Sensing elements and methods for uniformly making individual sen

Details Sensing elements and methods for uniformly making individual sen Sensing elements and methods for uniformly making individual sen

1993-11-30

1996-04-16

Westin, Edward P.

Radiant energy

Photocells; circuits and apparatus

Optical or pre-photocell system

422 8205, 422 91, 436 68, 436136, 128634, G01N 3350

Patent

active

055085091

ABSTRACT:
Sensing elements, useful in sensing the concentration of a gas, e.g., carbon dioxide, in a medium, e.g. blood, and methods for making such sensing elements are disclosed. In one embodiment, the method comprises continuously placing a sensing composition precursor in contact with a continuous web, forming a continuous sensing composition from the precursor, and applying a continuous opaque film to the sensing composition. A plurality of individual sensing elements are formed from this composite structure. These sensing elements, which each have very similar sensing characteristics, are placed in a sensor fixture for use.

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