Electrochemical gas sensor with folded membrane strip
AssigneeDragerwerk Aktiengesellschaft
InventorPeter Tschuncky
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Abstract
An electrochemical gas sensor is provided which can be assembled economically and in a few steps. The electrodes (1, 2, 3) with associated electric lines are applied in a planiform manner to a membrane strip, which is impermeable to the electrolyte but permeable to gases. The membrane strip (6) is deposited in the sensor housing in a zigzag-folded pattern, so that the membrane strip limits the opening of the sensor housing for the entry of the measured gas. The electrodes (1, 2, 3) are arranged stacked in the sensor housing (5, 7) at spaced locations from one another due to the membrane strip (6) deposited in a zigzag-folded pattern.
Claims20
An electrochemical gas sensor comprising:
- a sensor housing
- at least two electrodes in said sensor housing;
- an electrolyte in said sensor housing, said housing having an opening for the entry of the measured gas;
- a gas-permeable membrane strip that is impermeable to the electrolyte, said gas-permeable membrane strip having electric lines, said electrodes being applied to said gas-permeable membrane strip in a planiform manner, said membrane strip being deposited in said sensor housing in a zigzag-folded pattern with the membrane strip limiting said opening of the sensor housing for the entry of the measured gas and said electrodes are arranged stacked at spaced locations from one another based on the zigzag-folded pattern of the gas-permeable membrane strip.
An electrochemical gas sensor comprising:
- a first electrode;
- a second electrode
- a sensor housing;
- an electrolyte in said sensor housing, said housing having an opening for the entry of a gas to be measured;
- a gas-permeable membrane strip disposed in the sensor housing with at least one fold, providing at least a first portion on one side of said fold and a second portion on another side of said fold, said first electrode being connected to said gas-permeable membrane strip first portion and said second electrode being connected to said gas-permeable membrane strip second portion.
An electrochemical gas sensor formed by the steps of:
- providing a gas-permeable membrane strip that is impermeable to an electrolyte;
- providing electric lines on the membrane strip;
- applying electrodes to the gas-permeable membrane strip in a planiform manner;
- folding the membrane strip in a zigzag-folded pattern with adjacent electrodes on the membrane strip separated by at least one zigzag fold;
- depositing the membrane strip in a sensor housing;
- and
- filling the sensor housing with the electrolyte.
Dependencies are inferred from the claim text.