Patent · US Active

Optical pH sensor

US7961327B1 · kind B1 · utility

2Cited by

34References

16Claims

0Family size

Assignee

Bovaird & Co. · US

Inventors

Peter LoPresti · Bixby, US
Kerry L. Sublette · Tulsa, US
Kaveh Ashenayi · Tulsa, US
Brian Bovaird · Tulsa, US

Key dates

Filing date	Jan 7, 2010
Grant date	Jun 14, 2011
Priority date	—
Expiry date	Jan 7, 2030

Classification

Technology area (CPC G)Physics
CPC primaryG01N21/55
WIPO fieldMeasurement
WIPO sectorInstruments

Abstract

A method to sense pH of a fluid and an optical pH sensor. The method includes the steps of supplying at least a portion of an optical source through an input fiber. The optical source is passed through a sensor head having a sapphire window to a fluid. Optical power reflected from the fluid is collected in a plurality of output fibers in the sensor head. The reflected optical power in the output fibers in the sensor head is thereafter converted to an electrical signal which is used to determine the pH of the fluid.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.