Apparatus for the measuring and supplying a controlled quantity of a gas

Claim 1

APPARATUS FOR MEASURING AND CONTROLLING THE PARTIAL PRESSURE OF OXYGEN, COMPRISING: FIRST AND SECOND AXIALLY ALIGNED TUBULAR CONDUIT SECTION OF A MATERIAL CAPABLE OF CONDUCTING ELECTRICITY PREDOMINATELY BY TH TRANSFER OR MIGRATION OF OXYGEN IONS; A THIRD TUBULAR CONDUIT SECTION ALIGNED WITH AND SPACING SAID FIRST AND SECOND CONDUIT SECTIONS AND FORMING THEREWITH A TUBULAR CONDIT CELL, SAID THIRD TUBULAR CONDUIT SECTION BEING OF A MATERIAL WHICH IS SUBSTANTIALLY NOT CAPABLE OF CONDUCTING ELECTRICITY BY THE TRANSFER MIGRATION OF OXYGEN IONS; FIRST AND SECOND ELECTRODE LAYERS SUBSTANTIALLY COVERING THE OUTSIDE SURFACE RESPECTIVELY OF SAID FIRST AND SECOND TUBULAR SECTIONS; A THIRD ELECTRODE LAYER SUBSTANTIALLY COVERING THE INSIDE SURFACE OF SAID FIRST, SECOND AND THIRD TUBULAR SECTIONS; VOLTAGE MEASURING MEANS ELECTRICALLY CONNECTED BETWEEN SAID FIRST AND THIRD ELECTRODE LAYERS FOR MEASURING THE DIFFERENCE BETWEEN PARTIAL OXYGEN PRESSURES INSIDE AND OUTSIDE OF SAID TUBULAR CONDUIT CELL; AND MEANS ELECTRICALLY CONNECTED BETWEEN SAID SECOND AND THIRD ELECTRODE LAYERS FOR APPLYING A VOLTAGE THEREBETWEEN TO CAUSE OXYGEN TO BE TRANSFERRED INTO OR OUT OF SAID TUBULAR CONDUIT CELL.