Coriolis frequency tracking by Henry, M, Tombs, M, Duta, M

“…Motion is induced in a conduit such that the conduit vibrates in a major mode of vibration having a major amplitude and a minor mode of vibration having a minor amplitude. …”

Enhanced measurement validation via ultra-precise spectral analysis by Henry, M

“…Typically, the meter is driven in a single natural mode of mechanical vibration; the frequency of this mode varies with fluid density, while the flow rate and density calibration coefficients assume a fixed frequency ratio to an adjacent vibration mode.…”

US patent no. 7,509,219 B2: Correcting frequency in flowtube measurements by Henry, M, Zamora, M

“…Techniques are described for accurately measuring a density or other parameter of a fluid traveling through a vibratable conduit, using a flowmeter. The techniques involve obtaining measurements of a frequency of vibration of the conduit, as a function of a phase difference between two sensors measuring the vibration. …”

US patent no. 7,065,455 B2: Correcting frequency in flowtube measurements by Henry, M, Zamora, M

“…Techniques are described for accurately measuring a density or other parameter of a fluid traveling through a vibratable conduit, using a flowmeter. The techniques involve obtaining measurements of a frequency of vibration of the conduit, as a function of a phase difference between two sensors measuring the vibration. …”

Fast Coriolis mass flow metering for monitoring diesel fuel injection by Leach, F, Karout, S, Zhou, F, Tombs, M, Davy, M, Henry, M

“…Due to the high level of vibration in the system, Prism-based notch filtering is used to suppress undesired modes of flowtube vibration in the sensor signal. …”

Prism signal processing of coriolis meter data for gasoline fuel injection monitoring by Henry, M, Zhou, F, Tombs, M, Leach, F, Davy, M, Malladi, M

“…In this paper we describe an augmented sensor signal filtering scheme which enables rapid tracking of the desired mode of flow tube vibration while notching out undesired modes. The new scheme is applied to a gasoline injection test bench where the vibrational interference is greater than for the previously described diesel system due to increased hydraulic shock. …”

Measurement validation for ICPS: Matrix pencil method for coriolis metering with liquid/gas flow by Ibryaeva, O, Semenov, A, Henry, M

“…Here we propose that a modified Matrix Pencil Method is able to track the modes of flowtube vibration excited by gas/liquid flow, and show the results of applying the technique to numerically simulated data.…”

High precision Coriolis mass flow measurement applied to small volume proving by Tombs, M, Henry, M, Zhou, F, Lansangan, R, Reese, M

“…This is achieved in part by using a novel signal processing technique which reduces the dominant component of the measurement noise, associated with so-called Coriolis mode vibration, with negligible loss of dynamic response. © 2006 Elsevier Ltd. …”

Matrix pencil method for coriolis metering with liquid/gas flow II: experimental results by Ibryaeva, O, Taranenko, P, Tombs, M, Zhou, F, Henry, M

“…A novel Matrix Pencil Method (MPM) was described, adapted to monitor two modes of vibration for the CMF flowtube, and its performance evaluated in simulation. …”

US patent no. 7,146,280 B2: Startup and operational techniques for a digital flowmeter by Henry, M, Zamora, M

“…Once the flowtube reaches a resonant mode of vibration, the digital flowmeter may transition to a positive feedback mode, in which a sensor signal representing a motion of the flowtube is fed back to the flowtube as a drive signal, as part of a feedback loop. …”

US patent no. 7,505,854 B2: Startup techniques for a digital flowmeter by Henry, M, Zamora, M

“…Once the flowtube reaches a resonant mode of vibration, the digital flowmeter may transition to a positive feedback mode, in which a sensor signal representing a motion of the flowtube is fed back to the flowtube as a drive signal, as part of a feedback loop. …”

Coriolis meter density errors induced by ambient air and fluid temperature differentials by Lindsay, G, Glen, N, Hay, J, Shariatipour, S, Henry, M

“…In addition to the mass flow rate, a Coriolis meter can measure fluid density based on the resonant frequency of the flow tube vibration. There is currently increasing interest in utilising this density measurement capability as the primary process value in applications such as precision control for fluid property conditioning, and fluid contamination monitoring.…”

US patent no. 6,950,760 B2: Startup and operational techniques for a digital flowmeter by Henry, M, Zamora, M

“…Once the flowtube reaches a resonant mode of vibration, the digital flowmeter may transition to a positive feedback mode, in which a sensor signal representing a motion of the flowtube is fed back to the flowtube as a drive signal, as part of a feedback loop. …”

US patent no. 7,904,256 B2: Startup techniques for a digital flowmeter by Henry, M, Zamora, M

“…Once the flowtube reaches a resonant mode of vibration, the digital flowmeter may transition to a positive feedback mode, in which a sensor signal representing a motion of the flowtube is fed back to the flowtube as a drive signal, as part of a feedback loop. …”

Wet gas measurement by Henry, M, Tombs, M

“… A multi-phase process fluid is passed through a vibratable flowtube. Motion is induced in the vibratable flowtube. …”

US patent no. 8,447,535: Wet gas measurement by Henry, M, Tombs, M

“…A multi-phase process fluid is passed through a vibratable flowtube. Motion is induced in the vibratable flowtube. …”

Wet gas measurement by Henry, M, Tombs, M

“… A multi-phase process fluid is passed through a vibratable flowtube. Motion is induced in the vibratable flowtube. …”

US patent no. 8,126,661: Wet gas measurement by Henry, M, Tombs, M

“…A multi-phase process fluid is passed through a vibratable flowtube. Motion is induced in the vibratable flowtube. …”

Wet gas measurement by Henry, M, Tombs, M

“… A multi-phase process fluid is passed through a vibratable flowtube. Motion is induced in the vibratable flowtube. …”

Wet gas measurement by Henry, M, Tombs, MS

“…A multi-phase process fluid is passed through a vibratable flowtube. Motion is induced in the vibratable flowtube. …”