M4M Dissolved Oxygen Sensor

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SKU: TT-BLK-DO-5402.

M4M Dissolved Oxygen Sensor

Forget everything you ever thought you knew about membrane technology. The Turtle Tough M4M is amperometric membrane technology at its best and has proven itself over almost 3 decades in the toughest mining conditions on the planet.

  • 0 to 40ppm (0 to 60ppm optional)
  • Super Tough membrane technology – no breaks or rips even in the harshest conditions
  • Extra long calibration stability – 3 to 4 months
  • Calibrates easily in air – no zero solutions
  • Long sensor life – ultra tough sensor last up to 20 years in clean applications and 5+ years in harsh mining slurries
  • Low maintenance – most applications requiring only annual maintenance
  • Hundreds of mine sites worldwide use this unit
  • Description
  • Downloads
  • Application & Use
  • Case Studies

When it comes to TOUGH, nothing surpasses the Turtle Tough M4M Dissolved Oxygen sensor. For almost 30 years this unit has been used world wide throughout the mining community, renown for it's extreme durability and low maintenance in some of the world's harshest conditions. Utlising a Teflon membrane there have been many sceptics, tainted by their experience with cheap membrane technology that drifts, is un-repeatable and that fails due to tears and ruptures of the membrane that ultimately contaminate and destroy the sensor.

The Turtle Tough M4M couldn't be more different. This German made technology sets a new benchmark in membrane technology. The ultra tough Teflon membranes are resilient to highly abrasive slurries and maintain excellent repeatability and accuracy. The membrane usually only requires replacement annually at the recommended service interval. Calibration stability is an astounding 3-4 months and the units simply calibrate in air, without any need of zero solutions.

The sensor is extremely fast response, which is critical for applications that demand accuracy or measure at high ppm.  This is especially true for portable units which are often tank dipped or used to measure grab samples. Operators rarely allow the required time for stabilisation, so the fast response of the sensor means less human error and high accuracy.   The standard unit is capable of 0-40ppm while 0 to 60ppm is optional.

The Turtle Tough M4M Dissolved Oxygen meter is equally at home in the laboratory as it is the field. It has been designed with this dual use in mind and powers directly from a 240Volt mains powered cable for full time lab use.  Disconnecting it, the unit has full field portability, with provision of up to 20 hours of use of battery backup power, and a long 7.5 meter cable that conveniently winds up onto the back of the unit.

The enclosure is seriously tough. Made from ABS plastics in an IP65 enclosure the major components and switches are all replaceable. To this day we still see field serviceable units that are greater than 25 years old.  It is truly a testament to the quality and longevity of this model, one that has stood the test of time.

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