Flow Measurement

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Flow Measurement
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• Overview
• Basics
• Measuring Methods Its Application
• Comparison

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Primary Basic

• Accuracy

• Full Scale Accuracy

• Rate Accuracy

• Rangability

• Turndown

• Incompressible Compressible Flow

• ACFM

• SCFM

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• Full Scale Accuracy

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• Rate Accuracy

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Measuring Methods

• Head Type Flowmeters
• Mechanical Flowmeters
• Electronic Flowmeters
• Mass Flowmeters

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Head Type Flowmeters

• Basic

ghv2/2p/? Constant
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Different Type of Head Type Flowmeters

• Orifice Plate
• Venturi
• Flow Nozzle
• Pitot Tube
• Elbow

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Orifice Plate
Basic Equation Vk(h/D)0.5
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Orifice for High Viscose Liquids
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Orifice

• Service Clean Liquids, Gases Steam,(no slurries
  or corrosive)
• Scale Square Root
• Accuracy 1 Full Scale
• Permanent Pressure Loss High
• Cost Low

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Venturi Flow Nozzle
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Flow Nozzle

• Service Liquids, Gases, Steam, High Velocity
  Flows
• Scale Square Root
• Accuracy 1 Full Scale
• Rangability 31
• Permanent Pressure Loss High
• Cost High

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Venturi

• Service Clean Liquids, Gases Steam Slurries and
  Dirty Fluids
• Scale Square Root
• Accuracy 1 Full Scale
• Rangability 31
• Permanent Pressure Loss Low
• Cost High

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Pitot Tube
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Averaging Pitot Tube
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Variable Area Meters
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Mechanical Flowmeters
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Turbine Flowmeters
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Turbine Meters
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Rotary Flowmeters
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Electronic Flowmeters
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Vortex Flowmeters
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Ultrasonic Flowmeters
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Custody Transfer
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Mass Flowmeters
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Coriolis Flowmeters
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Coriolis Flowmeters
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Thermal Mass Flowmeters