<html><body><div style="color:#000; background-color:#fff; font-family:HelveticaNeue, Helvetica Neue, Helvetica, Arial, Lucida Grande, sans-serif;font-size:16px"><div id="yui_3_16_0_1_1418111955549_2969" dir="ltr">Thanks Emile,</div><div id="yui_3_16_0_1_1418111955549_2969" dir="ltr">so if you feed your compass data to your rudder actuator via a processor, you can</div><div id="yui_3_16_0_1_1418111955549_2969" dir="ltr">be programed to safely return to port if incapacitated. :)</div><div id="yui_3_16_0_1_1418111955549_2969" dir="ltr">Alan</div><br> <div style="font-family: HelveticaNeue, Helvetica Neue, Helvetica, Arial, Lucida Grande, sans-serif; font-size: 16px;" id="yui_3_16_0_1_1418111955549_2972"> <div style="font-family: HelveticaNeue, Helvetica Neue, Helvetica, Arial, Lucida Grande, sans-serif; font-size: 16px;" id="yui_3_16_0_1_1418111955549_2971"> <div dir="ltr" id="yui_3_16_0_1_1418111955549_2970"> <hr size="1" id="yui_3_16_0_1_1418111955549_3226"> <font size="2" face="Arial" id="yui_3_16_0_1_1418111955549_2973"> <b><span style="font-weight:bold;">From:</span></b> Emile van Essen via Personal_Submersibles <personal_submersibles@psubs.org><br> <b><span style="font-weight: bold;">To:</span></b> 'Personal Submersibles General Discussion' <personal_submersibles@psubs.org> <br> <b><span style="font-weight: bold;">Sent:</span></b> Tuesday, December 9, 2014 8:37 PM<br> <b><span style="font-weight: bold;">Subject:</span></b> Re: [PSUBS-MAILIST] gyroscope/fluxgate compass<br> </font> </div> <div class="y_msg_container" id="yui_3_16_0_1_1418111955549_2974"><br><div id="yiv2849145876"><style>
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<div class="yiv2849145876Section1" id="yui_3_16_0_1_1418111955549_2976">
<div class="yiv2849145876MsoNormal" id="yui_3_16_0_1_1418111955549_2975"><font size="2" color="navy" face="Arial"><span style="font-size:10.0pt;font-family:Arial;color:navy;">Alan,</span></font></div>
<div class="yiv2849145876MsoNormal" id="yui_3_16_0_1_1418111955549_3227"><font size="2" color="navy" face="Arial"><span style="font-size:10.0pt;font-family:Arial;color:navy;"> </span></font></div>
<div class="yiv2849145876MsoNormal"><font size="2" color="navy" face="Arial"><span lang="EN-GB" style="font-size:10.0pt;font-family:Arial;color:navy;">I have just a simple
readout. But the compass sensor can be fed into more sophisticated navigation electronics
and can control a rudder actuator.</span></font></div>
<div class="yiv2849145876MsoNormal" id="yui_3_16_0_1_1418111955549_3228"><font size="2" color="navy" face="Arial"><span lang="EN-GB" style="font-size:10.0pt;font-family:Arial;color:navy;"> </span></font></div>
<div class="yiv2849145876MsoNormal" id="yui_3_16_0_1_1418111955549_3229"><font size="2" color="navy" face="Arial"><span lang="EN-GB" style="font-size:10.0pt;font-family:Arial;color:navy;">Emile</span></font></div>
<div class="yiv2849145876MsoNormal" id="yui_3_16_0_1_1418111955549_3230"><font size="2" color="navy" face="Arial"><span lang="EN-GB" style="font-size:10.0pt;font-family:Arial;color:navy;"> </span></font></div>
<div id="yui_3_16_0_1_1418111955549_3234">
<div align="center" class="yiv2849145876MsoNormal" style="text-align:center;"><font size="3" face="Times New Roman"><span style="font-size:12.0pt;">
</span></font><hr align="center" size="2" width="100%" tabindex="-1">
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<div class="qtdSeparateBR"><br><br></div><div class="yiv2849145876yqt2893875769" id="yiv2849145876yqtfd35852"><div class="yiv2849145876MsoNormal" id="yui_3_16_0_1_1418111955549_3233"><b><font size="2" face="Tahoma"><span style="font-size:10.0pt;font-family:Tahoma;font-weight:bold;">Van:</span></font></b><font size="2" face="Tahoma" id="yui_3_16_0_1_1418111955549_3232"><span style="font-size:10.0pt;font-family:Tahoma;" id="yui_3_16_0_1_1418111955549_3231">
