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actually the "smart transducer" is different. all it does is combine
a paddlewheel with a NMEA interface. it works fine, but it's not
calibratable (e.g. for keel offset).
the cs4500 unit doesn't work that way; it imitates a paddlewheel.
On Fri, Feb 15, 2008 at 10:11 AM, Ron Rogers <> wrote:
> Furuno (and probably others) offers this "Smart transducer" (mine came in an
> Airmar box) in several versions: temp,speed, depth; speed, depth; etc.
> Although they attach to most Furuno NavNet gear, you can buy an RD30 which
> provides a readout for this and other NEMA gear.
>
> Ron Rogers
>
> ----- Original Message -----
> From: "John & Liz" <>
> |
> | "I'd like to ask a research favor from you as well. It looks like our
> | speed transducer crapped out. Airmar makes a non-paddlewheel transducer
> | that works off of ultrasonic signal (I think) measurements of small
> | bubbles and particles in the water. This new style has been out for
> several
> | years now and I'm wondering if there are any rumblings about it, good,
> | bad, or indifferent. Not having to clean a paddle wheel would be nice,
> | but not if the sensor doesn't work for well."
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