Flow Measurement
Flow Measurement - Related Videos
10:05
Measuring Turbulent Flows
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2023
Source: Ricardo Mejia-Alvarez and Hussam Hikmat Jabbar, Department of Mechanical Engineering, Michigan State University, East Lansing, MI Turbulent flows exhibit very high frequency fluctuations that require instruments with high time-resolution for their appropriate characterization. Hot-wire anemometers have a short enough time-response to fulfill this requirement. The purpose of this experiment is to demonstrate the use of hot-wire anemometry to characterize a turbulent jet. In this...
13:35
Mass Conservation and Flow Rate Measurements
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2023
Source: Ricardo Mejia-Alvarez and Hussam Hikmat Jabbar, Department of Mechanical Engineering, Michigan State University, East Lansing, MI The purpose of this experiment is to demonstrate the calibration of a flow passage as a flowmeter using a control volume (CV) formulation [1, 2]. The CV analysis focuses on the macroscopic effect of flow on engineering systems, rather than the detailed description that could be achieved with a detailed differential analysis. These two techniques should be...
09:04
Measurement of T Cell Alloreactivity Using Imaging Flow Cytometry
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Cited by 1 •
2017
This paper describes a method for measuring alloreactivity in a mixed population of T cells using imaging flow cytometry.
07:20
Measuring Erythrocyte Complement Receptor 1 Using Flow Cytometry
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Cited by 3 •
2020
The aim of this method is to determine the CR1 density in the erythrocytes of any subject by comparing with three subjects whose erythrocyte CR1 density is known. The method uses flow cytometry after immunostaining of the subjects' erythrocytes by an anti-CR1 monoclonal antibody coupled to an amplified system using phycoerythrin (PE).
09:08
Measuring Material Microstructure Under Flow Using 1-2 Plane Flow-Small Angle Neutron Scattering
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Cited by 27 •
2014
A shear cell is developed for small-angle neutron scattering measurements in the velocity-velocity gradient plane of shear and is used to characterize complex fluids. Spatially resolved measurements in the velocity gradient direction are possible for studying shear-banding materials. Applications include investigations of colloidal dispersions, polymer solutions, and self-assembled structures.
FAQs
An orifice meter infers flow from the pressure drop created as fluid passes through a restricted opening. The measured pressure difference is related to the fluid’s movement through the system, allowing the instrument to indicate flow without directly tracking individual fluid particles. This approach is useful when a system can accommodate a restriction and pressure measurement is available.
A turbine meter relates fluid movement to the rotation of an internal turbine, while an electromagnetic meter uses the response produced when a conductive liquid moves through an electromagnetic field. These mechanisms sense different physical effects, so the appropriate choice depends on the fluid and system conditions. Their distinct operating principles support different engineering measurement requirements.
Meter selection and calibration must account for fluid properties, pipe conditions, required accuracy, and the expected operating range. A device that suits one fluid or piping arrangement may not provide reliable results under different conditions. Considering these variables before installation helps align the instrument’s sensing principle with the process and reduces measurement problems during operation.
Selection begins by matching the meter’s sensing method to the fluid, pipe arrangement, accuracy requirements, and anticipated range of operation. Calibration then establishes dependable measurement performance for those conditions. This combined evaluation is important because a meter’s suitability depends not only on its measurement principle, but also on how well it fits the actual system.
Engineers apply flow measurement in water treatment, chemical processing, energy systems, and industrial automation. In these settings, measured flow supports process operation and control by providing information about fluid movement through equipment and piping. The specific meter depends on the fluid, pipe conditions, accuracy needs, and operating range required by the application.
Flow data helps engineers monitor and control processes in which fluid movement must remain within an intended operating range. In industrial automation, for example, an instrument can provide a measurement used to assess system performance and guide control decisions. Reliable readings also support the design and operation of treatment, chemical, and energy-related systems.