Dissolved oxygen probe
US3948746A · kind A · utility
12Cited by
8References
7Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jan 20, 1975 |
| Grant date | Apr 6, 1976 |
| Priority date | — |
| Expiry date | Jan 20, 1995 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01N27/404
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A probe immersible in liquid having oxygen dissolved therein and adapted to continuously and accurately measure the oxygen concentration. The probe includes a noble metal measuring electrode, a copper counter-electrode and a potassium hydroxide electrolyte which together define a galvanic cell whose output current depends on the amount of oxygen passing into the cell through a diffusion membrane permeable only to gases. The oxygen within the cell is electrochemically reduced at the surface of the measuring electrode to generate a current that is proportional to the oxygen concentration, the counter-electrode being oxidized.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.