantages to an extremely versatile oxygen sensing
technology. Sensors for low ppm analysis recover from air to ppm levels in minutes, exhibit longer life, extended operating
range of -20°C to 50°C, excellent compatibility with CO
2
and acid gases (XLT series) and reliable quality giving them a
significant advantage over the competition. Other advancements include extending the expected life of our new generation of
percentage range sensors now range to five and ten years with faster response times and greater stability. Another significant
development involves the first galvanic oxygen sensor capability of continuous oxygen purity measurements and expanding the
operating temperature range from -40°C to 50°C.
Oxygen, the fuel for this electrochemical transducer, reacts chemically at the sensing electrode to produce an electrical current
output proportional to the oxygen concentration in the gas phase. The sensor’s signal output is linear over all four ranges and
remains virtually constant over its useful life. The sensor requires no maintenance or electrolyte addition and is easily and safely
replaced at the end of its useful life.