ASME MFC-11:2006 pdf download Measurement of Fluid Flow by Means of Coriolis Mass Flowmeters
SCOPE
ASME MFC-11 establishes common terminology andgives guidelines for the selection, installation, calibration, and operation of Coriolis flowmeters for the determination of mass flow, density, volume flow, and otherparameters. The content of this Standard is applied to theflow measurement of liquids, gases, mixtures of gasesmultiphase flows and miscible and immiscible mixturesof liquids.
TERMINOLOGYSYMBOLS，REFERENCES，ANDBIBLIOGRAPHY
Paragraph 2.1 lists definitions from ASME MFC-1Mused in ASME MFC-11.
Paragraph 2.2 lists definitions specific to thisStandard.
Paragraph 2.3 lists symbols (see Table 2.3) used in thisStandard (see notes and superscripts).
Paragraph 2.4 lists abbreviations (see Table 2.4) usedin this Standard.
Paragraph 2.5 lists references used in this Standardand a bibliography.
2.1 Definitions Copied From ASME MFC-1M
accuracy: the degree of freedom from error, the degreeof conformity of the indicated value to the true valueof the measured quantity.
calibration:
(a) the process of comparing the indicated flow to atraceable reference standard
(b) the process of adjusting the output of a device tobring it to a desired alue, within a specified tolerancefor a particular value of the input.
cavitation: the implosion of vapor bubbles formed afterflashing when the local pressure rises above the vaporpressure of the liquid. See also flashing.
Coriolis flowmneter: a device consisting of a flow sensorand a transmitter which measures the mass flow bymeans of the Coriolis force generated by flowing fluidthrough oscillating tube(s); it may also provide measurements of density and temperature.cross-talk: if two or more Coriolis flowmeters are to bemounted close together, interference through mechanical coupling may occur. This is often referred to as crosstalk. The manufacturer should be consulted for methodsof avoiding cross-talk.
density calibration factor(s): calibration factor(s) associ-ated with density measurement.
drive system: means for inducing the oscillation of thetube(s).
flashing: the formation of vapor bubbles in a liquid whenthe local pressure falls to or below the vapor pressureof the liquid, often due to local lowering of pressurebecause of an increase in the liquid velocity. See alsocavitafion.
flow calibration factor(s): calibration factor(s) associatedwith mass flow measurement.
flow sensor: a mechanical assembly consisting of an oscil-lating tube(s), coil drive system, oscillating tube deflection measurement-sensor(s),flanges/fittings,anchousing.
housing: environmental protection of the flow sensor.
oscillating tube(s): tubes(s) through which the fluid to bemeasured flows
rangeability: Coriolis flowmeter rangeability is the ratioof the maximum to minimum flowrates or Reynoldsnumber in the range over which the flowmeter meets aspecified uncertainty and/or accuracy
repeatability of measurement (qualitative): the closeness ofagreement among a series of results obtained with thesame method on identical test material, under the sameconditions (same operator, same apparatus, same laboratory, and short intervals of time).
repeatability ofmeasurement (quantitative): the value belowwhich the absolute difference between any two singletest results obtained under the same conditions,seerepeatability ofmeasurement (qualitative)l, may be expectedto lie with a specified probability. In the absence of otherindications, the probability is 95%reproducibility (quantitative): the closeness of agreementbetween results obtained when the conditions of measurement differ; for example, with respect to differenttest apparatus, operators, facilities, time intervals, etc.