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An ultrasonic flowmeter (non-intrusive Doppler flow meters) is a volumetric flow meter which requires particulates or bubbles in the flow. Ultrasonic flowmeters are ideal for wastewater applications or any dirty liquid which is conductive or water based. Ultrasonics flowmeters will generally not work with distilled water or drinking water. Aerations would be required in the clean liquid applications. Ultrasonic flowmeters are also ideal for applications where low pressure drop, chemical compatibility, and low maintenance are required.
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http://www.google.com.pk/url?sa=t&rct=j&q=&esrc=s&source=web&cd=1&cad=rja&uact=8&ved=0CBwQtwIwAA&url=http%3A%2F%2Fwww.youtube.com%2Fwatch%3Fv%3DuvOW-7G_yG8&ei=m-a2U6i8EOGr0AX16IDoDQ&usg=AFQjCNHR88mZldgJYjr3sxwYkrJlXlSg5g&bvm=bv.,d.d2k
Ultrasonic flowmeter is the type of flow meter that measure the flow of water,gas,or any liquid with the help of ultrasonic wave that can be emitted through sensors.