Personal_Submersibles [mailto:personal_submersibles-bounces@psubs.org] <b><span style="font-weight:bold;">Namens </span></b>Alan James via Personal_Submersibles<br clear="none">
<b><span style="font-weight:bold;">Verzonden:</span></b> zondag 7 december 2014
19:32<br clear="none">
<b><span style="font-weight:bold;">Aan:</span></b> Personal Submersibles General
Discussion<br clear="none">
<b id="yui_3_16_0_1_1418111955549_3236"><span style="font-weight:bold;" id="yui_3_16_0_1_1418111955549_3235">Onderwerp:</span></b> Re: [PSUBS-MAILIST]
gyroscope/fluxgate compass</span></font></div>
</div></div><div class="yiv2849145876yqt2893875769" id="yiv2849145876yqtfd30791">
<div class="yiv2849145876MsoNormal" id="yui_3_16_0_1_1418111955549_3237"><font size="3" face="Times New Roman"><span style="font-size:12.0pt;"> </span></font></div>
<div id="yui_3_16_0_1_1418111955549_3241">
<div id="yiv2849145876yui_3_16_0_1_1417976318221_3188">
<div class="yiv2849145876MsoNormal" style="background:white;" id="yui_3_16_0_1_1418111955549_3240"><font size="3" color="black" face="Helvetica" id="yui_3_16_0_1_1418111955549_3239"><span style="font-size:12.0pt;font-family:Helvetica;color:black;" id="yui_3_16_0_1_1418111955549_3238">Hi
Emile,</span></font></div>
</div>
<span id="yiv2849145876yui_3_16_0_1_1417976318221_3189">
</span><div id="yiv2849145876yui_3_16_0_1_1417976318221_3190">
<div class="yiv2849145876MsoNormal" style="background:white;" id="yui_3_16_0_1_1418111955549_3244"><font size="3" color="black" face="Helvetica" id="yui_3_16_0_1_1418111955549_3243"><span style="font-size:12.0pt;font-family:Helvetica;color:black;" id="yui_3_16_0_1_1418111955549_3242">did
you have it displaying on a Raymarine screen?</span></font></div>
</div>
<span id="yiv2849145876yui_3_16_0_1_1417976318221_3191">
</span><div id="yiv2849145876yui_3_16_0_1_1417976318221_3192">
<div class="yiv2849145876MsoNormal" style="background:white;" id="yui_3_16_0_1_1418111955549_3247"><font size="3" color="black" face="Helvetica" id="yui_3_16_0_1_1418111955549_3246"><span style="font-size:12.0pt;font-family:Helvetica;color:black;" id="yui_3_16_0_1_1418111955549_3245">Can
I feed this in to a plc & display it on a screen easily?</span></font></div>
</div>
<div id="yiv2849145876yui_3_16_0_1_1417976318221_3192">
<div class="yiv2849145876MsoNormal" style="background:white;"><font size="3" color="black" face="Helvetica"><span style="font-size:12.0pt;font-family:Helvetica;color:black;">It
is saying......</span></font></div>
</div>
<h3 style="margin:0cm;margin-bottom:.0001pt;background:white;vertical-align:baseline;font-stretch:inherit;line-height:inherit;"><b><font size="2" color="#9a0036" face="Verdana"><span style="font-size:10.5pt;font-family:Verdana;color:#9A0036;">COMPASS</span></font></b></h3>
<div id="yiv2849145876yui_3_16_0_1_1417976318221_3508" style="font-stretch:inherit;">
<div class="yiv2849145876MsoNormal" style="line-height:12.0pt;background:white;vertical-align:baseline;"><font size="1" color="#333333" face="Verdana"><span style="font-size:9.0pt;font-family:Verdana;color:#333333;"> </span></font></div>
</div>
<table class="yiv2849145876MsoNormalTable" id="yiv2849145876yui_3_16_0_1_1417976318221_3505" border="0" cellpadding="0" width="745" style="width:558.75pt;"><tbody><tr id="yiv2849145876yui_3_16_0_1_1417976318221_3503"><td colspan="1" rowspan="1" id="yiv2849145876yui_3_16_0_1_1417976318221_3507" style="padding:0cm 0cm 0cm 0cm;cursor:default;">
<div class="yiv2849145876MsoNormal" style="line-height:11.1pt;"><font size="1" color="#333333" face="Verdana"><span style="font-size:9.0pt;font-family:Verdana;color:#333333;"> <img class="yiv2849145876" id="yiv2849145876yui_3_16_0_1_1417976318221_3506" width="414" height="319" src="http://www.raymarine.com/uploadedImages/Products/Fishfinders/Transducers/Instrument_Transducers/fluxgate%20to%20ST60plus.jpg" alt="Fluxgate Compass transducer to ST60+" title="Fluxgate Compass transducer to ST60+" data-id="45075d12-5511-0c64-859c-e790d2d0d160"></span></font></div>
