Sample chamber
First Claim
1. In a sensor having a plurality of electrodes positioned in a sample chamber through which a fluid to be tested is flowed, said sample chamber having a flow path, a sample inlet and outlet each having a cross-sectional area less than the cross-sectional area of a portion of said chamber, the improvement comprising:
- a velocity compensator comprising a structural barrier mounted in said flow path between said inlet and outlet to reduce said cross-sectional area of said chamber in said flow path and to substantially maintain stability in fluid velocity when flowing through said chamber.
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Abstract
A solid state, multi-use electrochemical sensor having an electrically nonconductive substrate, a working electrode, and a semi-permeable membrane covering the working electrode. The working electrode includes an electrically conductive material adhered to a portion of the substrate. A first portion of the conductive material is covered with an electrically insulating dielectric coating, and a second portion of the conductive material is covered with an active layer. The active layer includes a catalytically active quantity of an enzyme carried by platinized carbon powder particles, which are distributed throughout the active layer. A sensor package for incorporating a sensor is provided.
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Citations
3 Claims
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1. In a sensor having a plurality of electrodes positioned in a sample chamber through which a fluid to be tested is flowed, said sample chamber having a flow path, a sample inlet and outlet each having a cross-sectional area less than the cross-sectional area of a portion of said chamber, the improvement comprising:
a velocity compensator comprising a structural barrier mounted in said flow path between said inlet and outlet to reduce said cross-sectional area of said chamber in said flow path and to substantially maintain stability in fluid velocity when flowing through said chamber. - View Dependent Claims (2, 3)
Specification