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Measurement principles
As a practical application of the Coriolis effect, the Coriolis mass flow meter operating principle involves inducing a vibration of the
flow tube through which the fluid passes. The vibration, though it is not completely circular, provides the rotating reference frame
which gives rise to the Coriolis effect. While specific methods vary according to the design of the flow meter, sensors monitor and analyze changes in frequency, phase shift, and amplitude of the vibrating flow tubes. The changes observed represent the mass flowrate and density of the fluid.
Mass flow measurement
The measuring tubes are forced to oscillate producing a sine wave. At zero flow, the two tubes vibrate in phase with each other.
When flow is introduced, the Coriolis forces cause the tubes to twist resulting in a phase shift. The time difference between the
waves is measured and is directly proportional to the mass flow rate.
Accuracy and repeatability on liquids and slurries
Accuracy and repeatability on gases :
Liquid flow rates
Micro Motion has adopted the term nominal flow rate, which is the flow rate at which water at reference conditions causes
approximately 14.5 psig (1 barg) of pressure drop across the meter.
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Annual turnover ：$700 Million - $900Million Export Percentage ：60%
FOB Price: USD 500~5000 / Piece Min Order: 1 Pieces
Supply Ability: 1000 Pieces per Month
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Brand Name: Rosemount Shipment: within 7 days after payment
Model Number: Rosemount CMF
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