UV Flux 25% Oxygen Sensor

UV Flux 25% Oxygen Sensor
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For large quantities, please contact Sales@CO2Meter.com

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  • 0.1 to 25% O2 Sensor
  • Does Not Require Calibration
  • Up to 5 Year Lifespan

This 25% oxygen, factory calibrated, optical sensor measures ambient oxygen levels using the principle of fluorescence quenching by oxygen. This unique patented process allows us to produce an oxygen sensor that benefits from low power, traditionally associated with electrochemical sensing devices, while providing a much longer lifetime due to the non-depleting sensing principle.


  • Low drift
  • RoHS compliant
  • Extended temperature range compared to electrochemical sensing devices
  • Low in cost
  • Factory calibrated
  • Measures temperature and Pressure (if selected)
  • Small and compact
  • Maintenance free

The sensor reports both oxygen pressure (ppO2 in mbar) and O2 concentration (vol. % O2), the latter being calculated from the total gas pressure and the ppO2. This means that the sensor will continue to read the correct oxygen concentration, even during rapid pressure changes. As for the temperature measurement, the sensor is able to transmit the total gas pressure to the host via the two-wire communications interface.


  • Measuring Gas: Oxygen
  • Measurement Range: 0.1 to 25% O2
  • Life Time: > 5 years
  • Sensing Method: Fluorescence quenching by oxygen
  • Sampling Rate: 1 Sample/sec
  • Temperature Range: -30 to +60°C


  • CM-0201: Sensor on PCB for ease of mounting
  • CM-0202: USB Software Development Kit for rapid application development with our free Gaslab software for PC.
  • CM-0203: Tube Cap Adapter changes sensor from diffusion to sampling sensor


  • 90 Days

CO2 Meter Oxygen Sensor Datasheet Data Sheet (pdf)

CO2 Meter Oxygen Sensor Datasheet Manual (pdf)