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FLUID FLOW MEASUREMENT

FLUID FLOW MEASUREMENT By N. Asyiddin EMPTY PAGE TABLE OF CONTENTS FLUID FLOW WHAT IS FLOW?..1 UNDERSTANDING The Flow Energy Balance in 4 Physical Nature of Minimum and Maximum Volumetric Flow (Qmin/Qmax) UNITS OF Conversions between MEASURING THE A. Head Type, or Differential Orifice Venturi Pitot Flow Special DP meter - Rosemount s Probar ..17 B. Turbine 19 C. Positive Displacement Meter (PD)..20 i. Rotating or sliding vane ii. Rotating impeller iii. Rotating piston iv. Nutating-disk D. Magnetic E. Ultra-Sonic F. Vortex G. Coriolis-Effect H. Rotameter (Variable Area Flow Meter)..36 COMPARISON OF METER EMPTY PAGE FFLLUUIIDD FFLLOOWW MMEEAASSUURREEMMEENNTT Flow MEASUREMENT has a history of about 3000 years.

Control of Process ;- sometimes flow meters are used for control of some other main process variables. Examples in Separator column, liquid levels are kept constant by varying the flow rate of the process in columns are also kept constant by varying the flow rate of the process fluid passing through them.

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LEVEL MEASUREMENT

piyushpanchal2007.mynetworksolutions.com

Meter Feet Multiply m by 3.28 Feet Meter Divide ft by 3.28 Notes : 1 in ≅ 2.54 cm 1cm ≅ 0.394 in 1 feet ≅ 0.3048 m 1 m ≅ 3.28 feet Example of calculation: 1. 2 feet 4 inches of water is equivalent to how much water in meter? ... level in the glass seeks the same position as the level in the tanks. It provides a continuous visual

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user.engineering.uiowa.edu

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This is the same form of equation used for incompressible flow with the addition of the expansion factor Y, which relates the density of the fluid at the orifice to the upstream density. Further, Crane states; "When the absolute inlet pressure is greater than this amount, flow through nozzles should be calculated as outlined on the following page."

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