</td><td colspan="1" rowspan="1" style="padding:0cm 0cm 0cm 0cm;cursor:default;">
<div class="yiv2849145876MsoNormal" style="line-height:11.1pt;"><font size="1" color="#333333" face="Verdana"><span style="font-size:9.0pt;font-family:Verdana;color:#333333;"> </span></font></div>
</td><td colspan="1" rowspan="1" id="yiv2849145876yui_3_16_0_1_1417976318221_3502" style="padding:0cm 0cm 0cm 0cm;cursor:default;">
<div style="font-style:inherit;font-variant:inherit;font-weight:inherit;font-stretch:inherit;">
<div class="yiv2849145876MsoNormal" style="line-height:12.0pt;vertical-align:baseline;"><strong><b><font size="1" color="#333333" face="inherit"><span style="font-size:9.0pt;font-family:inherit;color:#333333;border:none windowtext 1.0pt;padding:0cm;">SeaTalk</span></font></b><span style="font-style:inherit;font-variant:inherit;font-weight:inherit;font-stretch:inherit;"></span></strong><strong><b><font size="1" color="#333333" face="inherit"><span style="font-size:7.0pt;font-family:inherit;color:#333333;border:none windowtext 1.0pt;padding:0cm;">1</span></font></b></strong><font size="1" color="#333333" face="Verdana"><span style="font-size:9.0pt;font-family:Verdana;color:#333333;"></span></font></div>
</div>
<div style="font-style:inherit;font-variant:inherit;font-weight:inherit;font-stretch:inherit;">
<div class="yiv2849145876MsoNormal" style="line-height:12.0pt;vertical-align:baseline;"><font size="1" color="#333333" face="Verdana"><span style="font-size:9.0pt;font-family:Verdana;color:#333333;"> </span></font></div>
</div>
<div style="font-style:inherit;font-variant:inherit;font-weight:inherit;font-stretch:inherit;">
<div class="yiv2849145876MsoNormal" style="line-height:12.0pt;vertical-align:baseline;"><font size="1" color="#333333" face="Verdana"><span style="font-size:9.0pt;font-family:Verdana;color:#333333;">The </span></font><strong style="font-size:inherit;font-style:inherit;font-variant:inherit;font-stretch:inherit;line-height:inherit;"><b><font size="1" color="#333333" face="inherit"><span style="font-size:9.0pt;font-family:inherit;color:#333333;border:none windowtext 1.0pt;padding:0cm;">Fluxgate Compass</span></font></b></strong><font size="1" color="#333333" face="Verdana"><span style="font-size:9.0pt;font-family:Verdana;color:#333333;"> transducer is compatible with the ST40 and ST60+
instruments on the SeaTalk</span></font><font size="1" color="#333333" face="inherit"><span style="font-size:7.0pt;font-family:inherit;color:#333333;border:none windowtext 1.0pt;padding:0cm;"><span style="font-style:inherit;font-variant:inherit;font-weight:inherit;font-stretch:inherit;">1</span></span></font><font size="1" color="#333333" face="Verdana"><span style="font-size:9.0pt;font-family:Verdana;color:#333333;"> network. The transducer simply connects to the
back of one of the following instruments:</span></font></div>
</div>
<ul type="disc" id="yiv2849145876yui_3_16_0_1_1417976318221_3501" style="margin-top:0cm;font-style:inherit;font-variant:inherit;font-weight:inherit;font-stretch:inherit;line-height:inherit;"><li class="yiv2849145876MsoNormal" style="color:#333333;line-height:12.0pt;vertical-align:middle;font-style:inherit;font-variant:inherit;font-weight:inherit;font-stretch:inherit;"><font size="1" color="#333333" face="Verdana"><span style="font-size:9.0pt;font-family:Verdana;">ST40
Compass</span></font></li><li class="yiv2849145876MsoNormal" id="yiv2849145876yui_3_16_0_1_1417976318221_3500" style="color:#333333;line-height:12.0pt;vertical-align:middle;font-style:inherit;font-variant:inherit;font-weight:inherit;font-stretch:inherit;"><font size="1" color="#333333" face="Verdana"><span style="font-size:9.0pt;font-family:Verdana;">ST60+
Compass</span></font></li></ul>
<div style="font-style:inherit;font-variant:inherit;font-weight:inherit;font-stretch:inherit;">
<div class="yiv2849145876MsoNormal" style="line-height:12.0pt;vertical-align:baseline;"><font size="1" color="#333333" face="Verdana"><span style="font-size:9.0pt;font-family:Verdana;color:#333333;"> </span></font></div>
