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General Purpose Dissolved Oxygen Sensor from Turtle Tough

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General Purpose Dissolved Oxygen Sensor from Turtle Tough

The Turtle Tough TT-GP-DO Dissolved Oxygen sensor has a robust, high stability, thick membrane covered self-polarizing active style galvanic cell that generates a millivolt electrical signal proportional to the oxygen pressure it senses. The sensor probe is very rugged, easy to use and a proven solution for measurements for tough industrial, municipal, environmental and aquaculture and for other difficult service condition applications.

Special Features

  • Thick-wall TEFLON™ (PTFE) membrane ensures very high stability, low-drift and high durability in aggressive industrial applications & minimizes frequency of membrane replacement
  • No special maintenance needed. Just wipe the membrane periodically as required.
  • Galvanic dissolved oxygen cell with true zero means only a slope (span) calibration performed clean and dry in air is required.
  • No wet solution calibration is ever needed and so no calibration solutions are ever required for calibration.
  • No look-up tables are needed since the TT-DO transmitter computes the dissolved oxygen ppm value associated with the 100 percent saturation dry in air condition used for calibration at the current measured temperature (from integral Pt element) and the user entered atmospheric pressure. The automatic calibration mode autoreads the mV potential and then assigns the proper slope (span) mV per ppm response for the sensor. Manual calibration mode is also available if the fully automatic calibration mode is not desired.
  • Membrane and electrolyte solution are simple to replace allowing for extremely low ongoing cost of ownership and a theoretically unlimited service lifetime
  • Sensor is not sensitive to hydrogen sulphide gas
  • Automatic temperature compensation
  • Correct measurements with flow as low as 1 cm/s making it suitable for most any common installation type
  • Low maintenance - clean water applications: calibration stability up to 1 year at a time with membrane lasting 3 to 5 years. More aggressive applications will require more frequent servicing

The TT-GP-DO Sensor is a rugged industrial galvanic Dissolved Oxygen sensors with high stability thick membranes for inline, immersion, submersion, sanitary & hot-tap installations.

Ideal for:

  • Continuous Measurement
  • Abrasive Slurries
  • High Levels of Organic and Biological Content
  • High Turbidity & Viscosity

The Worlds Toughest Liquid Analysis Systems
Turtle Tough General Purpose Dissolved Oxygen Sensor Datasheet
Turtle Tough General Purpose Dissolved Oxygen with Pre Amp Sensor Datasheet


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Metex Corporation Limited has been providing superior products and services to the process control, chemical treatment, waste water, industrial and manufacturing industries for over 25 years. It is our goal to continually provide our customers with the best possible equipment, technology, and service.


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