Sodium chloride solution humidified sensor
OwnerStephen D. Tuomelainventor
Life of this patent
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Abstract
A galvanic measuring device for detecting oxygen content in a gas flow, having a sealed gas flow chamber and a layer of sodium chloride saturated sponge material lining the interior of the gas flow chamber, for providing a constant source of humidity to the chamber.
Claims7
An apparatus for detecting oxygen in a test gas flow through a galvanic cell of the type which develops a current flow between a cell cathode and anode representative of oxygen content in the test gas;
- comprising:
- a. a pair of galvanic cells inside a sealed enclosure, said cells connected in series gas flow arrangement, with an input adapted for connection to a source of test gas and an output adapted for connection to a gas exhaust;
- b. means for electrically connecting said galvanic cells to provide an electrical signal representative of the oxygen content of said gas flow;
- and
- c. an absorbent material inside said sealed enclosure, said absorbent material being saturated with a sodium chloride solution and water.
An apparatus for detecting oxygen in a test gas flow through a galvanic cell of the type which develops a current flow between a cell cathode and cell anode representative of oxygen content in the test gas, comprising:
- a. an enclosure having a sealed interior chamber;
- b. at least one galvanic cell in said sealed interior chamber, said at least one galvanic cell having an input outside said chamber for receiving a flow of test gas, and an output for exhausting said flow of test gas;
- c. a water permeable section of tubing in said chamber and in series flow arrangement of said test gas;
- d. a layer of absorbent sponge material applied against an inside surface of said chamber, said layer having a saturated sodium chloride and water solution;
- and
- e. means for electrically connecting said at least one galvanic cell for providing an electrical signal representative of oxygen content of said test gas.
Dependencies are inferred from the claim text.