</div>
</td></tr><tr id="yiv2849145876yui_3_16_0_1_1417976318221_3653"><td colspan="3" rowspan="1" id="yiv2849145876yui_3_16_0_1_1417976318221_3652" style="padding:0cm 0cm 0cm 0cm;">
<div style="font-style:inherit;font-variant:inherit;font-weight:inherit;font-stretch:inherit;">
<div class="yiv2849145876MsoNormal" style="line-height:12.0pt;vertical-align:baseline;"><font size="1" color="#333333" face="Verdana"><span style="font-size:9.0pt;font-family:Verdana;color:#333333;"> </span></font></div>
</div>
<div style="font-style:inherit;font-variant:inherit;font-weight:inherit;font-stretch:inherit;">
<div class="yiv2849145876MsoNormal" style="line-height:12.0pt;vertical-align:baseline;"><strong><b><font size="1" color="#333333" face="inherit"><span style="font-size:9.0pt;font-family:inherit;color:#333333;border:none windowtext 1.0pt;padding:0cm;">SeaTalk</span></font></b><span style="font-style:inherit;font-variant:inherit;font-weight:inherit;font-stretch:inherit;"></span></strong><strong><b><font size="1" color="#333333" face="inherit"><span style="font-size:7.0pt;font-family:inherit;color:#333333;border:none windowtext 1.0pt;padding:0cm;">ng</span></font></b></strong><font size="1" color="#333333" face="Verdana"><span style="font-size:9.0pt;font-family:Verdana;color:#333333;"></span></font></div>
</div>
<div style="font-style:inherit;font-variant:inherit;font-weight:inherit;font-stretch:inherit;">
<div class="yiv2849145876MsoNormal" style="line-height:12.0pt;vertical-align:baseline;"><font size="1" color="#333333" face="Verdana"><span style="font-size:9.0pt;font-family:Verdana;color:#333333;"> </span></font></div>
</div>
<div id="yiv2849145876yui_3_16_0_1_1417976318221_3651" style="font-style:inherit;font-variant:inherit;font-weight:inherit;font-stretch:inherit;">
<div class="yiv2849145876MsoNormal" style="line-height:12.0pt;vertical-align:baseline;"><font size="1" color="#333333" face="Verdana"><span style="font-size:9.0pt;font-family:Verdana;color:#333333;">The </span></font><strong style="font-size:inherit;font-style:inherit;font-variant:inherit;font-stretch:inherit;line-height:inherit;"><b><font size="1" color="#333333" face="inherit"><span style="font-size:9.0pt;font-family:inherit;color:#333333;border:none windowtext 1.0pt;padding:0cm;">Fluxgate Compass</span></font></b></strong><font size="1" color="#333333" face="Verdana"><span style="font-size:9.0pt;font-family:Verdana;color:#333333;"> transducer is compatible with the <a rel="nofollow" shape="rect" target="_blank" href="http://www.raymarine.com/view/?id=1250" title="i70" style=""><font color="#9a0036"><span style="color:#9A0036;text-decoration:none;">i70 </span></font></a>, <a rel="nofollow" shape="rect" target="_blank" href="http://www.raymarine.com/view/?id=621" title="ST70" style=""><font color="#9a0036"><span style="color:#9A0036;text-decoration:none;">ST70 </span></font></a>and <a rel="nofollow" shape="rect" target="_blank" href="http://www.raymarine.com/view/?id=227" title="ST70+" style=""><font color="#9a0036"><span style="color:#9A0036;text-decoration:none;">ST70+ </span></font></a>instruments
on the SeaTalk</span></font><strong style="font-size:inherit;font-style:inherit;font-variant:inherit;font-stretch:inherit;line-height:inherit;"><b><font size="1" color="#333333" face="inherit"><span style="font-size:7.0pt;font-family:inherit;color:#333333;border:none windowtext 1.0pt;padding:0cm;"><span style="font-size:inherit;font-style:inherit;font-variant:inherit;font-weight:inherit;font-stretch:inherit;line-height:inherit;"><span style="font-style:inherit;font-variant:inherit;font-weight:inherit;font-stretch:inherit;">ng</span></span></span></font></b></strong><font size="1" color="#333333" face="Verdana"><span style="font-size:9.0pt;font-family:Verdana;color:#333333;"> network via an <a rel="nofollow" shape="rect" target="_blank" href="http://www.raymarine.com/view/?id=3338" title="iTC-5 transducer converter " style=""><font color="#9a0036"><span style="color:#9A0036;text-decoration:none;">iTC-5
