Bürkert’s modular Online Analysis System for measuring water quality is also available as a compact field unit. Parameters can be set and measured data evaluated via digital interfaces. A new feature is also a sensor module for automatically measuring iron content.

Measuring the quality of water is essential in many sectors. Be it in desalination plants, waterworks, the food and pharmaceutical industry or for water distribution networks, the quality must always be checked, documented and faults resolved immediately.

Bürkert Fluid Control Systems has further developed its proven modular Online Analysis System (Type 8905), which is now available as a compact field unit without a display.

The field unit can be equipped with any number of cubes, ensuring required parameters, such as pH, chlorine/chlorine dioxide, conductivity, redox potential (ORP) and turbidity, can be recorded at various points in the process.

The range now also includes a sensor cube for iron content, allowing operators to have continuous, online monitoring. The fully automatic process relieves the burden on users by eliminating the need for manual sampling and analysis.

Using stored parameters, the system recognises anomalies and can issue warnings, ensuring high water quality at all times.

Thanks to minimum water and reagent consumption, approximately 100µl per injection, 250ml of the chemical is sufficient for roughly 2,500 measurements of approximately one minute each.

The optical flow injection analysis works fully automatically using high-precision microfluidic pumps and valves, is self-calibrating and only has to be cleaned once a year. The reagent containers can be reliably identified via a barcode, which eliminates the risk of incorrect loading.

Municipal water treatment service saves time and money

Kempsey Shire Council is a local government utility responsible for providing water and wastewater services to the Kempsey district, 350km north of Sydney.

At the South West Rocks Recycled Water Treatment Plant, final treatment of effluent includes ultra-filtration, UV disinfection and the addition of chlorine, all of which are required to achieve the necessary standards of water quality.

To ensure that the water quality standards are being maintained, the council uses a monitoring station, equipped with sensors for measuring pH and chlorine.

After years of working with an aging system that required frequent maintenance and recalibration, meaning increased levels of operator intervention, the council installed Bürkert Type 8905 water analysis system.

Tristan Nowland, Instrument Technician at Kempsey Shire Council, said, “I liked being able to talk with their water industry specialists and local engineers at any time when I had specific questions, and I felt comfortable that Bürkert were confident in their knowledge of the system and my application needs.”

Since the first three analysis systems were implemented for performance evaluation, Kempsey Shire Council has installed an additional system at the Fredrickton Reservoir, which is also monitoring pH and chlorine.

This site endures extremely hot summers with no detrimental effects to the performance of the sensor cubes and has achieved almost a year in operation without the need to recalibrate.

As early adopters of the compact unit, the operators at Kempsey Shire Council have been blown away with the reliability of the unit and the integrity of the data.

For more information regarding Bürkert’s expertise in water quality analysis, please contact us at [email protected]

This partner content is brought to you by Bürkert Fluid Control Systems. For more information, visit

Charlotte Pordage is Editor of Utility magazine, a position she has held since November 2018. She joined the team as an Associate Editor in October 2017, after sharpening her writing and editing skills across a range of print and digital publications. Charlotte graduated from Royal Holloway, University of London, in 2011 with joint honours in English and Latin. When she's not putting together Australia's only dedicated utility magazine, she can usually be found riding her horse or curled up with a good book.

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