Specifications

 
The AMI SAC254 is an online monitor for continuous measurement of UV absorption at a wavelength of 254 nm. UV absorption is a surrogate measuring principle to determine organic material (DOC, TOC, etc.) in water treatment processes.

• Unique, patented principle of operation – dynamic absorption measurement at multiple optical path lengths:
  – Stable measurement without drift, insensitive to fouling
  – Broad measuring range from 0 up to 300 m-1 with 0.05 m-1 detection limit
• Integrated turbidity correction at 550 nm according to DIN 38404-3
• Integrated grab sample functionality for manual measurement, verification and calibration.

For further information see data sheet in downloads.
 

Spectral Absorption Coefficient – SAC254

SAC254 is a sum parameter, which indicates the organic load in potable water and wastewater, as UV absorption at 254 nm is typically dominated by organic contaminants. Correlation to multiple carbon-based parameters (DOC, TOC, etc.) makes SAC254 a versatile measurement since elevated levels of organic carbon (OC) are related to many water quality issues: OC decreases the microbiological stability of drinking water and the presence of disinfectants. It is a precursor for the formation of carcinogenic organic disinfection by-products and can give rise to taste and odour issues itself if present at ppm levels. The efficiency of UV disinfection is reduced as the inactivation of pathogens competes with UV absorption by DOC. Accordingly, the efficient removal of OC is a major goal during potable water production and wastewater treatment. Monitoring OC through UV absorption is a technically simple and fast method compared to DOC/TOC online analysers or lab measurements. The AMI SAC254 enables early detection of water quality changes that require the adjustment of treatment steps or further measures in order to assure a constantly high water quality.

 

Contact us to place an order.