transducer converter </span></font></a>(sold separately). The transducer
is connected to the iTC-5 which converts the transducer signals to SeaTalk</span></font><strong style="font-size:inherit;font-style:inherit;font-variant:inherit;font-stretch:inherit;line-height:inherit;"><span style="font-size:inherit;font-style:inherit;font-variant:inherit;font-weight:inherit;font-stretch:inherit;line-height:inherit;"><span style="font-style:inherit;font-variant:inherit;font-weight:inherit;font-stretch:inherit;"><b><font size="1" color="#333333" face="inherit"><span style="font-size:7.0pt;font-family:inherit;color:#333333;border:none windowtext 1.0pt;padding:0cm;">ng</span></font></b></span><b></b></span></strong><font size="1" color="#333333" face="Verdana"><span style="font-size:9.0pt;font-family:Verdana;color:#333333;">. The iTC-5 is then connected to your SeaTalk</span></font><strong id="yiv2849145876yui_3_16_0_1_1417976318221_3658" style="font-size:inherit;font-style:inherit;font-variant:inherit;font-stretch:inherit;line-height:inherit;"><span id="yiv2849145876yui_3_16_0_1_1417976318221_3657" style="font-size:inherit;font-style:inherit;font-variant:inherit;font-weight:inherit;font-stretch:inherit;line-height:inherit;"><span id="yiv2849145876yui_3_16_0_1_1417976318221_3656" style="font-style:inherit;font-variant:inherit;font-weight:inherit;font-stretch:inherit;"><b><font size="1" color="#333333" face="inherit"><span style="font-size:7.0pt;font-family:inherit;color:#333333;border:none windowtext 1.0pt;padding:0cm;">ng</span></font></b></span><b></b></span></strong><font size="1" color="#333333" face="Verdana"><span style="font-size:9.0pt;font-family:Verdana;color:#333333;"> backbone.</span></font></div>
</div>
<div id="yiv2849145876yui_3_16_0_1_1417976318221_3654" style="font-style:inherit;font-variant:inherit;font-weight:inherit;font-stretch:inherit;">
<div class="yiv2849145876MsoNormal" style="line-height:12.0pt;vertical-align:baseline;"><font size="1" color="#333333" face="Verdana"><span style="font-size:9.0pt;font-family:Verdana;color:#333333;"> </span></font></div>
</div>
<div id="yiv2849145876yui_3_16_0_1_1417976318221_3655" style="font-style:inherit;font-variant:inherit;font-weight:inherit;font-stretch:inherit;">
<div class="yiv2849145876MsoNormal" style="line-height:12.0pt;vertical-align:baseline;"><font size="1" color="#333333" face="Verdana"><span style="font-size:9.0pt;font-family:Verdana;color:#333333;">Note that if your system contains an SPX autopilot the </span></font><strong style="font-size:inherit;font-style:inherit;font-variant:inherit;font-stretch:inherit;line-height:inherit;"><b><font size="1" color="#333333" face="inherit"><span style="font-size:9.0pt;font-family:inherit;color:#333333;border:none windowtext 1.0pt;padding:0cm;">Fluxgate Compass</span></font></b></strong><font size="1" color="#333333" face="Verdana"><span style="font-size:9.0pt;font-family:Verdana;color:#333333;"> should connect directly to the course computer and
not the iTC-5.</span></font></div>
</div>
<div id="yiv2849145876yui_3_16_0_1_1417976318221_3655" style="font-style:inherit;font-variant:inherit;font-weight:inherit;font-stretch:inherit;">
<div class="yiv2849145876MsoNormal" style="line-height:12.0pt;vertical-align:baseline;"><font size="1" color="#333333" face="Verdana"><span style="font-size:9.0pt;font-family:Verdana;color:#333333;">Alan</span></font></div>
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</span></font><hr align="center" id="yiv2849145876yui_3_16_0_1_1417976318221_3193" size="1" width="100%">
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<div class="yiv2849145876MsoNormal" style="background:white;"><b><font id="yiv2849145876yui_3_16_0_1_1417976318221_3197" size="2" color="black" face="Arial"><span style="font-size:10.0pt;font-family:Arial;color:black;font-weight:bold;">From:</span></font></b><font size="2" color="black" face="Arial"><span style="font-size:10.0pt;font-family:Arial;color:black;"> Emile van
