Verfahren und Vorrichtung zur Bereitstellung einer Gasmischung

Details

Veröffentlichungs-Nr.

EP2667276

Aktenzeichen

EP12169384

Anmeldetag

24. Mai 2012

Veröffentlichung

8. November 2017

Erteilung

8. November 2017

Rechtsraum

EP

IPC

B01F15/00B01F3/02G05D11/13

Abstract

There is provided a gas mixer arrangement comprising a first gas source for supplying a first gas; a second gas source for supplying a second gas different from said first gas; a first valve for regulating the flow of the first gas; a second valve for regulating the flow of the second gas; a mixer located downstream of the first and second valves and arranged, in use, to mix the first and second gases to provide a mixed gas; a meter arranged to measure the average molecular weight of the mixed gas, comprising a high-frequency planar piezoelectric crystal oscillator in contact with the mixed gas and a sensor operable to determine atmospheric pressure; and a controller operable, in response to the measured average molecular weight of said mixed gas, to control at least one of said first and second valves in order to control the relative proportion of the first and second gases in said mixed gas.

Anmelder

Firma

AIR PRODUCTS AND CHEMICALS, INC.

Land

🇺🇸 USA

Fachgebiete