Describe Turbine flow meter with neat sketch.
Turbine flow meter: Diagram
Description: It consists of a multibladed wheel mounted in a pipe along an axis parallel to the direction of fluid flow in the pipe. The flow of liquid past the wheel causes the wheel to rotate at a rate which is proportional to the velocity of the fluid. This is achieved by fabricating the turbine blades from a ferromagnetic material and placing a permanent magnet and coil inside the meter housing. A voltage pulse is induced in the coil as each blade on the turbine wheel moves past it and these pulses are measured by a pulse counter.