A fluid density is determined.

A fluid velocity is determined using the first flow rate, the fluid density, and a physical property of the flow meter.

The coupled float member is configured to increase flow through the valve member as a density of the fluid decreases and to restrict flow through the valve member as the density of the fluid increases.

The density of the fluid in the chamber is measured together with the number of volume increments passed.

Mass flow of a multi-phase fluid is determined by feeding the fluid into a chamber through a positive displacement device and measuring the density of the fluid.

p : density of the fluid (fresh water 1000 kg per m ³, sea water 1025 kg by ³)

p : density of the fluid (fresh water 1000 kg per m ³, sea water 1025 kg by ³)

: air density (atmospheric dry air, about: 1,23 kg/m3 at 15 °C and at atmospheric pressure 1,0132 bar)

: fluid density (atmospheric dry air, about: 1,23 kg/m3 at 15 °C and at atmospheric pressure 1,0132 bar)

: fluid density (atmospheric dry air, about: 1,23 kg/m3 at 15 °C and at atmospheric pressure 1,0132 bar)

These two forces are proportional to the density of the fluid and the square of the velocity, and their ratio is therefore constant.

It is shown that the thrust force P = (1/2) pπω2 r4; p being the density of the centrifuged fluid in en Kg/m3; ω being the angular speed of the turbine in rad/s; and r its radius in metres and P in Newtons.

It is in fact the CXS product that controls the drag, which is then easily calculated by multiplying this effective area by the density of the fluid and the square of the velocity.

Blender, on the other hand, uses the kinematic viscosity (which is dynamic viscosity in Pa.s, divided by the density in kg.m-3, unit m2.s-1).