Vented oxygen cell

摘要

An electrochemical oxygen sensor is provided. The electrochemical sensor includes a housing having first and second compartments, a sensing electrode disposed within the first compartment of the housing, a consumable anode disposed within the second compartment of the housing, a porous separator between the sensing electrode and consumable electrode that separates the first and second compartments and an electrolyte saturating the porous separator and consumable anode. A first aperture on a first end of the housing extends between an outside surface of the housing and first compartment that allows gas access to the sensing electrode. A venting system on a second, opposing end of the housing includes a second aperture extending between the outside surface of the housing and second compartment and has a predetermined permeability that controls pressure in the second compartment and loss of moisture from the sensor.

主权项

1. An apparatus comprising:
an electrochemical oxygen sensor, the electrochemical sensor further comprising:
a housing having first and second compartments;a sensing electrode disposed within the first compartment of the housing;a consumable anode disposed within the second compartment of the housing;a porous separator between the sensing electrode and consumable anode that separates the first and second compartments;an electrolyte saturating the porous separator and consumable anode;a first aperture on a first end of the housing extending between an outside surface of the housing and first compartment that allows gas access to the sensing electrode; anda venting system on a second, opposing end of the housing including a second aperture extending between the outside surface of the housing and second compartment and having a predetermined permeability that controls pressure in the second compartment and loss of moisture from the sensor, wherein the predetermined permeability further comprises a range of 2000 to 6000 Gurley seconds.