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US 6,307,630 B1Granted
Turbidimeter array system
AssigneeHach Company
InventorAshim K. Banerjee
Life of this patent
Estimating the term…
Abstract
A turbidimeter array system is described in which a common light source and a common detector are used in conjunction with a plurality of test sample chambers for measuring the turbidity of a sample in each of the numerous chambers sequentially. Many embodiments are described for using a common light source and a common detector. The system is cost efficient because the most expensive components are shared.
Claims19
A turbidimeter array system comprising a plurality of sample chambers each including a liquid sample to be tested, wherein said system includes:
- a common light source and a common detector means, wherein said light source directs a light beam into said liquid sample and said detector means detects light scattered by said liquid sample for measuring the turbidity of each of a plurality samples;
- calibration verification means operatively associated with each said chamber, wherein said calibration verification means comprises:
- (a) a beam splitter for splitting the light from said light source into first and second beams;
- (b) polarizer means for polarizing the light in said second beam and controlling the amount of light passing through said polarizer means, and
- (c) shutter means for controlling transmittance of said second beam into said chamber.
2 more elements
A turbidimeter array system comprising:
- (a) a plurality of sample chambers each including a liquid sample to be tested;
- (b) a single light source means for sequentially directing a light beam into each of said sample chambers;
- (c) detector means for sequentially detecting light scattered by said liquid sample in each of said sample chambers and for measuring the turbidity of each of a plurality of liquid samples;
- and
- (d) calibration verification means operatively associated with each said chamber, wherein said calibration verification means comprises:
- (I) a beam splitter for splitting the light from said light source into first and second beams;
- (ii) polarizer means for polarizing the light in said second beam and controlling the amount of light passing through said polarizer means, and
- (iii) shutter means for controlling transmittance of said second beam into said chamber.
5 more elements
A turbidimeter array system comprising:
- (a) a plurality of sample chambers each including a liquid sample to be tested;
- (b) a light source means operatively associated with each said sample chamber for directing a light beam into said chamber;
- (c) a single detector means for sequentially detecting light scattered by said liquid sample in each of said sample chambers and for measuring the turbidity of each of a plurality of liquid samples;
- and
- (d) calibration verification means operatively associated with each said chamber, wherein said calibration verification means comprises:
- (I) a beam splitter for splitting the light from said light source into first and second beams;
- (ii) polarizer means for polarizing the light in said second beam and controlling the amount of light passing through said polarizer means, and
- (iii) shutter means for controlling transmittance of said second beam into said chamber.
5 more elements
Dependencies are inferred from the claim text.