Patent ID: 6974705

Claim:
A method for determining a mathematical function representative of measured concentration versus actual concentration of a gas in a liquid when the gas is at a concentration in the liquid above a solubility threshold for the gas in the liquid, the method comprising: obtaining the solubility threshold for the gas in the liquid; ensuring that the device is calibrated for concentrations of about 0% of the gas in the liquid and about 100% of the gas; using the device to conduct sufficient measurements of the gas concentration at known actual concentrations to permit generation of a first mathematical function representing device-measured concentrations versus actual concentrations of the gas in the liquid below the solubility threshold of the gas in the liquid; applying the first mathematical function to deduce a theoretical device-response at about the solubility threshold; and using the theoretical device-response at about the solubility threshold and the device calibrated response at 100% gas concentration to determine the mathematical function representative of the response of the gas-in-liquid concentration measurement device when the concentration of gas is above the solubility threshold, the mathematical function defining the device-measured concentration versus actual concentration for the region above the solubility threshold wherein the actual concentration for the region above the solubility threshold includes a solubilized amount of gas that is solubilized in the liquid and the gas that is present in bubble state.