[Acoustics] Unidata Ultrasonic Doppler

[Victor A Levesque]

Hello Joseph,

Is your Unidata Starflow a B or C model? The B model is extremely 
unreliable for reversing flow situations, and the minimum threshold 
velocity that I could measure in a flume was about 0.2 feet per second.

Apparently the C model has been improved and now reliably handles upstream 
and downstream flows (manufacturer rep comments). I suspect the minimum 
velocity is still about the same because of the way the Starflows measure 
velocity.

Luka Stravs of the Environmental Agency of Republic of Slovenia has done a 
lot more work with the Starflows than I have, and has good success using 
them. Perhaps he could give some advice?

Good luck,

Victor Levesque

U.S. Geological Survey
Center for Coastal and Watershed Studies
Tampa, FL
813-975-8620 extension 167
FAX: 813-975-0839




"Joseph L Zanca" <jzanca at usgs.gov>
Sent by: acoustics-bounces at simon.er.usgs.gov
09/14/2004 10:27 AM

 
        To:     <acoustics at simon.er.usgs.gov>
        cc: 
        Subject:        [Acoustics] Unidata Ultrasonic Doppler


      Anyone using (or had used) a Unidata Ultrasonic Doppler Instrument
Model 6526 for a index velocity station sensor? Would like your comments
for an installation in a salt pond outlet...thanks..joe


Joseph L. Zanca
Hydrologic Technician

Department of the Interior
United States Geological Survey
WRD
10 Bearfoot Rd.
Northborough, MA 01532

Office- 508.490.5043
Fax-     508.490.5068
Mobile-508.795.8983


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