<html><body><div style="color:#000; background-color:#fff; font-family:HelveticaNeue, Helvetica Neue, Helvetica, Arial, Lucida Grande, sans-serif;font-size:16px"><div dir="ltr" id="yui_3_16_0_1_1412630397936_14506"><span>Hank,</span></div><div dir="ltr" id="yui_3_16_0_1_1412630397936_14499"><span id="yui_3_16_0_1_1412630397936_14498">you have a much larger boat than the DW, so the atmosphere changes more slowly.</span></div><div dir="ltr" id="yui_3_16_0_1_1412630397936_14499"><span>On the Tritan 3000 ($3,000,000 sub) they told me there was no automatic O2</span></div><div dir="ltr" id="yui_3_16_0_1_1412630397936_14499"><span>addition; they just increased or decreased the flow manually.</span></div><div dir="ltr" id="yui_3_16_0_1_1412630397936_14499"><span>Alan</span></div><br> <div style="font-family: HelveticaNeue, Helvetica Neue, Helvetica, Arial, Lucida Grande, sans-serif; font-size: 16px;" id="yui_3_16_0_1_1412630397936_14505"> <div style="font-family: HelveticaNeue, Helvetica Neue, Helvetica, Arial, Lucida Grande, sans-serif; font-size: 16px;" id="yui_3_16_0_1_1412630397936_14504"> <div dir="ltr" id="yui_3_16_0_1_1412630397936_14503"> <hr size="1" id="yui_3_16_0_1_1412630397936_14502"> <font size="2" face="Arial" id="yui_3_16_0_1_1412630397936_14508"> <b><span style="font-weight:bold;">From:</span></b> hank pronk 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, October 7, 2014 11:27 AM<br> <b><span style="font-weight: bold;">Subject:</span></b> Re: [PSUBS-MAILIST] bellows add<br> </font> </div> <div class="y_msg_container" id="yui_3_16_0_1_1412630397936_14509"><br><br clear="none">Alan,<br clear="none">I am sure they have a system that reacts to high O2 levels etc etc I think my situation is unique and a bellows add does not makes sense.<br clear="none">Hank-------------------------------------------<br clear="none">On Mon, 10/6/14, Alan James via Personal_Submersibles <<a shape="rect" ymailto="mailto:personal_submersibles@psubs.org" href="mailto:personal_submersibles@psubs.org">personal_submersibles@psubs.org</a>> wrote:<br clear="none"><br clear="none"> Subject: Re: [PSUBS-MAILIST] bellows add<br clear="none"> To: "Personal Submersibles General Discussion" <<a shape="rect" ymailto="mailto:personal_submersibles@psubs.org" href="mailto:personal_submersibles@psubs.org">personal_submersibles@psubs.org</a>><br clear="none"> Received: Monday, October 6, 2014, 6:19 PM<br clear="none"> <br clear="none"> I agree<br clear="none"> Hank,I think<br clear="none"> you should email Phil & warn him:)I have<br clear="none"> thought that if there was an air leak in to the cabin the<br clear="none"> bellows add systemwould stop<br clear="none"> adding O2. They have a manual system integrated into the<br clear="none"> bellows addunit &<br clear="none"> a continual feed of O2 regardless of the belows. They would<br clear="none"> have O2 monitorswith set<br clear="none"> point alarms if the O2 % was too high or low but how they<br clear="none"> would address analarm<br clear="none"> issue I don't know.I like<br clear="none"> Cliff's method of having a set volume flowing in (as per<br clear="none"> DW) & O2 addition generatedby O2<br clear="none"> measurements opening an O2 solenoid valve via a PLC. This is<br clear="none"> similar to arebreather<br clear="none"> & James Cameron's system on the Deepsea<br clear="none"> Challenger.Don't<br clear="none"> get me going on the coffee issue. I buy green beans &<br clear="none"> roast them. Would growthem if we<br clear="none"> had the climate. My side of<br clear="none"> Auckland had power. Hugh lives on the Dark side.Alan<br clear="none"> <br clear="none"> <br clear="none"> From: hank pronk via<br clear="none"> Personal_Submersibles<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"> <br clear="none"> To:<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"> Sent: Tuesday, October<br clear="none"> 7, 2014 10:07 AM<br clear="none"> Subject:<br clear="none"> [PSUBS-MAILIST] bellows add<br clear="none"> <br clear="none"> <br clear="none"> I have been pondering the idea of a bellows add<br clear="none"> system for Gamma. I am not sure how the DW deals with<br clear="none"> pressure change due to temperature change. When I am<br clear="none"> diving Gamma the temperature swing is huge causing a big<br clear="none"> negative pressure inside. A bellows add system would be<br clear="none"> dumping O2 in like mad. Does the DW have an automatic O2<br clear="none"> over ride or an automatic air release to compensate. Does<br clear="none"> the pilot manually add air to avoid O2 build up.<br clear="none"> When I surface after a dive without the<br clear="none"> scrubber or O2 feeding in, I have to open my hatch vent<br clear="none"> valve for what seems like forever to equalize the sub to<br clear="none"> open the hatch. It is getting better with the air temps<br clear="none"> dropping. I can't wait to go for a dive when it is<br clear="none"> snowing. <br clear="none"> Hank<br clear="none"> _______________________________________________<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"> <br clear="none"> <br clear="none"> <br clear="none"> <br clear="none"> -----Inline Attachment Follows-----<div class="qtdSeparateBR"><br><br></div><div class="yqt8268044889" id="yqtfd33106"><br clear="none"> <br clear="none"> _______________________________________________<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"> <br clear="none"><br clear="none">_______________________________________________<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></div><br><br></div> </div> </div> </div></body></html>