METHOD OF DETERMINING THE FILTERING DEVICE SERVICE LIFE Russian patent published in 2002 - IPC

FIELD: methods of automatic determination of filtering device service life installed on pipeline; applicable in systems of potable water purification, mainly, under household conditions. SUBSTANCE: method includes automatic measurement of integral optical density of water in ultraviolet range by optical transducer with subsequent transmission of electric signal to processing means; dat analysis and determination of used service life by relative variation of integral optical density of water during filtration. Integral optical density of water is measured in range of wave length from 200 to 300 nm, mainly, from 230 to 260 nm. Filter service life may be determined by measurement of integral optical density of filtered water or initial and filtered waters. EFFECT: higher reliability and simple determination of filtering device service life. 5 cl, 5 dwg, 1 tbl