Electrochemical sensor
First Claim
1. An electrochemical sensor comprising first and second working electrodes, the electrodes being located on a gas permeable support, the sensor having a gas impermeable portion separating the first and second working electrodes.
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Accused Products
Abstract
A dual gas sensor is described, having first and second working electrodes separated by a gas impermeable portion. The electrodes are preferably located on a gas permeable polymer support, with the gas impermeable portion being formed by compression of the permeable support. The sensor may also include one or more filters for location adjacent the electrodes to filter certain gases from the air. The preferred sensor is able to detect carbon monoxide and hydrogen sulfide. The sensor housing is formed with four connection pins, allowing a standard sensor housing to be used for dual sensors as well as single sensors having a dummy pin.
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Citations
18 Claims
- 1. An electrochemical sensor comprising first and second working electrodes, the electrodes being located on a gas permeable support, the sensor having a gas impermeable portion separating the first and second working electrodes.
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16. An electrochemical sensor comprising a working electrode, a reference electrode, and a counter electrode, the sensor further comprising a base portion having three pins connected to respective electrodes, and a fourth dummy pin which is not connected to an electrode.
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17. An electrochemical sensor comprising first and second working electrodes, a reference electrode, and a counter electrode, the sensor further comprising a base portion having four pins connected to respective electrodes.
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18. An electrochemical sensor having a base portion, and an electrolyte reservoir located adjacent the base portion, the base portion further comprising an opening into which the reservoir and electrolyte contained therein ex tend.
Specification