Continuous Wave vs Pulsed Dopplers

Tagged with: SonTek-IQ Series, Discharge Measurement

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Pulsed Doppler and Continuous Wave (CW) flow meters, otherwise known as “ultrasonic” or A-V meters, are well-known flow measurement systems in the water and wastewater industries. Both kinds of systems are Dopplers, yet they differ in some important ways, both technologically and operationally. A natural question is, “What’s the difference?” Yet surprisingly few technical resources exist that compare the two technologies. Water managers would like to simply understand the pros-and-cons of each and how this information could improve operations over the long run.

Well, we are here to help! SonTek's Janice Yasui and Diego Davis aim to explain some of the important technical differences in simple, practical terms that will help answer:

• Why is there a price difference between the two?
• Is there really a big difference between data collected via Continuous Wave Dopplers, versus Pulsed Doppler instruments
• What is range bias and why is it important?
• How deep or shallow can I collect data?
• What about variable, or uneven flow conditions?
• How accurate does my data really need to be?
• How do I check if my flow instrument is still accurate in the future?
• Your own questions—this is a live webinar with Q&A!

This one hour presentation is chocked full of information that will show you with data and helpful illustrations that not all Dopplers are created equal.

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