WHAT IS UV254?
UV254 / SAC254 / UVA
UV254 refers to ultraviolet light at a 254 nm wavelength used to measure water quality. It works by passing UV light through a water sample to an optical sensor that measures the transmitted and absorbed light.
UV254 data are expressed in UV absorbance (Abs) and UV transmittance (%). This method provides rapid, continuous water quality monitoring, detecting organics and micropollutants invisible to the human eye.
UV254 can be used for constant monitoring or spot-checking and as a Spectral Absorbance Coefficient (SAC) measurement. It detects aromatic bonds and can correlate with Biochemical Oxygen Demand (BOD), Chemical Oxygen Demand (COD), and Total Organic Contents (TOC).
UV254 DATA
Real time UV254 results are obtained using analysis probe or cuvette sensor and displayed on a controller. This data can be integrated with SCADA systems or transferred using IoT, GSM, memory card or logged directly on the controller.
UV254 data can be presented in trends to determine is there is a spike in pollution, if a storm event occurs or there has been a drop in the quality in water. The UV254 parameter produces data which can be used by water companies, for environmental or trade effluent monitoring.
The data obtained from measuring UV254 allows for instant water quality measuring at WTPs, WwTPs, CSOs, aeration control, industrial effluent as wells as integrity testing of UV disinfection systems.