The Proteus is a brand new multi-parameter, real-time sensor platform for patented real-time measurement of BOD, COD, TOC and Coliforms


The Proteus is a brand new multi-parameter, real-time sensor platform for patented real-time measurement of BOD, COD, TOC and Coliforms (total, e. coli or faecal) that compensates for temperature and turbidity.  With this new device, say goodbye to the 5 Day laboratory BOD test and hello to live readings in the field in a portable or permanent setup.

What is the secret? Well, if you hit organic material with a short-wave ultraviolet wavelength (approx. 280 Nanometres) the organic material will fluoresce at a wavelength (approx. 350 Nanometres) which is used to measure BOD. These fluorometers have been used in laboratories for many years to analyse water quality samples from the field and are the established and trusted technique for reliable measuring of dissolved organic matter. Using the latest short wavelength LED technology, we were able to miniaturise a submersible fluorometer that gives you the same level of accuracy as the lab instruments, but within harsh environments, the Proteus.

The Proteus is a multi-parameter device that measures pH, REDOX, Electrical Conductivity, Dissolved Oxygen, Temperature and Turbidity. Incorporating the measurement of pH, Temperature and Turbidity we then measure BOD/COD/TOC/DOC and Coliforms. The platform comes in 4 different sizes to accommodate multiple parameters that need to be measured as well as the option of onboard batteries if this option is selected. Not every single parameter offered can be measured in a single probe, but as the sensors differ in size it is possible to measure up to 13 different parameters in one Proteus Probe, depending on selection.

The other parameters offered are Pressure (level measurement in vented and non vented form), Chloride, CDOM, Ammonium, Nitrate, fDOM, Refined Oils, Optical Brighteners, TDS, Crude Oils and TDG. We have also recently added a calculated Free Chlorine measurement, but only for water below a pH of 8, as the accuracy of the measurement decreases above a pH of 8.

How does this new technology apply? It means that one can now timely adjust downstream processes at a WWTW to optimise the treatment process as one can determine the BOD loading to the treatment plant. Combined with the BOD discharge measurement, one could potentially backward control aeration of the basins in place of just running them at full capacity all the time, resulting in potential energy savings. This would be combined with the plant’s DO measurements as well as the detection level of E.coli in the discharge stream for Environmental compliance and efficiency of the disinfectant regime.

Another application could be the monitoring of water courses, water storage facilities and ground water contamination through organic or faecal coliform loading, with a fixed device or self-contained, portable device.

There are also no reagents required as the measurements are optical or Ion selective, except pH, and coupled with the fact that there is a built-in wiping mechanism, the sensors are kept clean all the time. Quarterly inspections are advisable, with the pH buffering at the same time as good practice. On the power side, the Proteus offers several options, including an internal Lithium battery packs (for unattended logging) or multiple external power options such as battery, mains or PV (solar) panel.

As far as coms are concerned, the Proteus can easily be integrated with any Telemetry / SCADA System and can also be used with existing logging devices when used with an external RS232/Modbus/SDI12. The integrated data logger can store 1 Million readings, which can be viewed through our portal on a computer, mobile phone/ tablet or at the instrument using an optional Bluetooth adaptor.

Please contact us for further information regarding this new disruptive technology.


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