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ASME MFC 11 2006 R2014

ASME MFC 11 2006 R2014

$98.04

ASME MFC-11 Measurement of Fluid Flow by Means of Coriolis Mass Flowmeters – Reaffirmed: 2014

Published By Publication Date Number of Pages
ASME 2006 40
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This Standard gives guidelines for the selection, installation, calibration, and operation of Coriolis flow meters for the determination of mass flow, density, volume flow, and other related parameters of flowing fluids. Coriolis flowmeters cover a family of devices with varying designs that depend on the Coriolis force generated by the fluid (liquid or gas) flowing through oscillating tube(s). The primary purpose of Coriolis flowmeters is to measure mass flow. However, some of these flowmeters also measure liquid density and temperature of the oscillating tube wall. From the measurements, the mass flow of liquid or gas, liquid density, liquid volume flow and other related quantities can be determined.

PDF Catalog

PDF Pages PDF Title
5 CONTENTS
FIGURES
TABLES
NONMANDATORY APPENDICES
6 FOREWORD
7 ASME MFC COMMITTEE Measurement of Fluid Flow in Closed Conduits
8 CORRESPONDENCE WITH THE MFC COMMITTEE
9 1 SCOPE
2 TERMINOLOGY, SYMBOLS, REFERENCES, AND BIBLIOGRAPHY
2.1 Definitions Copied From ASME MFC-1M
10 2.2 Definitions Specific for This Document
2.3 Symbols Used in This Standard
2.4 Abbreviations Used in This Standard
2.5 References and Bibliography
11 2.3 Symbols
14 3 MASS FLOW MEASUREMENT
3.1 Apparatus
3.1.1 Principle of Operation.
2.4 Abbreviations
15 3.1.2 Coriolis Flow Sensor.
3.1.3 Coriolis Transmitter.
3.2 Accuracy
3.1.1 Principle of Operation of a Coriolis Flowmeter
16 3.3 Factors Affecting Mass Flow Measurement
3.3.1 Density and Viscosity.
3.3.2 Multiphase Flow.
3.3.3 Temperature.
3.3.4 Pressure.
3.3.5 Installation.
3.4 Zero Adjustment
3.5 Calibration of Mass Flow
3.5.1 Definition
3.5.2 Calibration Guidelines.
17 4 CORIOLIS FLOWMETER SELECTION AND APPLICATION GUIDELINES
4.1 Coriolis Flowmeter Selection Considerations
4.1.1 Minimum Flow Rate qmin.
4.1.2 Maximum Flow Rate qmax.
4.1.3 Coriolis Flowmeter Pressure Loss Deltapc.
18 4.1.3-1 Examples of Coriolis Flowmeter Performance and Pressure Loss vs. Flow Rate
4.1.3-2 Examples of Coriolis Flowmeter Performance and Pressure Loss vs. Flow Rate
19 4.1.3-3 Examples of Coriolis Flowmeter Performance and Pressure Loss vs. Flow Rate
4.1.3-4 Examples of Coriolis Flowmeter Performance vs. Flow Rate
20 4.1.4 Coriolis Flowmeter Selection.
4.1.5 Design Pressure and Temperature.
4.2 Performance
4.3 Physical Installation
4.3.1 General.
4.3.2 Installation Criteria.
4.3.3 Piping Requirement.
4.3.4 Process Fluid Quality.
4.3.5 Orientation.
4.3.6 Flow Conditions and Straight Length Requirements.
21 4.3.7 Valves.
4.3.8 Cleaning.
4.3.9 Hydraulic and Mechanical Vibrations.
4.3.10 Flashing and/or Cavitation.
4.3.11 Pipe Stress and Torsion.
4.3.12 Cross-Talk Between Flow Sensors.
4.4 Process Conditions and Fluid Properties
4.4.1 General.
4.4.2 Application Considerations.
4.4.3 Nonhomogeneous and Homogeneous Mixtures See Para. 6.4.4 and Para. 7.2.2.3.
