flow velocity meter
SeaPhD at aol.com
SeaPhD at aol.com
Wed Dec 11 23:17:01 EST 1996
I am in the early stages of assessing the feasibility of adapting a new
portable acoustic doppler flow velocity meter to a version that can be used
by divers. I have been relating some of my reef research experiences to the
factory engineers, but I would like to have feedback from other researchers
who might have additional opinions. In my opinion, there is a need for
better portable instrumentation for flow measurements, and the manufacturer
of this instrument seems to be interested in working with scientists.
I suppose that the best thing to do would be to give some of the capabilities
of the present instrument, which is presently used while wading.
The meter presently has...
a 7.6 m cable
a telescoping (0.5 m to 1.8 m) wading rod for the sensor
an ultrasonic doppler sensor (38 mm x 38 mm x 25 mm)
a receiving unit/digital display (11.4 cm x 17.8 cm x 15.2 cm)
a rechargeable battery for up to 12 hours of continuous use
a velocity range of 0.015 to + or - 3 m/s (bidirectional)
a velocity resolution of 0.003 m/s
minimum particulate level of 100 micron @ 100 ppm
overall weight (minus the carrying case) 1.4 kg
I would appreciate any comments on the suitability of the size, weight,
measurement capabilities, etc. to underwater use by a diver. I would also be
interested in what people consider to be a reasonable cost for such an
instrument. The wading model will sell for about $3500 (US), but the diving
model could differ considerably, depending on demand and features. Please
feel free to e-mail comments to me directly, or, if you are aware of a
similar instrument, I would like to know about it.
Randy, J. Runnels (e-mail:
SeaPhD at aol.com)
Marine Education &
Research Specialties, Inc.
P.O. Box 10517
Tampa, Florida 33679-0517
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