This Economically priced Clamp-on Ultrasonic Transit Time Flowmeter indicates Rate and Total flow. It is easy to program, installs in seconds on most pipe materials and sizes. Recommended for full pipe, clean liquids applications such as water, well water, final effluent, chilled water, process water, DI water, RO water, oil, chemicals, flow monitoring and control.
Theory of Operation
The transit time flow meters utilize two clamp-on transducers that function as both ultrasonic transmitters and receivers and are clamped on the outside of a closed pipe. The flow meter operates by alternately transmitting and receiving a frequency-¬modulated burst of sound energy between the two transducers. The burst is first transmitted in the direction of fluid flow and then against fluid flow. Since sound energy in a moving liquid is carried faster when it travels in the direction of fluid flow (downstream) than it does when it travels against fluid flow (upstream), a differential in the times of flight will occur. If the fluid is not moving, the time of flight difference will be zero it will indicate zero flow.
