Pressure activated calibration system for chemical sensors
US6408674B1 · kind B1 · utility
Assignee
Inventor
Key dates
| Filing date | Apr 7, 1999 |
| Grant date | Jun 25, 2002 |
| Priority date | — |
| Expiry date | Apr 7, 2019 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01N33/0006
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A device for remotely calibrating leak sensors is disclosed. The leak sensor calibration device includes a reservoir for storing a fluid calibrant, a conduit in flow communication with the reservoir, an outlet nozzle, an air supply source, and a valve mechanism. A portion of the conduit defines a dosing chamber for storing a measured quantity of the calibrant, and the outlet nozzle is in flow communication with the dosing chamber. The air supply source is adapted to pressurize the measured quantity of calibrant stored in the dosing chamber. The valve mechanism is adapted to eject the measured quantity of calibrant stored in the dosing chamber to the atmosphere through the outlet nozzle.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.