Method of determining the throughflow of a gas mixture

Details Method of determining the throughflow of a gas mixture Method of determining the throughflow of a gas mixture

G - Physics

01

F

G01F 1/68 (2006.01) B67D 7/04 (2010.01) B67D 7/08 (2010.01) G01F 1/688 (2006.01) G01F 1/696 (2006.01)

Patent

CA 2351960

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 vapour 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 by means of the known vapour-pressure curve of the liquid and the temperature of the liquid. A second measurement signal characterizing the throughflow of the gas mixture is produced by means of 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.

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