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O2A-100 Paramagnetic Oxygen Analyzer main view

Paramagnetic Oxygen Analyzer

The O2A-100 Analyzer is a real-time monitor of oxygen concentration in a stream using the methodology of paramagnetic detection. Engineered to be compact and simple to use.

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Automated Oxygen Analysis

  • Fast, continuous reading
    Response from the analyzer is within seconds
  • No recalibration required
    Measurement is validated using instrument air
  • Compact Design
    Can be integrated with other systems in one enclosure

Cost of Ownership

  • Low Maintenance
    No maintenance required, only validation with instrument air is necessary
  • Solid state instrument
    Outlast competing models due to lack of moving parts


The O2A-100 can be used to monitor oxygen in the following processes:

  • Continuous emissions monitoring system (CEMS)
  • Stack applications
  • Flue gas
  • Air quality monitoring


O2A-100 takes advantage of the unique paramagnetic susceptibility of oxygen. A magnetic field is produced in the analyzer. A suspended assembly is influenced by a magnetic field. The amount that the assembly is influenced by the magnetic field is directly proportional to the oxygen concentration in the gas. A directly proportional electrical current is incorporated to read the oxygen concentration.

Technical Drawing

View in separate window OMA-406R drawing


Measurement Principle Paramagnetic sensor
Sample Medium Gas (Process will need to be filtered to less than 3 microns)
Analyzer Calibration Factory calibrated to specific oxygen ranges
Reading Verification Simple verification with air or sample standard
Human Machine Interface Applied Analytics industrial controller with touch screen display
Enclosure 19" rack-mounted analyzer
Measuring Parameters
Repeatability ±1% of full scale
Accuracy ±0.5% of O2 reading
Sample Parameters
Sample Temperature 0°C to 65°C (32°F to 149°F)
Sample Pressure ±1 barg (14.5 psig)
Ambient Conditions
Analyzer Environment Indoor
Ambient Temperature Standard: 0°C to 40°C (32°F to 95°F)
Physical Specifications
Dimensions 7.09" H x 19" W x 9.78" D (180mm H x 483mm W x 248mm D)
Weight 30 lbs. (14 kg)
Utility Requirements
Electrical Requirements 100-240 VAC
Outputs/ Communication
Outputs 1x galvanically isolated 4-20mA analog output
1x fault relay


PDF — English
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