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<div>Jon, </div><div>I have suggested using a shoot-through Hull transducer in the past. </div><div>You can shoot through up to 1/2". </div><div>There needs to be no air gap between the transducer & the fiberglass Hull, or in our case fiberglass port hole. </div><div>You could also pot around a shoot through Hull transducer up to 1/2" thick & leave it external.</div><div>Alan </div><div><br></div>
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On Friday, March 26, 2021, 03:02:53 PM GMT+13, Jon Wallace via Personal_Submersibles <personal_submersibles@psubs.org> wrote:
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<div dir="ltr">So I assume you found some way to waterproof the DST800 transducer. Can you give any details? Photos? I called AIRMAR today and talked to one of their technicians who was very helpful but he suggested a "in-hull" unit P79-235-0 because he was emphatic that the transducer would not survive submerged and did not think it could be potted effectively. His suggestion was to use the "in-hull" model and shoot through plexiglas window. Essentially, building a 1-ATM housing for it. I'd rather not do that if the AIRMAR units will survive the depth.</div><div dir="ltr"><br clear="none"></div><div dir="ltr">Jon</div><div dir="ltr"><br clear="none"></div><div dir="ltr"><br clear="none"></div><div dir="ltr"><br clear="none"></div>
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On Thursday, March 25, 2021, 07:22:36 PM EDT, Cliff Redus via Personal_Submersibles <personal_submersibles@psubs.org> wrote:
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<div><div id="ydp1b65f770yiv4303852979ydp90ec9304yiv0352570054"><div><div class="ydp1b65f770yiv4303852979ydp90ec9304yiv0352570054ydpe03772c0yahoo-style-wrap" style="font-family:times new roman, new york, times, serif;font-size:16px;"><div style="font-family:times new roman, new york, times, serif;font-size:16px;"></div>
<div dir="ltr">Jon on the R300, I use the Airmar DST800 <a shape="rect" href="https://www.airmar.com/uploads/brochures/DST800.pdf" style="font-family:times new roman, new york, times, serif;font-size:16px;" rel="nofollow" target="_blank">DST800 Smart™ Sensor | AIRMAR</a> 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. </div><div dir="ltr" style="font-family:times new roman, new york, times, serif;font-size:16px;"><span><br clear="none"></span></div><div dir="ltr" style="font-family:times new roman, new york, times, serif;font-size:16px;"><span>I founds interfacing with NEMA 0183 devices straightforward.</span></div><div dir="ltr" style="font-family:times new roman, new york, times, serif;font-size:16px;"><span><br clear="none"></span></div><div dir="ltr" style="font-family:times new roman, new york, times, serif;font-size:16px;">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 <span><a shape="rect" class="ydp1b65f770yiv4303852979ydp90ec9304yiv0352570054enhancr_card_7475180891" href="https://www.marinepanservice.com/en/accessorio/atu120bt" rel="nofollow" target="_blank">CruzPro ATU120BT: 300 Mt plastic feed-through transducer (marinepanservice.com)</a></span><div><br clear="none"></div><div class="ydp1b65f770yiv4303852979ydp90ec9304yiv0352570054ydpd710c2cfyahoo-link-enhancr-card ydp1b65f770yiv4303852979ydp90ec9304yiv0352570054ydpd710c2cfymail-preserve-class