Patent ID: 9618495
Date: 2017-04-11
CPC Classifications: G01N

Claim:
1. A carbon quantifying cell configured to receive a liquid, comprising; two or more electrodes positioned at least partially in a liquid; and meter electronics including a processor coupled to the two or more electrodes and configured to: operate the two or more electrodes and according to a program to at least partially oxidize carbon materials in the liquid, apply an AC voltage of a predetermined amplitude across the two or more electrodes during the program, receive an electrical response of the liquid to the program, comprising; measure a resulting AC current across the two or more electrodes, determine a ratio of amplitudes of the measured AC current and the applied AC voltage, and determine a phase angle difference between the applied AC voltage and the measured AC current, and quantify the carbon materials in the liquid using the electrical response to detect interfering materials in the liquid and using liquid impedance calculated from the measured ratio of amplitudes and the phase angle difference.