Turbidimeters with variable gauge length

Author

Fetisov, Vladimir S. ; Melnichuk, Olga V.

Author_Institution

Dept. of Inf. & Meas. Technol., Ufa State Aviation Tech. Univ., Ufa, Russia

fYear

2009

fDate

18-23 May 2009

Firstpage

1123

Lastpage

1128

Abstract

Various problems in the field of liquid media turbidity measurement are reviewed, such as in-line turbidimiters errors caused by dirtying on windows of its optical elements and the problem of wide dynamic range of turbidity. The idea to adapt gauge length (distance between a light source and a photodetector) of turbidimeters for current values of turbidity with the purpose of error minimization is stated. Proposed turbidimiters are able to realize the automatic recognition of situations when photodetector signal decrease is caused by dirtying of optical elements windows rather than by increase of turbidity of medium. Such solution allows to switch on a cleaning device according to critical degree of windows dirtying. Some results of mathematical modeling are presented.

Keywords

gauges; optical windows; photodetectors; turbidimetry; turbidity; automatic recognition; cleaning device; error minimization; liquid media turbidity measurement; optical elements windows; photodetector signal; turbidimeter; variable gauge length; Attenuation measurement; Cleaning; Light scattering; Light sources; Optical attenuators; Optical scattering; Optical sensors; Particle measurements; Particle scattering; Photodetectors; ratiometric principle; turbidimeter; variable gauge length;

fLanguage

English

Publisher

ieee

Conference_Titel

EUROCON 2009, EUROCON '09. IEEE

Conference_Location

St.-Petersburg

Print_ISBN

978-1-4244-3860-0

Electronic_ISBN

978-1-4244-3861-7

Type

conf

DOI

10.1109/EURCON.2009.5167776

Filename

5167776