Water Flow Meters

  
What You Need to Know about a Water Flow Meter
  

  
A flow meter refers to a device that is employed to measure the flow rate or quantity of a gas or liquid moving through a pipe. There are so many flow measurement applications each one has its own limitations and engineering demands. Flow meters are called by many names, such as flow gauge, flow indicator, liquid meter, and others, depending on the specific industry. However, the function, which is to measure flow, stays the same. Below are some of the most essential things that you should know about a water flow meter.

Functions of a Flow Meter

A flow meters is used in various types of applications to measure the volumetric flow rate or mass flow rate. The specific application established the kind and capacity of the flow meter. Fluids, gases and liquids, are determined according to volumetric flow rate and mass flow rate. Every type of flowmeter has its own particular applications and installation requirements. The most critical thing to remember when selecting the right flowmeter is to use the application as your marker, and not the technology. A lot of these technologies all work perfectly well on different applications. If you choose based on the application, you can choose the technology you wish to use relying on accuracy, cost, durability and reliability, instead of trying to make the technology you want suit the application you actually have.

Varieties of Flow Meters

Electromagnetic flow meters detect flow using Faraday's Law of induction. Within an electromagnetic flow meter, you can find an electromagnetic coil that creates a magnetic field, and electrodes that capture electromotive force (voltage). Thanks to this, while it may look like there is nothing inside the flow pipe of an electromagnetic flow meter, flow can be calculated. Due to the fact that electromagnetic flow meters depend on the laws of electromagnetic induction, conductive liquids are the only liquids for which flow can be detected.

Vortex flow meters feature a bluff body, or shedder bar to impede flow. As the fluid moves the body, vortices, or swirls are produced downstream in an alternating pattern much the same as the way a flag flaps in the wind. A transducer (piezoelectric crystal, pressure sensor, ultrasonic sensor) is employed to identify the vortices, and the frequency of those vortices corresponds to the velocity of flow. Some examples of applications for which vortex flow meters are used are water, wastewater, steam, pulp and paper, chemicals, and petrochemicals.

A mag flow meter refers to a meter that computes fluid flow by permitting the cross sectional area of the device to fluctuate as a response to the flow, resulting in some measurable effect that determines the rate.