What are the types of flowmeters and which is better ?

mass flow mete, orifice plate and velocity flowmeter but you can choose any one depending in your requirments

orifice plate, venturi meter, pitot tube,mass flow meter,velocity flow meter etc..

there are several steps for choosing flow meter that is according to the needs so everyone has its advantage and disadvantage..

The choice of a meter is not a simple thing. To make a correct choice, we must take into account a multitude of parameters. It is necessary above all to precisely define its own requirements, the constraints imposed by the fluid to be measured and the characteristics of the environment.

I think: The electromagnetic flowmeter is recommended for metering, control, monitoring or dosing / filling any conductive liquid: water, sludge, pulp, juice, syrup, etc..

Typical Industries: food processing, life sciences, chemistry, environment, stationery.