0-25% O2 Sampling Data Logger

0-25% O2 Sampling Data Logger
0-25% O2 Sampling Data Logger
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CM-0505 25%

The Portable O2 Sampling Data Logger lets you log Oxygen levels over time in inaccessible areas and closed samples via the built-in gas sample draw pump. Use it for

  • Fermentation monitoring & validation
  • Biological incubators
  • Agricultural O2 up take analysis
  • Modified Atmosphere Packaging (MAP)
  • Grain storage mold potential monitoring
  • O2 leak detection
  • Fire suppression system testing

Inside the Sampling Data Logger is a battery-operated micro-pump connected to two tubing ports. The unit can be programmed to measure at specific intervals, draw gas for a programmable period of time from the inlet port, expel it from the outlet port, and log the O2 values with a time stamp. Later, the data can be retrieved via USB connection to a computer running our free DAS software

By connecting tubing to the inlet, you can remotely sample gas, or by connecting tubing to both ports, you can create a closed-loop system and return the gas back to the original container. This makes the Sampling Data Logger perfect for controlled or modified atmosphere packaging (MAP), or measuring potentially dangerous Low concentrations of O2 in biological applications over hours, or even days.

The battery-operated, portable Sampling Data Logger only comes in a 0-25% O2 model. Model includes a data cable for programming and retrieving logged data, a back-lit LCD that changes color according to O2 levels, filters, fittings, tubing, and auxiliary international power supply.

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


  • O2 Measurement: fluorescence quenching / UV light
  • Temperature: 30 C to 60 C
  • Relative Humidity: 0.1-99% (non-condensing)
  • Sampling Method: Tube sampling (0.30 liters/minute)
  • 60,000 measurement capacity
  • Measurement interval 2 second to 18 hours
  • Sensor Life Expectancy: > 5 years
  • Calibration certificate (included)
  • Maintenance Interval: No maintenance required
  • Size: 5.75×5.6×1.3in (146×91×33mm)
  • Tubing sizes: 3/32 or 1/8"
  • 1,000 hour pump - upgrade available to 10,000 hour pump on request

LED Display

  • O2 in percentage format (nn.nn%) for 25%
  • Logging On/Off
  • Percentage of memory free


  • 4 AA batteries (not included)
  • International wall power supply 6VDC(included)

Included Accessories

  • USB A to USB Mini Cable
  • 1/8" tubing 10 feet long
  • International wall mount power supply
  • Moisture trap
  • Particulate and hydrophobic filters
  • Assorted tubing fittings
  • High-Impact Carrying Case

System Requirements for Data Logging or Changing Defaults

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


  • 1 Year

oxygen sampler manual Manual (pdf)

Dimensional Drawings (pdf)