The TT-Au-pH Gold pH Sensor is the result of more than 20 years experience in gold ore mining and refining processes. This sensor continues to provide unparalleled performance and service life in this demanding application earning it the respected title of being the best in the industry. Leaching gold with cyanide is the most common method of gold recovery from ores, and requires precise electrochemical control of a number of reagents. Alkaline environments are a must for safety; incorrect pH control can cause over-use of reagents and create highly dangerous process environments with the evolution of Hydrogen Cyanide. We have supplied accurate, long life sensors for pH, ORP and cyanide into numerous gold processing facilities throughout Australia, Asia and Africa for almost 25 years. 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

The Turtle Tough pH Sensor for Copper is not a one size fits all approach. Arguably our most application specific sensor we tailor it to meet the requirements of each individual installation.  Unnecessary resistance elements can compromise both price and performance, so for this tough application we only put in what you absolutely need.

Copper ores are typically concentrated by either froth flotation or hydrometallurgical extraction, both of which have unique process challenges. Froth flotation is wrought with measurement difficulties; surfactants will coat measurement elements and report incorrect results where xanthates will continuously attack probe bodies and measurement elements, rendering sensors unusable very quickly. Copper oxide ores are typically leached with sulphuric acid and subsequently refined further via solvent extraction, with acids, sulphides and solvents all aggressively attacking all elements of the sensor.

The standard sensor is supplied with high levels of chemical resistance, including sulphide and dissolved gas resistance. Optionally, if the application requires we use solvent resistant sealants and different body plastics depending on the solids content of the ores. With this often tough application we are continuously evaluating each installation to ensure we supply the most robust and accurate sensor for copper ore processes. We are proud to say that our performance in this application has been unmatched anywhere in the world.

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.

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.

The TT-Zn-pH Zinc pH Sensor has more than 10 years history of providing unparalleled performance in Zinc leaching processes.

Zinc is leached using sulphuric acid, which dissolves the zinc content and leaves the iron and lead precipitates undissolved. However, the process can be inefficient if there aren’t adequate process controls in place, and can lead to lower grade products. Sensors will often drift significantly, and there is constant attack on the pH glass elements from the dissolved zinc complexes. In conjunction with one of our major clients, we developed a pH glass element that resists attack from these zinc complexes, which both improves sensor lifetime and greatly reduced sensor drift.

Additional sulphide resistance has been added to all components and by increasing the physical strength of the body this sensor can also be used in in high velocity, high solid content slurries where other sensors will easily break. The improved accuracy and stability of this sensor has proved itself in improving zinc yields, while the increased sensor lifetime will reduce labour costsand total cost of ownership.

Due to the high resistance qualities of this sensor it is only available in our digital smart sensor technology.