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Fluid Indication and Control
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Venturi Flowmeter
Venturi Tube - This differential pressure element actually forces the flow into a smaller diameter section of pipe, then measures the pressure differences between the unrestricted flow and the restricted flow. This element can be used for very accurate measurements if calibrated correctly.
Featured Supplier
Fox Valve Development Corp.
Fox Valve manufactures highly engineered venturi flow controls, including:
a) Custom manufactured ∆P venturi flowmeters for demanding applications where off-the-shelf equipment is not adequate;
b) Sonic chokes/Laval nozzles - the simple, reliable way to regulate/set stable, accurate (not measure) gas flow rates, unaffaected by ∆P, eliminating the valve+flowmeter+PLC complexity;
c) Cavitating venturies - like sonic chokes, but for liquids. Since 1961.
Website contains extensive product information.
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Fox Valve Development Corp.
Venturi Calculator
Venturi Calculator Use the flow through Venturi tube calculator for both liquids and gases. Fluid is considered as incompressible, so density (rho) and temperature (T) are constant through the tube. Also, the gas is considered as ideal.

Units of measurement are both in SI and English .

The Flow through Venturi tube calculator can be used for calculation of:

volumetric flow - Q
mass flow - G
velocity on inlet, bigger diameter - V1
velocity on smaller diameter - V2
For calculation of those values, necessary values for input are:

inlet, bigger diameter - D1
smaller diameter - D2
inlet pressure - p1
either pressure on smaller diameter - p2, or pressure drop p1-p2
kinematic viscosity - ni, or dynamic viscosity mi
for gases only:
either temperature - T, or density - rho
gas constant - R
for liquids:
density - rho

Beside four values (Q, G, V1, V2), which calculation is main purpose of calculator, values that are not defined by user are determined in process of calculation (for example: if pressure p1 and temperature T are specified for gas flow - value for rho is calculated together with four main values (Q, G, V1, V2)
Click here for Venturi Calculator>>
 
Types of Flowmeters
» Ultrasonic
» Thermal Mass
» Mass Flow Controller (MFC)
» Coriolis Mass
» Rotameter
» Positive Displacement PD Meter
» Vortex shedding
» Multiparameter Mass Vortex
» Multiphase
» Turbine
» Gas Flowmeter
» Air Flowmeter / Anemometer
» Compressed air Flow
» Calorimetric
» Compound Meter
» Electromagnetic
» Flumes & Weirs
» Insertion Flow Meter
» Open Channel
» Orifice plate
» Paddle Meter
» Variable Area
» Venturi
» Doppler
» Transit-Time
» Portable Flow meter
» Low Flow Measurement
» Laminar Mass
» Medical
» OEM
» dP cell/transmitter