Patent ID: 7185526
Filing Date: 2007-03-06
Classification: G01F,G01N

Abstract:
1. A method of calibrating a flowmeter having a vibratable flowtube and at least one sensor associated with the vibratable flowtube, the method comprising: vibrating the flowtube in a first operational environment, the first operational environment including a material present in the flowtube with a first density; receiving a first sensor signal from the sensor, the first sensor signal representative of the vibration of the flowtube in the first operational environment; determining a first calibration value based on the first sensor signal; storing the first calibration value in association with the first operational environment; vibrating the flowtube in a second operational environment; receiving a second sensor signal from the sensor, the second sensor signal representative of the vibration of the flowtube in the second operational environment; determining a second calibration value based on the second sensor signal; storing the second calibration value in association with the second operational environment; determining a current density of a current material that is present in the flowtube; determining whether the current density corresponds to the first density or the second density; and accessing the first calibration value for use during an obtaining of a mass flow measurement if it is determined that the current density corresponds to the first density.