Method to determine when to verify a stiffness coefficient of a flowmeter

A method (300) for determining when to verify a stiffness coefficient K (202, 204) in a flowmeter (5) comprising receiving a first stiffness coefficient K (202), a plurality of temperatures T (206), a plurality of response frequencies ω (208), and a plurality of driver currents I (210), determining an average temperature T (212), a standard deviation temperature T (214), an average response frequency ω (216), a standard deviation response frequency ω (218), an average driver current I (224), and a standard deviation driver current I (226). A first subsequent value (236) comprising a subsequent temperature T (228), a subsequent response frequency ω (230), or a subsequent driver current I (232) is received. Upon determining that the first subsequent value (236) is outside a first respective range (237), a determination of a second stiffness coefficient K (204) is initiated.