AN ELECTROCHEMICAL SENSOR

摘要

The measuring component of an electrochemical sensor has an inert carrier electrode whose parts projecting from an electrically insulating sheath are covered by an electrical conductor consisting of a stable polymer coating in an aqueous medium. To produce a CO2 electrode, the measuring component may be arranged in a casing (17) filled with an H2CO3/HCO3 buffer, the aperture (18) on the sample side of which is closed off by a CO2-permeable diaphragm on the polymer coating (3) of the measuring component (1) or, to form a reference electrode, it may be arranged in an electrolyte-filled casing (13) with a diaphragm (15) on the aperture (14) on the sample side.