Abstract: There is described a meter for the flow rate or the speed of a gas stream, by converting an electric potential metering, which comprises a pair of so-called outer tubular electrodes connected to an electric voltage source and through which the gas stream will pass, said electrode pair forming with a common electrode two series-connected electric fields, as well as an ion source which is located inside the one electrode while the common electrode is connected to a measuring circuit responsive to the potential of said electrode, in which both outer electrodes are arranged on either side and with a spacing relative to the common electrode which is also a tube-like shape.
Type:
Grant
Filed:
September 29, 1977
Date of Patent:
October 24, 1978
Assignee:
Institut National des Radio-Elements - Nationaal Instituut voor Radio-Elementen, en abrege: I.R.E.
Inventors:
Jacques Depoitier, Ovidio Monaco, Michel Destabelle
Abstract: Axially aligned conductive metal cylindrical members on opposite sides of a printed circuit plate define a first measuring chamber and a second reference chamber on opposite sides thereof. The bottom of one cylindrical member forms the first electrode of the reference chamber and a plate closing off the end of the measuring chamber remote from the printed circuit plate forms the first electrode of the measuring chamber.
Type:
Grant
Filed:
July 12, 1976
Date of Patent:
April 4, 1978
Assignee:
Institut National des Radio-elements - Nationaal Instituut voor Radio-elementen, en abrege: "I.R.E."