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Rosemount CMF Mass Flowmeter

Rosemount CMF Mass Flowmeter Ultimate real world performance Unchallengeable ELITE performance on liquid mass flow, volume flow, and densitymeasurements Best-in-class gas mass flow measurement Reliable two-phase flow measurement for the most challenging applications Designed to minimize process,...

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Rosemount CMF Mass Flowmeter

               Rosemount CMF Mass Flowmeter

 

Ultimate real world performance
Unchallengeable ELITE performance on liquid mass flow, volume flow, and densitymeasurements
Best-in-class gas mass flow measurement
Reliable two-phase flow measurement for the most challenging applications
Designed to minimize process, mounting, and environmental effects

Best fit-for-application
Scalable platform for the widest range of line size and application coverage including hygienic,
cryogenic, high pressure, and high temperature Available with the broadest range of I/O offerings
highlighted by expansive digital protocol support Superior measurement confidence
Smart Meter Verification delivers complete, online verification of device health and
performance, continuously or on-demand at the press of a button
Globally leading ISO/IEC 17025 calibration facilities offers best in class uncertainty of
±0.014%

Intelligent sensor design mitigates the need for
zero calibration in the field

 

Achieving the ultimate flow fit for your application

Able to achieve the best fit for your flow measurement with a wide range of tube designs
and flow rate coverage to best serve your application

Peak performance in a drainable design with a variety of industry approvals for use in strictly
governed sanitary applications

Scalable platform for a broad array of application coverage including hygienic, cryogenic, and high
pressure

 

Industry-leading capabilities that unleash your process potential

Available with the most extensive offering of transmitter and mounting options for maximum
compatibility with your system

 

State of the art, ISO-IEC 17025 compliant calibration stands achieving ±0.014% uncertainty
drive best in class measurement accuracy

 

The most robust communication protocol offering in the industry including Smart Wireless
True multi-variable technology measures necessary flow and density process variables
simultaneously



Widest selection of safety, country, and custodytransfer approvals

 

 



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 flow rate 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.

Performance specifications


Reference operating conditions
For determining the performance capabilities of our meters, the following conditions were observed/utilized:
Water at 68 to 77 °F and 14.5 to 29 psig (20 to 25 °C and 1 to 2 barg)
Accuracy based on industry leading accredited calibration stands according to ISO 17025
All models have a density range up to 5 g/cm3 (5000 kg/m3)

 



Accuracy and repeatability on liquids and slurries

 

Liquid flow rates
Nominal flow rate
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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