Patent ID: 6963809

Claim:
A method for determining a gas mixture consumption by means of a gas meter, which comprises a measuring means for determining a gas mass flow rate and a measuring electronics, wherein for a direct calibration of the gas meter as a power or energy measuring unit sensor signal values (S n ) are determined as a function of a flow rate of a calibration gas (N 2 air) and are stored in the gas meter in the form of a sensor calibration curve (Fn(Sn)), the sensor calibration curve (F n (Sn)) is multiplied by a signal conversion factor (f N2-CH ) and by a calorific value factor (H CH ) for a basic gas mixture (CH), and the product obtained determines a power (P) or an energy consumption value (E), wherein the signal conversion factor (f N2-CH ) takes account of the difference in sensitivity of the measuring means when using the basic gas mixture instead of the calibration gas (N 2 air) and wherein a measured energy consumption value (E) is multiplied by a correction factor ({overscore (H)}/H CH ), which takes account, at least approximately, of the calorific value ({overscore (H)}) of a supplied gas mixture.