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LOX-O2 UV Flux 25% Oxygen Smart Sensor

UV Flux 25% Oxygen Smart Sensor - CO2 Meter
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The LOX-O2 UV Flux 25% Oxygen Sensor (formerly known as OX-0052) measures ambient oxygen levels using the principle of florescence quenching by oxygen. With patented technology, this sensor provides low power and a longer lifespan than EC and galvanic sensors.


  • Internally temperature compensated, no cross sensitivity
  • Direct communication to UART, no signal conditioning circuitry required
  • MX Board includes Barometric Pressure, Temperature and %RH Sensors
  • Easy Integration; Compact & Low Power


  • LOX-O2 Sensor Only  for integration into high-volume OEM products.
  • CM-42950 MX Board  Same functionality as the development kit without USB cable or software.
  • CM-42951 Development Kit  Easy to use, simply plug the MX Board into your PC via the included serial UART to USB cable. Use our free GasLab® software to measure and graph oxygen, barometric pressure, temperature, and % relative humidity. 


  • Measuring Gas: Oxygen
  • Measurement Range: 0.1 to 25% O2
  • Sensing Method: Fluorescence quenching by oxygen
  • Measurement Interval: 1 Sample/second
  • Response Time: < 60 Seconds
  • Warm-Up Time: < 60 Seconds at 72°F (22°C)
  • Accuracy: Better than 2% at full scale
  • Resolution: 0.10% / 0.1mbar
  • Temperature Accuracy: +/- 2 degrees C
  • Operating Temperature: -30°C to +60°C
  • Barometric Pressure Range: 500 to 1200 mbar
  • Lifetime: > 5 years

Electrical / Mechanical

  • Voltage: 4.5 - 5.5 VDC
  • Current: < 6mA (streaming @ 1 Sample/sec), < 17mA Peak
  • Interface: UART or analog


  • 90 days - See CO2Meter Terms and Conditions.

Free Easy-to-use GasLab® Software 

This device uses GasLab® software for setup, calibration, data logging, and real-time data analysis. GasLab® makes it easy to export data into a .CSV file that can be imported into any industry-standard software or spreadsheet. GasLab® runs on Windows XP or higher, and free to use with our products.

Download Latest Software Here

System Requirements for Data Logging or Changing Defaults

  • Windows XP SP2 or newer
  • Microsoft .Net 3.5 Runtime Libraries. 

Gas Sensor Development Kit -  designed to seamlessly integrate with CO2Meter select gas sensors and provides customers with built-in pins for an easy drop-in solution. Also includes our free Gaslab data logging software.

Micro-Pump Kit includes all the tools you need to utilize the tube-cap adapters as part of a sampling sensor system.

Nafion Tubing is a highly selective, semi-permeable membrane to water vapor. If gases inside Nafion tubing are wetter than gases surrounding the tubing, drying will occur. If the surrounding gases are wetter, humidification will occur.

Micro Gas Sampling Pumps provide a constant flow of air across the sensor with a tube cap - perfect for bench-top testing of sensors for closed-loop sampling applications.

  • Data Sheets

  • Manuals

  • Technical Documents

  • Videos

  • Additional Resources

  • Case Studies

Customer Reviews

Based on 5 reviews
Andrew Duff
OX-0052 Sensor

Very good fast service. Thank you

Yohannes Bogale

UV Flux 25% Oxygen Smart Sensor

Phil Chivers
Received, but not yet utilized

We received them. However, we have not fully developed the product we are going to use them with. They have worked on our prototypes, so we are expecting to have any issues with them.

Tony Hickey
UV Flux 25% Oxygen Smart Sensor

Looks great had it working right away. Really well priced and will likely buy more.

Tim Cabbabe
Does Exactly What it Should

Very sensitive meter that "just works" right out of the box. Simple to use, and I expect a long life from it unlike e-chem sensors. Make sure you use 3.3v logic and you'll be streaming ASCII in no time.

"Easy to install, easy to set up, and easy calibration - just what I was looking for."

- Phillip Farrar
Water Plant Superintendent

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