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Turtle Tough-Ni-pH Nickel pH Sensor

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Turtle Tough-Ni-pH Nickel pH Sensor

There is perhaps no other sensor that we are more famous for than our TT-Ni-pH Nickel pH Sensor which has been used in Nickel extraction and refining process (HPAL) for more than 20 years.

Ammonia injection and solvent extraction are two critical components of nickel extraction in process environments. Dissolved gas ingress into the sensing elements of pH sensors is a common cause of premature sensor failure. Solvent extraction also presents some unique challenges to pH measurement, as the presence of organic solvents will dissolve many common materials of construction while the small water volumes in the extraction process frequently present very extreme pH measurements.

The TT-Ni-pH Nickel pH Sensor utilises special body plastics and sealants to resist solvent attack and our sensing elements are protected from dissolved ammonia gas ingress through a triple junction references and high impedance glass electrodes. Optionally, additional cable isolation can be added to provide more resistance to the electrical components of the sensors. The sensor is rated to above 150psi allowing the sensor to perform its task in high pressure acid leach and solvent extraction environments. Turtle Tough have developed a range of mating interfaces, including immersion, submersion and hot-tap assemblies to ensure you can obtain your process measurement right where it is needed, rather than just settling on an easy access point.

Digital Smart Sensor Technology (DSST)

This sensor is available with our digital smart sensor technology. This plug and play sensor has a quick connect fitting, eliminating the need for hard wiring to the analyser. On-board sensor memory allows the storage of calibration data, analyser configurations and sensor service history. This allows the sensor to be conveniently maintained and calibrated off-site or in the laboratory and pre-programmed with calibration data and analyser configurations. This stored information automatically uploads to the analyser upon connection and eliminates the need for any interaction with the analyser, greatly simplifying the change-out of sensors. A service log stored on the sensors is ideal for maintenance and quality assurance records.

  • Designed Specifically for HPAL
  • 6m cable
  • RADEL with ¾” Front End – 1” Back End MNPT
  • -5°C to 135°C
  • Fast Response TC for calibration accuracy
  • Triple Junction
  • Solvent Resistant
  • Acid/Fluoride Resistant
  • Ammonia, Chlorine and Sulphide Gas Resistant
  • High Capacity KYNAR Reference
  • Proprietary toughened glass
  • Digital smart sensor technology (optional)
          - No hard wiring – plug-n-play connectivity
          - Sensor stores calibration data, analyser configuration and sensor history
          - Hot-swap for quick sensor change-out
          - No interaction with analyser – sensor data auto uploads

pH Sensor for Nickel Datasheet
pH Sensor Configuration Guide
Turtle Tough - pH/ORP Manual
ph/ORP Sensor Shipping Manual


About Us

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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