Patent ID: 7337084

Claim:
A method comprising: detecting a manual operation of an input device that is connected to a controller of a flowmeter, the input device being connected to a casing of the controller and including one of a switch, a physical button, a turn-knob, a dial, a toggle, or a lever, and the controller being operable to output measurements of a mass flow rate of a fluid within a vibratable flowtube associated with the flowmeter; determining that the manual operation of the input device corresponds to a request for checking a zero flow rate calibration value that is present during a time of zero flow of the fluid within the flowtube; performing an averaging operation on a series of the measurements over a pre-determined time period and during the time of zero flow, to obtain an averaged zero flow calibration value; and outputting the zero flow calibration value, in response to the request, wherein determining that the manual operation of the input device corresponds to the request for checking the zero flow rate calibration value includes determining that the input device is activated for greater than a second predetermined time.