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Flow measurement : by square-edged orifice plate using corner tappings /
Flow Measurement By Square-edged Orifice Plate Using Corner Tappings deals comprehensively with the subject of flow measurement through pipes by a square edge orifice plate using corner tappings. The object is to present in easily readable and applicable form a consideration of all the many factors...
| Clasificación: | Libro Electrónico |
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| Autor principal: | |
| Formato: | Electrónico eBook |
| Idioma: | Inglés |
| Publicado: |
Oxford :
Pergamon Press,
1965.
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| Temas: | |
| Acceso en línea: | Texto completo |
Tabla de Contenidos:
- Front Cover; Flow Measurement: By Square-edged Orifice Plate Using Corner Tappings; Copyright Page; Table of Contents; Foreword; Acknowledgement; Symbols and Units Facing page; PART I: BASIS OF MEASUREMENT; Introduction; CHAPTER 1. CHARACTERISTICS OF FLOW THROUGH SQUARE-EDGED ORIFICE PLATES; Laminar or Stream Line Flow; Turbulent Flow; Relationship between Pressure-drop and Flow Rate; CHAPTER 2. FLOW MEASUREMENT WITHIN PREDETERMINED STANDARDS OF ACCURACY-FACTORS INVOLVED AND ACCURACY OBTAINABLE; 1. Requirements for Metered Fluid; 2. Required Operating Conditions
- 3. The Overall Discharge Coefficient C4. The Fluid Density (S0 and S8); 5. Upstream Temperature (T8); 6. Upstream Pressure (Ps); 7. The Pressure-difference (h); 8. Miscellaneous Installation Features; 9. Special Metering Problems; 10. Correction of Readings of Flow Rates and of Integrated Flows; 11. Overall Accuracy of Measurement; 12. Follow-up Maintenance for Accurate Flow Measurement ; 13. Assessment and Certification of Installations; PART II: RECOMMENDED PROCEDURE FOR CALCULATING ORIFICE PLATES-USE OF FLOWMETER DATA SHEET; 1. Use of Flowmeter Data Sheet
- 2. Explanatory Details of Flowmeter Data SheetPART III: SPECIMEN CALCULATIONS; Example 1- Flowmeter Required Using Indicating Meter to Measure Water from Heating Set; Example 2- Flowmeter Required Using Indicating Meter to Measure 'Air to Plant'; Example 3- Flowmeter Required Using Indicating Meter to Measure 'Steam from Boilers'; Example 4- Flowmeter Required Using High-pressure Ring Balance Recording Meter to Measure 'Make-up Gas to Plant'; Example 5- Flowmeter Required Using a Foxboro-type Indicating Meter to Measure 'Dry Hydrogen from Scrubber'
- Example 5A- Flowmeter Required Using a Foxboro-type Indicating Meter to Measure 'Wet Hydrogen from Scrubber'PART IV: TABULATED AND GRAPHICAL DATA; APPENDIX 1: TOLERANCES; 1. Meaning of the Term 'Tolerance'; 2. Tolerances for Single Measurements; 3. Details of Possible Sources of Error in Flow Measurement; 4. The Combination of Tolerances; 5. Systematic and Random Errors; 6. Application; 7. Notes on ' Standard Deviation'; APPENDIX 2: RECOMMENDED LAYOUTS OF PRESSURE PIPES, ORIFICE PLATES AND METERS; APPENDIX 3: THE EFFECTS OF PULSATIONS ON FLOW MEASUREMENT BY ORIFICE PLATE
- 1. Pulsation Factors Affecting Accuracy of Measurement2. Assessment of Limiting Conditions such that Errors due to Pulsation Factors will be Negligible or will not Exceed �0-5%; 3. Reduction of Severe Pulsations to an Extent Sufficient to give an R.M.S. Effect not Exceeding 1% Using the Hodgson Method; 4. Practical Application of Findings; 5. Worked Examples; APPENDIX 4: A SLIDE-RULE FOR THE RAPID CALCULATION OF ORIFICE PLATE DIMENSIONS; 1. Basis of Slide-Rule Design; 2. Design Details