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<div>Thanks' Jon, it really doesn't even matter if the one for change is actually one foot. I suppose what I want is an accurate (within reason) indication if the sub is moving up or down or sitting still.</div><div>Hank</div><div><br></div>
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On Thursday, March 15, 2018, 10:29:48 AM MDT, Jon Wallace via Personal_Submersibles <personal_submersibles@psubs.org> wrote:
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<div><div id="yiv0703197535"><div><div style="color:#000;background-color:#fff;font-family:times new roman, new york, times, serif;font-size:16px;"><div dir="ltr" id="yiv0703197535yui_3_16_0_ym19_1_1521130773392_8320"><span id="yiv0703197535yui_3_16_0_ym19_1_1521130773392_8321">For a voltage or current output from a sensor, the change of depth is going to be an issue of resolution that will be determined by the ADC. From that perspective change of depth will be as accurate as the ADC can provide, but "repeatability" may come into play which may affect whether each 1 foot of depth is sensed as an actual 1 foot of depth. There may be some variability but I think in general, the change of depth would be accurate for all intents and purposes.</span></div><div dir="ltr" id="yiv0703197535yui_3_16_0_ym19_1_1521130773392_8320"><span><br clear="none"></span></div><div dir="ltr" id="yiv0703197535yui_3_16_0_ym19_1_1521130773392_8320"><span id="yiv0703197535yui_3_16_0_ym19_1_1521130773392_8532">Sean may care to comment.</span></div><div dir="ltr" id="yiv0703197535yui_3_16_0_ym19_1_1521130773392_8320"><span><br clear="none"></span></div><div dir="ltr" id="yiv0703197535yui_3_16_0_ym19_1_1521130773392_8320"><span><br clear="none"></span></div><div class="yiv0703197535qtdSeparateBR" id="yiv0703197535yui_3_16_0_ym19_1_1521130773392_8253"><br clear="none"><br clear="none"></div><div class="yiv0703197535yahoo_quoted" id="yiv0703197535yui_3_16_0_ym19_1_1521130773392_8246" style="display:block;"> <div id="yiv0703197535yui_3_16_0_ym19_1_1521130773392_8245" style="font-family:times new roman, new york, times, serif;font-size:16px;"> <div id="yiv0703197535yui_3_16_0_ym19_1_1521130773392_8244" style="font-family:HelveticaNeue, Helvetica Neue, Helvetica, Arial, Lucida Grande, sans-serif;font-size:16px;"> <div class="yiv0703197535yqt1060483495" id="yiv0703197535yqt19785"><div dir="ltr" id="yiv0703197535yui_3_16_0_ym19_1_1521130773392_8243"> <font id="yiv0703197535yui_3_16_0_ym19_1_1521130773392_8252" size="2" face="Arial"> </font><hr size="1"> <b id="yiv0703197535yui_3_16_0_ym19_1_1521130773392_8531"><span id="yiv0703197535yui_3_16_0_ym19_1_1521130773392_8530" style="font-weight:bold;">From:</span></b> hank pronk 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 id="yiv0703197535yui_3_16_0_ym19_1_1521130773392_8529"><span id="yiv0703197535yui_3_16_0_ym19_1_1521130773392_8528" style="font-weight:bold;">Sent:</span></b> Thursday, March 15, 2018 12:01 PM<br clear="none"> <b id="yiv0703197535yui_3_16_0_ym19_1_1521130773392_8513"><span id="yiv0703197535yui_3_16_0_ym19_1_1521130773392_8512" style="font-weight:bold;">Subject:</span></b> [PSUBS-MAILIST] depth gauge<br clear="none"> </div> <div class="yiv0703197535y_msg_container" id="yiv0703197535yui_3_16_0_ym19_1_1521130773392_8514"><br clear="none"><div id="yiv0703197535"><div id="yiv0703197535yui_3_16_0_ym19_1_1521130773392_8517"><div id="yiv0703197535yui_3_16_0_ym19_1_1521130773392_8516" style="font-family:Helvetica Neue, Helvetica, Arial, sans-serif;font-size:13px;"><div id="yiv0703197535yui_3_16_0_ym19_1_1521130773392_8515">Hi all, recently there was talk about a depth gauge. Jon mentioned the accuracy being being a percentage of depth. In an effort to save battery life, I am thinking I should add a digital depth or pressure gauge. My feeling is, if it is accurate in terms of change of depth it would be valuable to have. The question is, is the accuracy short fall a mater of actual depth or change of depth or both? I don't care about actual depth, I just care about change of depth.</div><div id="yiv0703197535yui_3_16_0_ym19_1_1521130773392_8518">Hank</div></div></div></div>_______________________________________________<br clear="none">Personal_Submersibles mailing list<br clear="none"><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"><a rel="nofollow" shape="rect" target="_blank" href="http://www.psubs.org/mailman/listinfo.cgi/personal_submersibles">http://www.psubs.org/mailman/listinfo.cgi/personal_submersibles</a><br clear="none"><br clear="none"><br clear="none"></div></div> </div> </div> </div></div></div></div><div class="yqt1060483495" id="yqt66509">_______________________________________________<br clear="none">Personal_Submersibles mailing list<br clear="none"><a shape="rect" ymailto="mailto:Personal_Submersibles@psubs.org" href="mailto:Personal_Submersibles@psubs.org">Personal_Submersibles@psubs.org</a><br clear="none"><a shape="rect" href="http://www.psubs.org/mailman/listinfo.cgi/personal_submersibles" target="_blank">http://www.psubs.org/mailman/listinfo.cgi/personal_submersibles</a><br clear="none"></div></div>
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