Method and apparatus for controlling the feed of water treatment chemicals using a voltammetric sensor
US5470484A · kind A · utility
53Cited by
9References
20Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jan 13, 1994 |
| Grant date | Nov 28, 1995 |
| Priority date | — |
| Expiry date | Jan 13, 2014 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01N27/49
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A method for controlling the chemical treatment of a solution comprises the steps of feeding a treatment chemical into the solution, applying an external voltage across a reference electrode and a working electrode of a voltammetric sensor while the electrodes are immersed in the solution, measuring a current that flows through the working electrode, converting the measured current into a feedback signal indicative of the concentration of treatment chemical in the solution, and using the feedback signal to control the rate of feeding the treatment chemical.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.