Multi-port probe purge systems and techniques
US8844094B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jun 24, 2009 |
| Grant date | Sep 30, 2014 |
| Priority date | — |
| Expiry date | Sep 3, 2031 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01N33/0006
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
Tubes are used to perform a focused cleaning of a sensor tip. By surrounding the tip with burn-off “jets,” the tip is invariably cleaned by a purge procedure even when strong atmosphere currents are present in a furnace. In dirty environments, an additional purge port, without a focused tube, is used to ensure cleaning of the upper portion of the sheath to prevent soot causing seizure of a sensor element. Alternatively, a means for saturating a sensor's active element with cleaning air is provided, such that a single tube directs air into a multi-port ring at a sensor's tip or into the tip of a sheath, which has channels/holes directing air for purposes of saturating the tip from multiple directions.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.