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LOX-O2-F UV Flux 25% Oxygen Flow Through Sensor

LOX-02-F UV Flux  25% Oxygen Smart Flow Through Sensor l CO2Meter
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The LOX-O2-F UV Flux 25% Oxygen Flow Through Sensor (formerly known as OX-0055) is designed to be used anywhere 0-25% oxygen levels need to be monitored in a closed system. This makes it a valuable tool for industry, researchers or scientific study.

The sensor benefits from lower power requirements than electrochemical and galvanic sensors, while providing a longer lifetime due to the non-depleting sensing principle.

The LOX-O2 is ppO2 and temperature compensated, enabling linear operation over a wide range without the need for additional system components. It does not contain lead or any other hazardous materials and has negligible cross sensitivity to other gases.


  • Flow-through housing for easy sample gas management
  • Fast response T90 <10s 
  • Works in vacuum and high oxygen concentrations
  • RoHs & REACH compliant


  • LOX-O2-F:  UVFlux Oxygen Sensor – For research, science, experiments or integration into high-volume OEM products.
  • CM-42990: UVFlux Oxygen Sensor w/ MX Board and Flow Through Tube Cap
  • CM-42911: UVFlux Oxygen Sensor Development Kit
  • CM-200: Sensor Development Kit - Easy to use, simply plug the sensor into the PCB and plug it into your PC via USB. Use our free GasLab® software to measure and graph carbon dioxide or use our library of source code on Github to build your own application or for OEM batch testing/configuration. Order the sensor on this page, then order the Devkit here.

We recommend that all first time users purchase both this sensor and the CM-200 Development Kit for fastest and easiest results.


  • Measuring Gas: Oxygen
  • Measurement Range: 0 - 25% O2
  • Sensing Method: Fluorescence quenching by oxygen
  • Measurement Interval: 1 Sample/second
  • Oxygen Pressure Range: 0 — 300mbar ppO2
  • Response Time: T90 < 10s
  • Warm-Up Time: < 60 Seconds at 72°F (22°C)
  • Accuracy: Better than 2% at full scale
  • Humidity: 0-99% RH (non-condensing)
  • Resolution: 0.10% / 0.1mbar
  • Temperature Accuracy: +/- 2 degrees C
  • Pressure: ±5mbar
  • Operating Temperature: -30°C to +60°C
  • Barometric Pressure Range: 500 to 1200mbar
  • Lifetime: > 5 years

Electrical / Mechanical

  • Supply voltage: 4.5 - 5.5 VDC
  • Supply current: <7.5mA (streaming one sample per second)
  • Output type: 3.3V TTL level USART
  • Interface: UART or analog


  • Gas Sensor Development Kit (CM-200)- designed to provide customers with an easy drop-in solution. Includes our free Gaslab data logging software. Sensor sold separately.
  • 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 1 review
Jaime Ballester
Never arrived

Wish I could review but Fedex did not deliver or something else happened. But item never reached me. I was setting out on a BBQ looking towards the garage when a notification arrived on Easter Sunday saying item was left in garage. Really? This may be a FEDEX problem but for sure I am very disappointed that I paid full price and got zero. I want my money back.

Dear Jaime,

We appreciate your overall feedback in regards to your experience when purchasing gas detection monitoring and analysis solutions from We apologize for the unfortunate circumstance with FedEx and not being able to ship your device in a timely manor, unfortunately once the product leaves our warehouse it is out of CO2Meter control via the shipping carrier.

We know during this time it has also provided many delays across various carriers and protocols. We want to ensure moving forward that you recognize that we take your feedback into deep consideration with shipping procedures and future customer experiences.

We hope you will consider altering your product review in regards to our most recent discussion.

We appreciate your insight and feedback, Thank you for choosing CO2Meter.

CO2Meter Team

"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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