Patent ID: 7275007

Claim:
Method for zero correction of a measuring device, in particular a flowmeter, wherein a number of zero settings are carried out with the device and/or process in different states, each zero setting correlating a zero value to a corresponding set of device and/or system parameters and storing the zero value and the corresponding set of device and/or system parameters in an electronic memory, whereby at least one zero setting is carried out prior to or during installation of the measuring device, and whereby at least one further zero setting is carried out as zero adjustment/correction routine during operation, wherein for a zero adjustment/correction routine during operation, the zero value and the corresponding set of device and/or system parameters are automatically added to the memory, wherein in normal operation of the measuring device, a stored set of device and/or system parameters that matches the respectively current system and/or device parameters is sought, so that the measured zero value assigned to this set of parameters is used as the current zero value, and wherein two nearest sets of device and/or system parameters that are stored in the memory are sought for a current set of device and/or system parameters and the current zero value is determined by interpolation from the measured zero values assigned to these nearest sets of parameters.