T&T: Airmar Speed Transducer

[Joel Truher]

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 <rcrogers6 at kennett.net> 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" <outtahere100 at yahoo.com>
>  |
>  |  "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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