Liquid Flow Meters and Switches

Instruments that are used for measuring the flow rate of a particular liquid, flowing through a pipe, are called flow meters. The measurements can be done based on either the mass flow rate or the volumetric flow rate and the units in which it is measured are kilogram per second and liters per second respectively. The standard liquid flowmeter is used in various fields and has significant utility. In the medical field, industrial sector, like food processing, semiconductor fabrication, water management, etc. There are various types of flow meters, depending on the principle that administers the application. Ultrasonic, Mechanical, Pressure, and Electromagnetic are the types of liquid flowmeters. Open & Closed Channel Flow The flow of any liquid can be classified into open or closed pipe flow. The open channel in the free-flowing stream is not restricted by any wall and the flow is controlled by the force of gravity. The fluid flow in the closed channel occurs due to the p

Different Kinds of Liquid Flow Meters There are different kinds of liquid flow meters, depending on the circumstances in which the flow meters are used.    1. C losed pipe flow meter: The closed pipe flow meter is a type of flow meter that is used for fluids flowing in a closed conduit like sewer, kitchen pipeline, water pipeline, fuel pipeline, etc. and the open channel includes measuring the flow in a non-constricted area.  2. Differential Pressure Flow Meter : Being the most common flow meter in use, it has primary and secondary component. The first component changes the kinetic energy and the second one measure the differential pressure, which produces a signal that can be changed to get the flow rate.   3. Velocity Flow Meters : This flow meter operates directly with the volume flow rate. It translates the data of the velocity of water into its volume. When the flow meter is used with Reynold’s number greater than 10,000, the flow meter becomes insensit