Optics: measuring and testing – By particle light scattering – With photocell detection
Reexamination Certificate
2006-11-28
2006-11-28
Stafira, Michael P. (Department: 2877)
Optics: measuring and testing
By particle light scattering
With photocell detection
Reexamination Certificate
active
07142299
ABSTRACT:
A turbidity measuring system is provided with a chamber and a sensor having a watertight housing, a light source, a first light focusing device for focusing a light emitted from the light source and passing therethough into a sample liquid, a second light focusing device for collecting at least one scattered light resulted form the focused light when passing the sample liquid, a photodiode for receiving the collected light thereby generating electronic signals, and an electronic board for processing the electronic signals. In particular, the watertight housing has a tilted bottom, the light detector includes at least two photodiodes for detecting separated turbidity measuring ranges, or an insert is placed at the bottom of the chamber having first and second insert channels each of whose axis pointing toward an axis of one of the cylindrically-shaped channels in the watertight housing in order to trap light.
REFERENCES:
patent: 3888269 (1975-06-01), Bashark
patent: 4841157 (1989-06-01), Downing, Jr.
patent: 5350922 (1994-09-01), Bartz
patent: 5453832 (1995-09-01), Joyce
patent: 6324900 (2001-12-01), Bruno et al.
patent: 6842243 (2005-01-01), Tokhtuev et al.
patent: 2003/0117623 (2003-06-01), Tokhtuev et al.
patent: 2003/0214653 (2003-11-01), Palumbo et al.
patent: 1281342 (1968-10-01), None
O'Dell, James A., “Appendix B. Determination of Turbidity By Nephelometry” EPA Guidance Manual Turbidy Provisions, Apr. 1999, pp. B1-B10.
“Water quality—Determination of turbidity”, International Standard ISO 7027, Third Edition, Dec. 15, 1999, pp. 1-11.
“Omega Engineering—Turbidity Measurement”, Omega.com , Nov. 5, 2004, pp. 1-5.
European Search Report dated May 4, 2006.
Christensen William
Owen Christopher J.
Skirda Anatoly
Tokhtuev Eugene
Apprise Technologies, Inc.
Stafira Michael P.
LandOfFree
Turbidity sensor does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Turbidity sensor, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Turbidity sensor will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-3658669