Process Control and Instrumentation
Flow rate of those fluids which are insensitive to changes in their density, viscosity or flow velocity profile can be best measured by a

Magnetic flowmeter
Turbine flowmeter
Pitot tube
Flow nozzle type flowmeter

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Process Control and Instrumentation
A magnetic flowmeter is

Based on the principle of Faraday's law
Based on the linear relationship between the fluid flow rate and the induced voltage
All of these
Capable of measuring the flow rate of slurries and electrolytes

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