Patent ID: 7979230

Claim:
A method of calibrating a flowtube, the method comprising: passing a fluid through a vibratable flowtube; detecting a manual operation of an input device that is connected to a controller of a flowmeter that includes the vibratable flowtube, the controller being configured to output measurements of a property of the fluid within the flowtube; determining that the manual operation of the input device corresponds to a request to initiate and perform a zero flowrate calibration operation based on receiving an indication that the input device is activated for greater than a pre-defined amount of time; establishing a zero-flow condition in the flowtube based on the request; determining an average value of a property of the fluid over a pre-determined time period during the zero-flow condition based on measurements during the zero-flow condition; determining a calibration value based on the average value of the property of the fluid determined during the zero-flow condition; and presenting the calibration value.