NEW: OxyGuard Polaris C Dissolved Oxygen Meter

Hand-held oxygen and temperature meter with NFC and Bluetooth technology for automatic or manual upload to Cobalia

The Polaris C meter is a high-performance, low-cost and almost maintenance-free meter for measuring dissolved oxygen and temperature. The meter is sturdy, easy to use and has an extensive longevity making it  ideal for harsh conditions. Polaris C can store up to 2500 complete set of data, including time and date stamps. The logged data can be stored either manually or automatically with the possibility to group the data into categories.

The stored data can be uploaded directly to Cobália using Bluetooth technology*. Scan the Cobália NFC tag on the tank and all data will be uploaded to your “digital farm”. Tank specific data assigned to the tags will be stored in Cobália for analysis on temporal variation, generation of graphs and for multivariable analysis on performance.  The meter has a built-in self-check of all hardware, it compensates automatically for  barometric pressure and it has a notably short response time. With this meter, you get the high-quality associated with OxyGuard technology and a product that will serve you well for many years.

* Works only with Android at this time.

Key Benefits

  • High accuracy
  • Easy-to-do calibration
  • Automatic check of the hardware
  • Automatic compensation for barometric pressure and temperature
  • Water-resistant
  • Automatic or manual data logging of up to 2500 full sets of data
  • Bluetooth and NFC technology for direct upload to Cobália
  • Low power consumption: ~1000 hours
  • Immediate response time
  • Variable display options and unit use
  • Self-polarising and temperature compensating electrochemical probe
  • Long-term stability


  • Units of measurement: Oxygen: ppm (mg/L), % saturation. Temperature: degrees Celsius (°C), degrees Fahrenheit (°F)
  • Display: Graphical LCD display with variable backlight
  • Probe type: Electrochemical
  • Cable length: Standard 3 m. Available at any length up to 50 meters by request
  • Operating temperature: Probe: -5 to +45 degrees Celsius (°C) and +23 to +113 degrees Fahrenheit (°F). Meter: -20 to +60 degrees Celsius (°C) and -4 to 140 degrees Fahrenheit (°F)
  • Waterproof: Short-term immersion proof to 5m depth
  • Response time: To 90% in less than 20 seconds
  • Measuring range: Oxygen: 0-60 mg/L and 0-600 % saturation. Temperature: -5 to +45 degrees Celsius (°C) and +23 to +113 degrees Fahrenheit
  • Measuring accuracy: Oxygen: typically ± 1% of measured value. Temperature: ± 0.2 degrees Celsius/Fahrenheit (°C/°F)
  • Data logging capacity: 2500 sets of data with up to 99 data groups
  • Salinity compensation range: 0-50 ppt salinity. Manually set
  • Automatic check of: Probe function, meter function, cable and battery
  • Automatic compensation: Temperature and barometric pressure (0-7000 m a.s.l)
  • Dimensions meter: Length = 98 mm, diameter = 36 mm (Length: 3.86 in, diameter: 1.42 in)
  • Dimensions probe: Length = 159 mm, diameter = 22 mm (6.26 in, 0.87 in). With protection cap: Length = 176 mm, diameter = 29 mm (6.93 in, 1.14 in)
  • Power: 2 AA alkaline batteries
  • Battery life: 1000 hours use depending on settings and battery quality
  • Standard accessories: 10 membranes and O-rings, 50 ml electrolyte, cathode cleaning pad, tool, storage pouch
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