22 4.4.4 Influence of Process Fluid.
4.4.5 Temperature Effects.
4.4.6 Pressure Effects.
4.4.7 Pulsating Flow Effects.
4.4.8 Viscosity Effects.
4.5 Pressure Loss
4.6 Safety
4.6.1 General.
4.6.2 Hydrostatic Pressure Test.
4.6.3 Mechanical Stress.
4.6.4 Erosion.
4.6.5 Corrosion.
4.6.6 Housing Design.
23 4.6.7 Cleaning.
4.7 Transmitter
5 INSPECTION AND COMPLIANCE
6 DENSITY MEASUREMENT OF LIQUID
6.1 Principle of Operation
24 6.2 Specific Gravity
6.3 Accuracy
6.4 Factors Affecting Liquid Density Measurement
6.4.1 General.
6.4.2 Temperature.
6.4.3 Pressure.
6.4.4 Multiple Phases.
6.4.5 Flow Effect.
25 6.4.6 Corrosion, Erosion, and Coating.
6.4.7 Installation.
6.5 Liquid Density Calibration and Adjustment
6.5.1 General.
6.5.2 ManufacturerÅ’s Density Calibration.
6.5.3 Field Density Adjustment.
7 VOLUME FLOW MEASUREMENT UNDER METERING CONDITIONS
7.1 General
7.2 Volume Calculation for Liquids
7.2.1 Volume Accuracy for Liquids.
7.2.2 Special Influences for Liquids
7.2.2.1 Combined Measurement Effects.
26 7.2.2.2 Empty Pipe Effect.
7.2.2.3 Multiple Fluids Mixtures of Liquids and Gases.
7.2.3 Factory Calibration
7.2.3.1 Mass Flow and Density Calibration.
7.2.3.2 Liquid Volume Check.
7.3 Gas Volume Calculation
7.3.1 General.
7.3.2 Volume Calculation for Gas.
7.3.3 Volume Accuracy for Gas.
27 7.3.4 Special Influences for Gas
7.3.4.1 General.
7.3.4.2 Piping Effect.
7.3.5 Factory Calibration
7.3.5.1 Mass Flow.
8 ADDITIONAL MEASUREMENTS
8.1 General Considerations for Multicomponent Systems
8.1.1 Two-Component Liquid Systems with Known Densities.
8.1.2 Multicomponent Systems.
8.1.3 Multifluid Systems.
8.2 Immiscible Mixtures
8.2.1 General.
8.2.2 Mass Fraction.
8.2.3 Volume.
8.2.4 Net Mass Flow Rate.
28 8.2.5 Net Volume Flow Rate.
8.3 Miscible Liquids Containing Chemically Noninteracting Components
9 CORIOLIS FLOW MEASUREMENT UNCERTAINTY ANALYSIS PROCEDURE
9.1 Step 1: Data Reduction Equation
9.2 Step 2: Sensitivity Coefficients
9.3 Step 3: Numerical Values
29 9.4 Step 4: Combine Numerical Values
9.5 Numerical Examples
9.5.1 Example 1: Mass Flow.
9.5.2 Example 2: Volume Flow.
9.5.3 Example 3: User Measurement Uncertainty Based on the Calibration of Their Flowmeters in Their Laboratory.
31 A FLOW CALIBRATION TECHNIQUES
A-1 INTRODUCTION
A-1.1 Definition
A-1.2 Types of Calibration
A-2 CALIBRATION METHODS
A-2.1 General Considerations
A-2.2 Gravimetric Methods
A-2.3 Volumetric
A-2.4 Master Flowmeter Reference Flowmeter
A-2.5 Calibration Frequency
32 A-3 CALIBRATION PROCEDURES
A-4 CALIBRATION CONDITIONS
A-4.1 Flow Rate Stability
A-4.2 Zero Adjustment
A-4.3 Temperature and Pressure
A-4.4 Installation
A-5 CALIBRATION CERTIFICATE
33 B SAFETY CONSIDERATIONS AND SECONDARY CONTAINMENT OF CORIOLIS FLOWMETERS
B-1 Safety Considerations for the Selection of Coriolis Flowmeters
B-1.1 General Considerations
B-1.1.1 Materials.
B-1.1.2 Velocity.
B-1.1.3 Flow Sensor Pressure Rating.
B-1.1.4 Pressure Testing.
B-2 SECONDARY CONTAINMENT
B-2.1 Appropriate Use
B-2.2 Design Integrity
B-2.3 Pressure Testing
B-2.4 Selection of Appropriate Secondary-Containment Pressure Ratings
34 C CORIOLIS FLOWMETER SIZING CONSIDERATIONS

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