Essen via Personal_Submersibles <personal_submersibles@psubs.org><br clear="none">
<b><span style="font-weight:bold;">To:</span></b> 'Personal Submersibles General
Discussion' <personal_submersibles@psubs.org> <br clear="none">
<b><span style="font-weight:bold;">Sent:</span></b> Monday, December 8, 2014
2:19 AM<br clear="none">
<b><span style="font-weight:bold;">Subject:</span></b> Re: [PSUBS-MAILIST]
gyroscope/fluxgate compass</span></font><font color="black" face="Helvetica"><span style="font-family:Helvetica;color:black;"></span></font></div>
</div>
<div id="yiv2849145876yui_3_16_0_1_1417976318221_3198">
<div class="yiv2849145876MsoNormal" style="background:white;"><font size="3" color="black" face="Helvetica"><span style="font-size:12.0pt;font-family:Helvetica;color:black;"> </span></font></div>
<span id="yiv2849145876yui_3_16_0_1_1417976318221_3199">
</span><div id="yiv2849145876">
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<div id="yiv2849145876yui_3_16_0_1_1417976318221_3202">
<div id="yiv2849145876yui_3_16_0_1_1417976318221_3201">
<div class="yiv2849145876MsoNormal" style="background:white;"><font size="2" color="navy" face="Arial"><span lang="EN-GB" style="font-size:10.0pt;font-family:Arial;color:navy;">I got good
results with a (raymarine) fluxgate. The sensor is placed in the all
aluminium bow section ( 0,9
Meter away from the hull) and the readout can placed
anywhere.</span></font><font color="black" face="Helvetica"><span style="font-family:Helvetica;color:black;"></span></font></div>
</div>
<span id="yiv2849145876yui_3_16_0_1_1417976318221_3204">
</span><div id="yiv2849145876yui_3_16_0_1_1417976318221_3206">
<div class="yiv2849145876MsoNormal" style="background:white;"><font size="2" color="navy" face="Arial"><span lang="EN-GB" style="font-size:10.0pt;font-family:Arial;color:navy;">It can
electronically compensate 10 or 12 deg deviation caused by the steel. The
sistership has the sensor in a short mast also with good results.</span></font><font color="black" face="Helvetica"><span style="font-family:Helvetica;color:black;"></span></font></div>
</div>
<div id="yiv2849145876yui_3_16_0_1_1417976318221_3207">
<div class="yiv2849145876MsoNormal" style="background:white;"><font size="2" color="navy" face="Arial"><span lang="EN-GB" style="font-size:10.0pt;font-family:Arial;color:navy;"> </span></font><font color="black" face="Helvetica"><span style="font-family:Helvetica;color:black;"></span></font></div>
</div>
<div>
<div class="yiv2849145876MsoNormal" style="background:white;"><font size="2" color="navy" face="Arial"><span lang="EN-GB" style="font-size:10.0pt;font-family:Arial;color:navy;">Attached a
sketch of the pressuretight sensor housing.</span></font><font color="black" face="Helvetica"><span style="font-family:Helvetica;color:black;"></span></font></div>
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<div>
<div class="yiv2849145876MsoNormal" style="background:white;"><font size="2" color="navy" face="Arial"><span lang="EN-GB" style="font-size:10.0pt;font-family:Arial;color:navy;"> </span></font><font color="black" face="Helvetica"><span style="font-family:Helvetica;color:black;"></span></font></div>
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<div class="yiv2849145876MsoNormal" style="background:white;"><font size="2" color="navy" face="Arial"><span lang="EN-GB" style="font-size:10.0pt;font-family:Arial;color:navy;">Regards, Emile</span></font><font color="black" face="Helvetica"><span style="font-family:Helvetica;color:black;"></span></font></div>
</div>
<div>
<div class="yiv2849145876MsoNormal" style="background:white;"><font size="2" color="navy" face="Arial"><span lang="EN-GB" style="font-size:10.0pt;font-family:Arial;color:navy;"> </span></font><font color="black" face="Helvetica"><span style="font-family:Helvetica;color:black;"></span></font></div>
