suitable for single use, selbstkalibrierender sensor for a clinical chemical analysegeraet.

摘要

A single-use sensing device (12) for a clinical chemistry analyzer system (10) includes a carrier (16) which supports a capillary passage (20). Species selective sensors (28A-28D) are located within a test chamber portion (26) of the capillary passage (20). A rotatable multichamber reservoir (36) having a calibrant chamber (40) for holding calibrant fluid and a sample chamber (42) for containing a sample fluid is rotated first to a calibrant test position and then to a sample test position. In the calibrant test position, the calibrant chamber (40) is connected to the inlet (22) of the capillary passage (20) to draw calibrant fluid into the test chamber (26). In the sample test position, the sample chamber (42) is connected to the inlet (22) to draw sample fluid into the test chamber (26) and purge the calibrant fluid from the test chamber (26). A set of sensor readings are taken at each position, and concentration values are derived from the two sets of readings.