Device and method for measuring the concentration of a substance in a fluid

摘要

The system has a measuring cell (2) for determining a concentration of a substance e.g. glucose, in a liquid e.g. blood. The measuring cell has a sensor (14) that produces a signal corresponding to the concentration of the substance when the fluid is supplied to the sensor over a channel (4) and is discharged from the sensor over another channel (6). A measuring device for measuring a conductivity of the fluid flowing over the sensor is coupled to the measuring cell. An independent claim is also included for a method for determining a concentration of a substance in a liquid.