Process for calibrating a gas metering instrument
US4723436A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jun 11, 1986 |
| Grant date | Feb 9, 1988 |
| Priority date | — |
| Expiry date | Jun 11, 2006 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01N33/0006
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A process for calibrating a gas metering instrument comprises flushing a test chamber with a flushing gas and subsequently filling it with a calibrating gas having a predetermined composition of carrier substance and carrier gas. The calibrating gas does not have to be carried and made available constantly in its predetermined composition. Thereby a reduction in the volume of the gas metering instrument is obtained. For this purpose, provisions are made so that a feed device introduces a specified amount of calibrating substance from a reservoir into the heat chamber, whereupon the calibrating substance mixes with the flushing gas in the test chamber to form the calibrating gas of predetermined composition. In addition, equipment is described for implementing the process of calibrating a gas metering instrument.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.