TURTLE
TOUGH
®
6
Introduction
When it comes to TOUGH, nothing surpasses our Tough Portable System. For almost 30 years this unit has
been used worldwide throughout the mining community, renown for its extreme durability and low mainte-
nance in some of the world’s harshest conditions. Utilising 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 - Tough Portable System 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 the air, without any need for zero solutions.
The sensor has an 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.
Tough Portable System Dissolved Oxygen meter is equally at home in the laboratory as it is in 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 a provision of up to 20 hours of use of
battery backup power, and a long 7.5-metre 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.
