The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Oct. 07, 2003
Filed:
Jun. 28, 2001
Wolfgang Schrittenlacher, Hamburg, DE;
Stefan Kunter, Hamburg, DE;
Fafnir GmbH, Hamburg, DE;
Abstract
In a method of measuring the throughflow of a gas mixture, the gas mixture flows past a flow sensor which includes a heating device and a first temperature probe reacting to the temperature of the heating device. A temperature, which is characteristic of the temperature of a liquid above which the gas mixture stands as vapor, is measured with a second temperature probe. A first measurement signal characterizing the composition of the gas mixture and thus its heat dissipation capacity is produced using the known vapor-pressure curve of the liquid and the temperature of the liquid. A second measurement signal characterizing the throughflow of the gas mixture is produced using the heating power supplied to the heating device, the temperature of the first temperature probe and the first measurement signal. The method can be used when monitoring the gas return to a filling system and when controlling the gas pump used therein.