ydp1b65f770yiv4303852979ydp90ec9304yiv0352570054ydpd710c2cfymail-preserve-style" id="ydp1b65f770yiv4303852979ydp90ec9304yiv0352570054ydpd710c2cfenhancr_card_7475180891" style="max-width:400px;font-family:YahooSans, Helvetica Neue, Segoe UI, Helvetica, Arial, sans-serif;position:relative;" data-url="https://www.marinepanservice.com/en/accessorio/atu120bt" data-type="YENHANCER" data-size="MEDIUM"><a shape="rect" class="ydp1b65f770yiv4303852979ydp90ec9304yiv0352570054ydpd710c2cfyahoo-enhancr-cardlink" href="https://www.marinepanservice.com/en/accessorio/atu120bt" style="text-decoration:none !important;color:#000 !important;" rel="nofollow" target="_blank"><table class="ydp1b65f770yiv4303852979ydp90ec9304yiv0352570054ydpd710c2cfcard-wrapper ydp1b65f770yiv4303852979ydp90ec9304yiv0352570054ydpd710c2cfyahoo-ignore-table" border="0" cellpadding="0" cellspacing="0" style="max-width:400px;"><tbody><tr><td colspan="1" rowspan="1" width="400"><table class="ydp1b65f770yiv4303852979ydp90ec9304yiv0352570054ydpd710c2cfcard ydp1b65f770yiv4303852979ydp90ec9304yiv0352570054ydpd710c2cfyahoo-ignore-table" border="0" cellpadding="0" cellspacing="0" width="100%" style="max-width:400px;border-width:1px;border-style:solid;border-color:rgb(224, 228, 233);border-radius:2px;"><tbody><tr><td colspan="1" rowspan="1" valign="top" class="ydp1b65f770yiv4303852979ydp90ec9304yiv0352570054ydpd710c2cfcard-primary-image-cell" background="https://s.yimg.com/lo/api/res/1.2/chsP9ljzAaa8X27qTizFUg--~A/Zmk9ZmlsbDt3PTQwMDtoPTIwMDthcHBpZD1pZXh0cmFjdA--/https://www.marinepanservice.com/imgs/mps2k/cruzpro-atu120bt-grande-1.jpg.cf.jpg" bgcolor="#000000" height="175" style="background-color:rgb(0, 0, 0);background-size:cover;position:relative;border-radius:2px 2px 0px 0px;min-height:175px;"><table class="ydp1b65f770yiv4303852979ydp90ec9304yiv0352570054ydpd710c2cfcard-overlay-container-table ydp1b65f770yiv4303852979ydp90ec9304yiv0352570054ydpd710c2cfyahoo-ignore-table" border="0" cellpadding="0" cellspacing="0" style="width:100%;"><tbody><tr><td colspan="1" rowspan="1" valign="top" class="ydp1b65f770yiv4303852979ydp90ec9304yiv0352570054ydpd710c2cfcard-overlay-cell" background="https://s.yimg.com/cv/ae/nq/storm/assets/enhancrV21/1/enhancr_gradient-400x175.png" bgcolor="transparent" style="background-color:transparent;border-radius:2px 2px 0px 0px;min-height:175px;"><table class="ydp1b65f770yiv4303852979ydp90ec9304yiv0352570054ydpd710c2cfyahoo-ignore-table" border="0" height="175" style="width:100%;min-height:175px;"><tbody><tr><td colspan="1" rowspan="1" class="ydp1b65f770yiv4303852979ydp90ec9304yiv0352570054ydpd710c2cfcard-richInfo2" style="text-align:left;padding:15px 0 0 15px;vertical-align:top;"></td><td colspan="1" rowspan="1" class="ydp1b65f770yiv4303852979ydp90ec9304yiv0352570054ydpd710c2cfcard-actions" style="text-align:right;padding:15px 15px 0 0;vertical-align:top;"><div class="ydp1b65f770yiv4303852979ydp90ec9304yiv0352570054ydpd710c2cfcard-share-container"></div></td></tr></tbody></table></td></tr></tbody></table></td></tr><tr><td colspan="1" rowspan="1"><table align="center" class="ydp1b65f770yiv4303852979ydp90ec9304yiv0352570054ydpd710c2cfcard-info ydp1b65f770yiv4303852979ydp90ec9304yiv0352570054ydpd710c2cfyahoo-ignore-table" border="0" cellpadding="0" cellspacing="0" style="background:#fff;position:relative;z-index:2;width:100%;max-width:400px;border-radius:0 0 2px 2px;border-top:1px solid rgb(224, 228, 233);"><tbody><tr><td colspan="1" rowspan="1" style="background-color:#ffffff;padding:16px 0 16px 