METER ELECTRONICS AND METHODS FOR VERIFICATION DIAGNOSTICS FOR A FLOW METER

摘要

Meter electronics (20) for a flow meter (5) is provided according to an embodiment of the invention. The meter electronics (20) includes an interface (201) for receiving a vibrational response from the flow meter (5) and a processing system (203) in communication with the interface (201). The vibrational response is a response to a vibration of the flow meter (5) at a substantially resonant frequency. The processing system (203) is configured to receive the vibrational response from the interface (201), determine a frequency (?₀) of the vibrational response, determine a response voltage (V) and a drive current (I) of the vibrational response, measure a decay characteristic (?) of the flow meter (5), and determine the stiffness parameter (K) from the frequency (?₀), the response voltage (V), the drive current (I), and the decay characteristic (?).