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<div class="yiv2849145876MsoNormal" style="background:white;"><b><font size="2" color="black" face="Tahoma"><span style="font-size:10.0pt;font-family:Tahoma;color:black;font-weight:bold;">Van:</span></font></b><font size="2" color="black" face="Tahoma"><span style="font-size:10.0pt;font-family:Tahoma;color:black;"> Personal_Submersibles
[mailto:personal_submersibles-bounces@psubs.org] <b><span style="font-weight:bold;">Namens </span></b>" Carsten Standfuß " via Personal_Submersibles<br clear="none">
<b><span style="font-weight:bold;">Verzonden:</span></b> woensdag 3 december
2014 20:46<br clear="none">
<b><span style="font-weight:bold;">Aan:</span></b> Personal Submersibles General
Discussion<br clear="none">
<b><span style="font-weight:bold;">Onderwerp:</span></b> Re: [PSUBS-MAILIST]
gyroscope compass</span></font><font color="black" face="Helvetica"><span style="font-family:Helvetica;color:black;"></span></font></div>
</div>
</div>
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<div class="yiv2849145876MsoNormal" style="background:white;"><font size="2" color="black" face="Courier New"><span style="font-size:10.0pt;">Gyros in aricraft are not north stable - they need a
magnetic compass or other device to set course. But they are okay
if you set course according to your GPS course before you dive. They can
hold the course for some hours with a movment of 2-4 deegre per hour. Okay for
a slow and small Psub. They are vaccum driven or electric. Vaccum driven you
can not use in a small submarine. (Or you need a silencer and eardrums as in
Spurdog). Electric you can use if it is a 12 or 24 V DC driven one. For other
voltage you need a special power converter. The Ebay units are sometimes cheap
- between 100-800 USD - but most of them work not proper. They are build
out of the planes for exact that reason and sold as they are and without any
waranty.. Size is around 100x100x400mm. Volume 4 Liters .. Good solution
if you buy a unit in aircraft condition with papers from a aircarft surplus dealer
with a working garanty. Make sure that they get not wet or 100% humidity. <br clear="none">
<br clear="none">
Gyros in ships are north stabilzed. The need around 40 Minutes to warm up. They
are much bigger - the smallest one are around 300 x 400 x 300 mm . Volume at minimum 36 liter . They need no
calibration or reference and they are stable over month/years. Problem is that
they normal switch on in a ship and never switch off.. If you switch of them -
make sure that you not move the sub in the next hours - otherwise they can be
damaged. They are expensive - about 30000 USD new and 3000-9000 USD second
hand. There life time is limited 30000 - 40000 hours between first
failtures. <br clear="none">
<br clear="none">
I have both types in the Euronaut. And a magnetic one also. <br clear="none">
The gyros are both cheap Ebay ones. One from a aircraft one from a ship. <br clear="none">
And both not working anymore. And the third magnetic one has a big error
because of the 60 ts steel below. <br clear="none">
<br clear="none">
I will by next a second hand one north stabilzed ship gyro for around 3000 USD
from a ship scrap yard electronic dealer with a confirm that they test it and
its run stable but without any further waranty. <br clear="none">
<br clear="none">
A fluxgate its a kind of electronic coils magnetic field compass and will in
most cases not work proper on a strong magnetic metal shell like a submarine
with strong electric motor fields etc. To test on your submarine if these cheap
devices runs on you submarine install a simple magnetic compass temporary on
the sensor spot in mind and than turn the submarine 360 degree. Switch on
and off all electric devices. <br clear="none">
Cross check with another compass (or the same one) far away from the sub.
