Compensating for frequency change in flowmeters

Data processing: measuring – calibrating – or testing – Measurement system in a specific environment – Mechanical measurement system

Reexamination Certificate

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C324S092000

Reexamination Certificate

active

07599807

ABSTRACT:
Motion is induced in a conduit that contains a fluid. The motion is induced such that the conduit oscillates in a first mode of vibration and a second mode of vibration. The first mode of vibration has a corresponding first frequency of vibration and the second mode of vibration has a corresponding second frequency of vibration. The first and the second frequencies vary with temperature. A first temperature that influences the first mode of vibration is determined and a second temperature that influences the second mode of vibration is determined. A property of the fluid is determined based on the first temperature and the second temperature such that the property is compensated for the first or second frequencies variation with temperature.

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