Gas sensor calibration method
US7401493B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Oct 26, 2006 |
| Grant date | Jul 22, 2008 |
| Priority date | — |
| Expiry date | Oct 26, 2026 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01N33/0006
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
An apparatus is described for calibrating at least one sensor within a gas detector which detector has a gas inlet in fluid communication with the or each sensor, the apparatus comprising a housing that contains: a) a surface for abutting against the detector; b) a holder for holding the gas detector with respect to the housing in such a manner that a region of the detector containing the gas inlet abuts against the surface of the housing to form a sealed gas interface between the surface and the detector; c) a connector for connecting a source of pressurized calibration gas to the apparatus, d) a conduit for delivering a calibration gas from the connector to the interface between the detector and the apparatus housing, e) electrical connections within the holder for forming electrical connections between the apparatus and a detector held within the holder, and e) a flow controller within the conduit for providing calibration gas at a predetermined level to the interface, the flow controller including an electrically-operated valve being controllable for initiating and terminating the flow of calibration gas through the conduit by means of signals received from the detector via the…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.