Coriolis flowmeter and method with improved meter zero

摘要

A Coriolis flowmeter (205) is provided. The Coriolis flowmeter (205) includes a flowmeter assembly (206) including one or more flowtubes (210), a driver (220) coupled to and configured to vibrate the flowmeter assembly (206), two or more pickoff sensors (230, 231) coupled to and configured to generate two or more vibration signals from the flowmeter assembly (206), and meter electronics (20) coupled to the driver (220) and the two or more pickoff sensors (230, 231), with the meter electronics (20) configured to provide a drive signal to the driver (220) and receive the resulting two or more vibration signals from the two or more pickoff sensors (230, 231), wherein the two or more pickoff sensors (230, 231) are affixed at two or more corresponding pickoff sensor locations that maximize a Coriolis vibration mode of the Coriolis flowmeter (205).

主权项

1. A Coriolis flowmeter (205), comprising:
a flowmeter assembly (206) including one or more flowtubes (210); a driver (220) coupled to and configured to vibrate the flowmeter assembly (206); two or more pickoff sensors (230, 231) coupled to and configured to generate two or more vibration signals from the flowmeter assembly (206); and meter electronics (20) coupled to the driver (220) and the two or more pickoff sensors (230, 231), with the meter electronics (20) configured to provide a drive signal to the driver (220) and receive the resulting two or more vibration signals from the two or more pickoff sensors (230, 231); wherein in the two or more pickoff sensors (230, 231) are affixed at two or more corresponding pickoff sensor locations that maximize a Coriolis vibration mode of the Coriolis flowmeter (205).