Book contents
- Front Matter
- Contents
- Preface
- Acknowledgments
- Nomenclature
- Chapter 1 Introduction
- Chapter 2 Fluid Mechanics Essentials
- Chapter 3 Specification, Selection, and Audit
- Chapter 4 Calibration
- Chapter 5 Orifice Plate Meters
- Chapter 6 Venturi Meter and Standard Nozzles
- Chapter 7 Critical Flow Venturi Nozzle
- Chapter 8 Other Momentum-Sensing Meters
- Chapter 9 Positive Displacement Flowmeters
- Chapter 10 Turbine and Related Flowmeters
- Chapter 11 Vortex-Shedding, Swirl, and Fluidic Flowmeters
- Chapter 12 Electromagnetic Flowmeters
- Chapter 13 Ultrasonic Flowmeters
- Chapter 14 Mass Flow Measurement Using Multiple Sensors for Single- and Multiphase Flows
- Chapter 15 Thermal Flowmeters
- Chapter 16 Angular Momentum Devices
- Chapter 17 Coriolis Flowmeters
- Chapter 18 Probes for Local Velocity Measurement in Liquids and Gases
- Chapter 19 Modern Control Systems
- Chapter 20 Some Reflections on Flowmeter Manufacture, Production, and Markets
- Chapter 21 Future Developments
- Bibliography
- A Selection of International Standards
- Conferences
- References
- Index
Chapter 9 - Positive Displacement Flowmeters
Published online by Cambridge University Press: 22 September 2009
- Front Matter
- Contents
- Preface
- Acknowledgments
- Nomenclature
- Chapter 1 Introduction
- Chapter 2 Fluid Mechanics Essentials
- Chapter 3 Specification, Selection, and Audit
- Chapter 4 Calibration
- Chapter 5 Orifice Plate Meters
- Chapter 6 Venturi Meter and Standard Nozzles
- Chapter 7 Critical Flow Venturi Nozzle
- Chapter 8 Other Momentum-Sensing Meters
- Chapter 9 Positive Displacement Flowmeters
- Chapter 10 Turbine and Related Flowmeters
- Chapter 11 Vortex-Shedding, Swirl, and Fluidic Flowmeters
- Chapter 12 Electromagnetic Flowmeters
- Chapter 13 Ultrasonic Flowmeters
- Chapter 14 Mass Flow Measurement Using Multiple Sensors for Single- and Multiphase Flows
- Chapter 15 Thermal Flowmeters
- Chapter 16 Angular Momentum Devices
- Chapter 17 Coriolis Flowmeters
- Chapter 18 Probes for Local Velocity Measurement in Liquids and Gases
- Chapter 19 Modern Control Systems
- Chapter 20 Some Reflections on Flowmeter Manufacture, Production, and Markets
- Chapter 21 Future Developments
- Bibliography
- A Selection of International Standards
- Conferences
- References
- Index
Summary
INTRODUCTION
The material in this chapter is based on the paper by Baker and Morris (1985) on positive displacement (PD) meters, which in turn has been updated with more recent industrial and published material and extended to gases. P.D. Baker's (1983) paper provided some additional useful information on these meters. The main types of liquid meter were given by Barnes (1982), Hendrix (1982), Henke (1955), and Gerrard (1979) (cf. Mankin 1955). The reader should refer to API (1992) and similar documents.
At least four of the meter designs to be discussed have been around for over 100 years. The nutating disk flowmeter for liquids was developed in 1850. The rotary piston meter appeared in the late nineteenth century (Baker 1998).
The measurement of gas has depended, from an early date, on two types of positive displacement meter: the wet gas meter of high accuracy and credited to Samuel Clegg (1815), and the diaphragm meter of lower performance but greater range for which William Richards (1843) should take the credit.
BACKGROUND
The concept of carrying known volumes of fluid through a flowmeter is a short step from the use of a discrete measure such as a bucket or measuring flask. Thus in each of the designs described later, the flow enters a compartment that is as tightly sealed as is compatible with relative movement of adjacent components.
- Type
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- Information
- Flow Measurement HandbookIndustrial Designs, Operating Principles, Performance, and Applications, pp. 182 - 214Publisher: Cambridge University PressPrint publication year: 2000