Portable multi-channel device for optically testing a liquid sample
US7491366B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 3, 2005 |
| Grant date | Feb 17, 2009 |
| Priority date | — |
| Expiry date | Dec 19, 2026 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01N21/51
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A portable multi-channel device for optically testing of a liquid sample includes a controller; and a sample holder with a cylindrical sample compartment and at least two optical channels respectively for measuring turbidity of the sample liquid and for measuring one other optical property of the sample liquid. Each of the optical channels including: a light source placed at one end of the channel, a main detector placed across the sample compartment from the light source, a reference detector for measuring an intensity of light emitted by the light source, and an excitation focusing optic for directing a light emitted by the light source through the sample compartment towards the main detector. Signals from the reference detector of the channel, the main detector of the channel, and another main detector of another channel perpendicular to the channel are processed by the controller to evaluate the turbidity of the liquid sample.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.