<br clear="none">
<br clear="none">
In most cases an electric 12 or 24 V Dc driven Airplane direction gryro in
combination with a gps course before diving will do the job. But in 99% a ebay
100 USD item will not work proper. <br clear="none">
<br clear="none">
vbr Carsten<br clear="none">
<br clear="none">
<br clear="none">
<br clear="none">
<br clear="none">
</span></font><font color="black" face="Helvetica"><span style="font-family:Helvetica;color:black;"><br clear="none">
<br clear="none">
"hank pronk via Personal_Submersibles" <<a rel="nofollow" shape="rect" ymailto="mailto:personal_submersibles@psubs.org" target="_blank" href="mailto:personal_submersibles@psubs.org">personal_submersibles@psubs.org</a>>
schrieb:<br clear="none">
> <br clear="none">
> There are all kinds of them on ebay for under 100 dollars, problem is how
to make it work. I assume they just have a small motor that spins. There is a
nice ship gyro sitting at 50 dollars right now but it is about 1 foot dia. That would be
awesome in a big sub.<br clear="none">
> Hank --------------------------------------------<br clear="none">
> On Wed, 12/3/14, Alec Smyth via Personal_Submersibles <<a rel="nofollow" shape="rect" ymailto="mailto:personal_submersibles@psubs.org" target="_blank" href="mailto:personal_submersibles@psubs.org">personal_submersibles@psubs.org</a>>
wrote:<br clear="none">
> <br clear="none">
> Subject: Re: [PSUBS-MAILIST] gyroscope compass<br clear="none">
> To: "Personal Submersibles General Discussion" <<a rel="nofollow" shape="rect" ymailto="mailto:personal_submersibles@psubs.org" target="_blank" href="mailto:personal_submersibles@psubs.org">personal_submersibles@psubs.org</a>><br clear="none">
> Received: Wednesday, December 3, 2014, 1:48 PM<br clear="none">
> <br clear="none">
> Absolutely. You can get small ones for civil<br clear="none">
> aviation and they are used in subs. One challenge is that<br clear="none">
> most airplane ones are powered by a vacuum, but there are<br clear="none">
> 12V models. Unfortunately they're expensive, but a great<br clear="none">
> solution if you can afford it. <br clear="none">
> Alec <br clear="none">
> On Wed, Dec 3, 2014 at 1:28<br clear="none">
> PM, hank pronk via Personal_Submersibles <<a rel="nofollow" shape="rect" ymailto="mailto:personal_submersibles@psubs.org" target="_blank" href="mailto:personal_submersibles@psubs.org">personal_submersibles@psubs.org</a>><br clear="none">
> wrote:<br clear="none">
> Hi<br clear="none">
> all,<br clear="none">
> <br clear="none">
> Ever hear of a gyroscopic compass, seems that ships used to<br clear="none">
> use them. It seems they would not be effected by a<br clear="none">
> submarine hull. What am I missing besides they are very<br clear="none">
> big.<br clear="none">
> <br clear="none">
> Hank<br clear="none">
> <br clear="none">
> _______________________________________________<br clear="none">
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