12px;vertical-align:top;border-radius:0 0 0 2px;"></td><td colspan="1" rowspan="1" style="vertical-align:middle;padding:12px 24px 16px 12px;width:99%;font-family:YahooSans, Helvetica Neue, Segoe UI, Helvetica, Arial, sans-serif;border-radius:0 0 2px 0;"><h2 class="ydp1b65f770yiv4303852979ydp90ec9304yiv0352570054ydpd710c2cfcard-title" style="font-size:14px;line-height:19px;margin:0px 0px 6px;font-family:YahooSans, Helvetica Neue, Segoe UI, Helvetica, Arial, sans-serif;color:rgb(38, 40, 42);max-width:314px;">CruzPro ATU120BT: 300 Mt plastic feed-through transducer</h2><p class="ydp1b65f770yiv4303852979ydp90ec9304yiv0352570054ydpd710c2cfcard-description" style="font-size:12px;line-height:16px;margin:0px;color:rgb(151, 155, 167);">CruzPro ATU120BT plastic active feed-through transducer, with temperature, depth 300 Mt, power 320 watt RMS, DSP...</p></td></tr></tbody></table></td></tr></tbody></table></td></tr></tbody></table></a><div class="ydp1b65f770yiv4303852979ydp90ec9304yiv0352570054loadingSpinnerContainer" style="width:100%;min-height:100%;"><div class="ydp1b65f770yiv4303852979ydp90ec9304yiv0352570054D_F ydp1b65f770yiv4303852979ydp90ec9304yiv0352570054F_n ydp1b65f770yiv4303852979ydp90ec9304yiv0352570054gl_C ydp1b65f770yiv4303852979ydp90ec9304yiv0352570054ab_C ydp1b65f770yiv4303852979ydp90ec9304yiv0352570054H_6MGW ydp1b65f770yiv4303852979ydp90ec9304yiv0352570054o_h"><div class="ydp1b65f770yiv4303852979ydp90ec9304yiv0352570054W_6MGW ydp1b65f770yiv4303852979ydp90ec9304yiv0352570054H_6MGW ydp1b65f770yiv4303852979ydp90ec9304yiv0352570054D_X ydp1b65f770yiv4303852979ydp90ec9304yiv0352570054ah_1PEzoz"></div></div></div></div><div dir="ltr">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.</div><div dir="ltr"><br clear="none"></div><div dir="ltr">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.</div><div dir="ltr"><br clear="none"></div><div dir="ltr">Cliff</div><div><br clear="none"></div></div><div dir="ltr" style="font-family:times new roman, new york, times, serif;font-size:16px;"><span><br clear="none"></span></div><div dir="ltr" style="font-family:times new roman, new york, times, serif;font-size:16px;"><span><br clear="none"></span></div><div style="font-family:times new roman, new york, times, serif;font-size:16px;"><br clear="none"></div>
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On Thursday, March 25, 2021, 09:06:37 AM CDT, Jon Wallace via Personal_Submersibles <personal_submersibles@psubs.org> wrote:
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<div><div id="ydp1b65f770yiv4303852979ydp90ec9304yiv0352570054ydpa3352751yiv5203155103"><div><div class="ydp1b65f770yiv4303852979ydp90ec9304yiv0352570054ydpa3352751yiv5203155103yahoo-style-wrap" style="font-family:times new roman, new york, times, serif;font-size:16px;"><div dir="ltr">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.</div><div dir="ltr"><br clear="none"></div><div dir="ltr">Jon</div></div></div></div>_______________________________________________<br clear="none">Personal_Submersibles mailing list<br clear="none"><a shape="rect" href="mailto:Personal_Submersibles@psubs.org" rel="nofollow" target="_blank">Personal_Submersibles@psubs.org</a><br clear="none"><a shape="rect" href="http://www.psubs.org/mailman/listinfo.cgi/personal_submersibles" rel="nofollow" target="_blank">http://www.psubs.org/mailman/listinfo.cgi/personal_submersibles</a><br clear="none"></div></div>
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