[PSUBS-MAILIST] Depth Sounder

[Steve McQueen via Personal_Submersibles]

NEMA 2000 is the latest protocol. Is there a reason you would not consider
it?
Steve

On Thu, Mar 25, 2021, 7:21 PM Cliff Redus via Personal_Submersibles <
personal_submersibles at psubs.org> wrote:

> Jon on the R300, I use the Airmar DST800 DST800 Smart™ Sensor | AIRMAR
> <https://www.airmar.com/uploads/brochures/DST800.pdf> I interface it with
> my PLC via RS232 and parse the NEMA 0183 ASCII strings to get altitude,
> speed and temperature.  I have been happy with this transponder for the
> most part.  What I don't like about it is the 70m depth limit.  On many
> occasions when doing a surface transit I have been in deeper water than
> this and the meter pegs out.
>
> I founds interfacing with NEMA 0183 devices straightforward.
>
> The R800 I am designing has a design depth of 800 ft.  As such I need a
> deeper sounder.  Because I like the NEMA 0183 devices and the fact I am
> going to use a RS232 channel on the new boat for altitude, I have speced a
> new transponder. It is the CruzPro ATU120BT CruzPro ATU120BT: 300 Mt
> plastic feed-through transducer (marinepanservice.com)
> <https://www.marinepanservice.com/en/accessorio/atu120bt>
>
> CruzPro ATU120BT: 300 Mt plastic feed-through transducer
>
> CruzPro ATU120BT plastic active feed-through transducer, with temperature,
> depth 300 Mt, power 320 watt RMS, DSP...
> <https://www.marinepanservice.com/en/accessorio/atu120bt>
> This gets me 300m or 984 ft so more than enough for new boat.  The cost
> for the unit is $260.  While these transponders are for surface boats, I am
> hoping that it is solid and can withstand the depth.  At some point I plan
> on doing some depth test in my test chamber to see if it will withstand the
> pressure.  I found some nice altitude sensors for ROVs but I found that the
> prices are a magnitude higher.
>
> I think Hank has been happy with his altitude sounder.  I don't remember
> what he using but you might want to send him and note and see what he used
> on Gamma and the E3000.
>
> Cliff
>
>
>
>
> On Thursday, March 25, 2021, 09:06:37 AM CDT, Jon Wallace via
> Personal_Submersibles <personal_submersibles at psubs.org> wrote:
>
>
> Cliff, what manufacturer/model sounder are you using for altitude?  Do you
> have it interfaced with your computer or is it a separate unit?  I'm
> looking at NMEA sounders which are relatively easy to interface with
> microprocessors but are expensive.  Analog depth sounding transducers are
> much cheaper but I don't know how they present their information.
>
> Jon
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