ELECTROCHEMICAL SENSOR OF OXYGEN Russian patent published in 1994 - IPC

FIELD: determination of oxygen amount in gas medium. SUBSTANCE: sensor has electrolyte and electrodes, placed in a body. Butts of the body are hermetically sealed by gas-diffusion and gas-impermeable membranes. During sensor being kept in storage, gas chamber, located over gas-diffusion membrane and joining cathode, is divided into two parts by two layer partition. Lower part of the chamber between gas-diffusion membrane and the partition is filled with inert gas and upper part is filled with air and has two holes gas inlet and outlet. Lower layer of the partition is made as a porous fluoroplastic membrane and upper layer is made of gas-impermeable polymer film. EFFECT: sensor is used to determine oxygen amount in gas medium. 1 dwg, 1 tbl