Municipal Water Treatment Sensors
Sensorex specializes in the design and manufacture of sensors and instruments to monitor many of the most important water quality parameters in municipal water treatment:
Monitoring pH is required to ensure that water and wastewater are neither too acidic nor too alkaline. Therefore, most treatment plants analyze pH before water leaves their facilities. Additionally, pH may influence the ability of disinfectants, such as chlorine, to oxidize contaminants. When biological processes are used in wastewater treatment, such as when bacteria break down contaminants, monitoring pH ensures that the useful bacteria in the system can proliferate and thrive.
Oxidation Reduction Potential (ORP)
Monitoring oxidation reduction potential (ORP) provides an indication of the performance of disinfection processes. When an oxidizer such as chlorine is used as a disinfectant, it is possible to control dosing using either ORP measurements or by measuring the oxidizer concentration directly. Measuring ORP is often more cost effective in comparison.
Chlorine & Chlorine Dioxide
Amperometric sensors measure chlorine and chlorine dioxide concentration directly in ppm, as opposed to an ORP measurement given in mV. Unlike ORP sensors, amperometric free chlorine and chlorine dioxide sensors are not sensitive to other oxidizers or reducers in solution.
Ultraviolet (UV) Transmittance
The UV transmittance (UVT) measurement relates to the organic content of water or wastewater. It is measured optically by sensing the amount of light of wavelength 254nm transmitted through a water sample. Just like pH, ORP, and free chlorine measurements are used to dose chemicals, UVT measurements are used to adjust UV light intensity for disinfection.