Electrochemical gas sensor with wraparound reference electrode
US5284566A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jan 4, 1993 |
| Grant date | Feb 8, 1994 |
| Priority date | — |
| Expiry date | Jan 4, 2013 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01N27/4045
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
An electrochemical sensor for detecting gas includes stacked reference, counter and sensing electrodes within a body and having a quantity of a liquid electrolyte in an electrolyte chamber therein. A support is provided for holding the electrodes and mats in contact with each other and at an inner end of a cavity within the sensor. A gas passage, such as a diffusion limiter, is provided through the sensor body and permits gas to reach the sensing electrode. The reference electrode is formed in a wraparound structure, with the reference electrode provided with a plurality of integral extensions which extend around the support and the counter electrode and into contact with the liquid electrolyte, thereby providing a large reference electrode fitted into a small body.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.