A system and method for calibrating a sensor of a characteristic monitoring system in real time utilizes a self-calibration module for periodic determination of, and compensation for, the IR drop across unwanted resistances in a cell. A current-interrupt switch is used to open the self-calibration module...http://www.google.ca/patents/US7774038?utm_source=gb-gplus-sharePatent US7774038 - Real-time self-calibrating sensor system and method
