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The ultrasonic flow meter is a device that measures the volume of liquid flowing through pipes by sending a narrow beam of high frequency sound waves (ultrasound) through a sensing tube that is in the pipe. The time it takes for the sound waves to travel from one end of the pipe to the other and back again is measured, and this time interval is then used to calculate flow rate.
Results are displayed electronically as volume per unit time, such as gallons per minute. Ultrasonic flow meters are primarily used for measurement in industrial applications, especially where corrosive fluids are being measured, where high accuracy is required, or where there are safety issues.
An ultrasonic flow meter consists of an electronic module with an ultrasound transducer that makes up part of the sensing tube. The sensing tube may be made from any material that will allow sound waves to pass through it, such as steel, copper or plastic-coated glass fiber-reinforced plastics. You can check click on link for more information.
It also has a transmitter and receiver assembly that generates and senses the ultrasound signals, respectively; a signal conditioner which amplifies and filters the transmitted and received signals; a display for viewing the volume flow rate; and a power supply for providing power to all parts of the meter.
Flow meters are used in a variety of industries and applications, including water, natural gas, petroleum, and chemical. Ultrasonic flow meters are suited for a wide range of applications. They can accurately measure the flow rates of fluids ranging from practically incompressible liquids to highly compressible gases. They can be used to measure liquid or gas flows in either open or closed pipelines.
Over the past 30 years, ultrasonic flow meters have grown in popularity as a method of measuring fluid flow. This technology has improved significantly, and ultrasonic flow meters today are reliable, accurate, and relatively inexpensive.
Turbulent Flow Ultrasonic Flow Meters are designed to measure the volumetric flow rate of liquids, slurries and gases with high precision under both laminar and turbulent flow conditions. The basic principle of operation employs a pair of ultrasonic transmitter/receiver modules which are embedded into opposite sides of a pipe or duct. The ultrasonic pulses emitted from each module reflect off the opposite wall and return to their respective receiver module. By measuring the time delay between transmission and reception, the velocity of flow at that point can be determined.
This paper describes some important applications for Turbulent Flow Ultrasonic Flow Meters and presents typical specifications for several models in this family of instruments.
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