ASME MFC 12M 2006 R2014
$98.04
ASME MFC-12M Measurement of Fluid Flow in Closed Conduits Using Multiport Averaging Pitot Primary Elements – Reaffirmed: 2014
| Published By | Publication Date | Number of Pages |
| ASME | 2006 | 24 |
This Standard, provides information on the use of multiport averaging Pitot head-type devices used to measure liquids and gases. The Standard applies when the conduits are full and the flow (a) has a fully developed profile; (b) remains subsonic throughout the measurement section; (c) is steady or varies only slowly with time; (d) is considered single-phase. A differential pressure transmitter or other pressure measuring device, known as a secondary element, must be used with a multiport averaging Pitot primary element to produce a flow rate measurement. Although multiport averaging Pitot primary elements are sometimes used in noncircular conduits, such applications are beyond the scope of this Standard.
PDF Catalog
| PDF Pages | PDF Title |
|---|---|
| 5 | CONTENTS FIGURES TABLES NONMANDATORY APPENDICES |
| 6 | FOREWORD |
| 7 | COMMITTEE ROSTER |
| 8 | CORRESPONDENCE WITH THE MFC COMMITTEE |
| 9 | 1 SCOPE 2 TERMS AND DEFINITIONS 2.1 Symbols 2.2 Definitions 2.2.1 Definitions Found in ASME MFC-1M 2.2.2 Definitions for MFC-12M |
| 10 | 3 REFERENCES 1 Symbols |
| 11 | 4 OPERATING PRINCIPLES 4.1 Description of Operation 4.2 BernoulliÅ’s Equation 4.3 Total Pressure |
| 12 | 1 APT Showing Total and Reference Pressure Sensed on the Strut 2 APT Showing Total Pressure Sensed on the Strut and Reference Pressure Sensed at the Pipe Wall |
| 13 | 4.4 Reference Pressure 4.5 Flow Rate Calculation 5 FLOW EQUATIONS 6 UNIT CONSTRUCTION CONSIDERATIONS 6.1 Sensor Construction 6.2 Pressure Containment Elements 6.3 Mounting Methods and Hardware |
| 14 | 6.4 Hot Taps 6.5 Materials 6.6 Structural Consideration 7 INSTALLATION EFFECTS 7.1 Velocity Profile 7.2 Upstream and Downstream Pipe Length Requirements 7.3 Alignment and Orientation 7.3.1 Alignment. 7.3.2 Orientation. 7.4 Conduit Internal Surface Condition |
| 15 | 7.5 Conduit Wall Mount Opening 8 OPERATION 9 FLOW COEFFICIENT 9.1 Factors Affecting the Flow Coefficient 9.2 Determination of the Flow Coefficient 9.2.1 Direct Method. 9.2.2 Indirect Method. 9.3 Flow Coefficient Uncertainty 10 FLOW RATE MEASUREMENT UNCERTAINTY 10.1 Definition of Uncertainty 10.1.1 10.1.2 |
| 16 | 10.2 Computation of Flow Uncertainty 10.2.1 |
| 17 | A TYPICAL CROSS SECTIONS OF MULTIPORT AVERAGING PITOT PRIMARY ELEMENTS |
| 18 | B MULTIPORT AVERAGING PITOT PRIMARY ELEMENT FLOW THEORY B-1 FLOW EQUATION B-2 EXPANSIBILITY EXPANSION FACTOR |
| 19 | B-3 REFERENCE PRESSURE MEASUREMENT B-4 STAGNATION PRESSURE MEASUREMENT B-5 AVERAGING AND FLOW PROFILE EFFECTS |
