The UV254Sense UVA/UVT monitor provides real time organic UVA (ultra-violet absorbance) and UVT (ultra-violet transmission) analysis. The real time monitoring of organics in water has improved greatly with technological improvements in spectral analysis of the ultraviolet light range using the UV254 analyser which as standard comes with UV transmittance and UV absorbance outputs. It does this by passing a low flow of water continuously through a fixed silica cuvette and by shining a UV254 light through the water measuring how much is absorbed (UVA) and how much is transmitted (UVT).

The concentration of contaminants such as the organics that lead to disinfection by products (DBPs) can be determined by measuring the light absorbed by a water sample at a particular wavelength (254nm). The absorbance of light used in UV254 monitors provides an indication of the amount of aromatic (or reactive) organic matter in water, making it an excellent choice as a surrogate measurement for total organic carbon (TOC) in monitoring organics removal from a process.

UV254 analysers from Pi allow for the detection of natural organic matter (NOM) which is found in all waters and has a bias towards aromatic compounds which provides significant benefit for monitoring DBP formation potential.

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  • Online continuous operation
  • Patent pending Ortho-Beam technology
  • 254nm wavelength UV light source
  • Displays UV transmittance or absorbance values
  • UVT (ultra-violet transmission)
  • UVA –The primary application for UV absorbance monitoring is in the optimisation of water treatment process
  • Process Control – Direct measurement of a parameter to control a process such as coagulationUV disinfection and membranes.
  • Specific Parameter Correlation – Correlated to another parameter that is impractical or expensive to measure in real time such as TOC, BOD and COD.
  • Event Monitoring – Used to monitor baseline absorbance which can trigger an alarm when an absorbance event occurs such as security monitoring for contamination events in a municipal installation.
  • Industrial Water and Wastewater secondary and effluent monitoring, to determine treatment efficiency after secondary treatment and provide tertiary treatment monitoring and control.

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