Advanced Instruments Inc.
5 Operations
Principle of Operation
The GPR-IN190 PPM Oxygen Analyzer incorporates several advanced galvanic fuel cell type sensors for parts-per-
million PPM oxygen analysis. This model is configured for panel mounting and requires a 6”W x 3”H cutout with 4
holes for the studs located on the back side of the analyzer’s front panel.
Optional mounting configurations include a 19” rack or wall mount enclosure with or without a sample system.
Contact the factory for additional information on options. All configurations are tested and calibrated by the
manufacturer prior to shipment.
The GPR-IN190 series analyzers and sensors conform to CE standards and are manufactured under a Quality
Assurance System, certified by an independent agency, in accordance with ISO 9001:2008 standards.
Advance
Galvanic
Sensor
Technology
All galvanic sensors function on the same principle and are specific to oxygen. They measure the partial pressure of
oxygen ranging from low PPM to 100% levels in inert gases, gaseous hydrocarbons, helium, hydrogen, mixed gases
and acid gas streams.
Oxygen, the fuel for this electrochemical transducer, diffuses into the sensor and
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 measuring 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 the 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, offer
extended operating range of -10°C to 50°C, have excellent compatibility with CO
2
and acid gases (XLT series
sensors) and reliable quality thus giving the user a significant advantage over other competitors. Other
advancements include extending the expected life of our new generation of percentage range sensors to five to ten
years with faster response times and greater stability. Another significant development involves the first galvanic
oxygen sensor capable of measuring oxygen purity continuously and expanded operating temperature range from -
40°C to 50°C. Consult factory for selection of sensors for your specific applications.
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