Electrochemical sensor
First Claim
1. An electrochemical sensor comprising:
- an electrically insulating, planar substrate having a planar surface, an electrochemically active sensor layer, which is applied by means of thick film techniques in at least one region of said planar substrate, said sensor layer containing at least one oxide of a metal belonging to one of the subgroups 7 and 8 of the Periodic Table of chemical elements as sensor component, and contacting in a measuring area an aqueous sample to be determined, at least one conductive path for signal pick-up which is applied on said planar substrate by means of thick film techniques and which is located entirely outside of said measuring area, and wherein said electrochemically active sensor layer extends from said measuring area as an electrically conductive bridge layer in a direction essentially in parallel with said planar surface of said substrate and outside said measuring area to contact said conductive path, wherein said bridge layer is electrically insulated and wherein a ratio of length l of said bridge layer outside of said measuring area to thickness d thereof is greater than 5.
2 Assignments
0 Petitions
Accused Products
Abstract
An electrochemical sensor includes an electrochemically active sensor layer (sensor spot), which is applied by means of thick film techniques in at least one region of an electrically insulating, planar substrate, the surface of the sensor layer being brought into contact in a measuring area with the aqueous sample to be determined. At least one conductive path for signal pick-up is also applied on the substrate by means of thick film techniques. The sensor layer contains at least one oxide of metal from subgroups 7 and 8 wof the Periodic Table as sensor component. The contact between the electrochemically active sensor layer and the conductor is effected via an electrically conductive bridge layer which extends from the measuring area in a direction essentially parallel to the surface of the substrate. The bridge layer consists of corrosion-resistant material.
-
Citations
30 Claims
-
1. An electrochemical sensor comprising:
-
an electrically insulating, planar substrate having a planar surface, an electrochemically active sensor layer, which is applied by means of thick film techniques in at least one region of said planar substrate, said sensor layer containing at least one oxide of a metal belonging to one of the subgroups 7 and 8 of the Periodic Table of chemical elements as sensor component, and contacting in a measuring area an aqueous sample to be determined, at least one conductive path for signal pick-up which is applied on said planar substrate by means of thick film techniques and which is located entirely outside of said measuring area, and wherein said electrochemically active sensor layer extends from said measuring area as an electrically conductive bridge layer in a direction essentially in parallel with said planar surface of said substrate and outside said measuring area to contact said conductive path, wherein said bridge layer is electrically insulated and wherein a ratio of length l of said bridge layer outside of said measuring area to thickness d thereof is greater than 5. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14)
-
-
15. An electrochemical sensor comprising:
-
an electrically insulating, planar substrate having a planar surface, an electrochemically active sensor layer, which is applied by means of thick film techniques in at least one region of said planar substrate, said sensor layer containing at least one oxide of a metal belonging to one of the subgroups 7 and 8 of the Periodic Table of chemical elements as sensor component, and contacting in a measuring area an aqueous sample to be determined, at least one conductive path being provided for signal pickup, which is also applied on said planar substrate by means of thick film techniques and which is located entirely outside of said measuring area, wherein said electrochemically active sensor layer contacts an electrically conductive bridge layer extending from said measuring area in a direction essentially in parallel with said surface of said planar substrate and outside said measuring area to said conductive path, wherein said bridge layer consists of corrosion resistant material and wherein a ratio of length l of said bridge layer outside of said measuring area to thickness d thereof is greater than 5. - View Dependent Claims (16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30)
-
Specification