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<div class="moz-cite-prefix">On 13/03/2018 12:28, Robert Helling
wrote:<br>
</div>
<blockquote type="cite"
cite="mid:152C3D7D-D0A9-4A7C-8AB8-B0992FF637F6@atdotde.de">
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On 12. Mar 2018, at 15:58, Willem Ferguson <<a
href="mailto:willemferguson@zoology.up.ac.za" class=""
moz-do-not-send="true">willemferguson@zoology.up.ac.za</a>>
wrote:
<div>
<blockquote type="cite" class=""><br
class="Apple-interchange-newline">
<div class=""><span style="font-family: Menlo-Regular;
font-size: 11px; font-style: normal; font-variant-caps:
normal; font-weight: normal; letter-spacing: normal;
text-align: start; text-indent: 0px; text-transform: none;
white-space: normal; word-spacing: 0px;
-webkit-text-stroke-width: 0px; float: none; display:
inline !important;" class=""><span
class="Apple-converted-space"> </span>b) Adapting the
gas partial pressure graphs to reflect what the diver
breathes during bailout. When rendering the dive by
creating a plot_info structure for each sample, the
easiest mechanism of incorporating bailout would be to use
the Shearwater approach: have a byte indicating Loop or
Bailout and perform the appropriate calculation for gas
partial pressures. Alternatively, it may be possible to
reference the linked list of existing events, find the
next bailout event and plot the pO2 depending on the type
of bailout event (i.e. Bailout or OC->Loop). But this
would incur significantly more computational overhead
since this lookup will be needed for each plot_info on the
dive profile.</span></div>
</blockquote>
</div>
<br class="">
<div class="">
<div style="color: rgb(0, 0, 0); font-family: Menlo; font-style:
normal; font-variant: normal; font-weight: normal;
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none; white-space: normal; widows: 2; word-spacing: 0px;
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-webkit-nbsp-mode: space; -webkit-line-break:
after-white-space;" class="">
<div style="color: rgb(0, 0, 0); font-family: Menlo;
font-style: normal; font-variant: normal; font-weight:
normal; letter-spacing: normal; line-height: normal;
orphans: 2; text-align: -webkit-auto; text-indent: 0px;
text-transform: none; white-space: normal; widows: 2;
word-spacing: 0px; -webkit-text-stroke-width: 0px;
word-wrap: break-word; -webkit-nbsp-mode: space;
-webkit-line-break: after-white-space;" class="">
<div style="color: rgb(0, 0, 0); font-family: Menlo;
font-style: normal; font-variant: normal; font-weight:
normal; letter-spacing: normal; line-height: normal;
orphans: 2; text-align: -webkit-auto; text-indent: 0px;
text-transform: none; white-space: normal; widows: 2;
word-spacing: 0px; -webkit-text-stroke-width: 0px;
word-wrap: break-word; -webkit-nbsp-mode: space;
-webkit-line-break: after-white-space;" class="">
<div style="color: rgb(0, 0, 0); font-family: Menlo;
font-style: normal; font-variant: normal; font-weight:
normal; letter-spacing: normal; line-height: normal;
orphans: 2; text-align: -webkit-auto; text-indent: 0px;
text-transform: none; white-space: normal; widows: 2;
word-spacing: 0px; -webkit-text-stroke-width: 0px;
word-wrap: break-word; -webkit-nbsp-mode: space;
-webkit-line-break: after-white-space;" class="">how is
a bailout different than a gas change event (except
semantics of “emergency”). Why don’t you insert a
gaschange to OC (i.e. with set point 0)?</div>
<div style="color: rgb(0, 0, 0); font-family: Menlo;
font-style: normal; font-variant: normal; font-weight:
normal; letter-spacing: normal; line-height: normal;
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word-wrap: break-word; -webkit-nbsp-mode: space;
-webkit-line-break: after-white-space;" class=""><br
class="">
</div>
<div style="color: rgb(0, 0, 0); font-family: Menlo;
font-style: normal; font-variant: normal; font-weight:
normal; letter-spacing: normal; line-height: normal;
orphans: 2; text-align: -webkit-auto; text-indent: 0px;
text-transform: none; white-space: normal; widows: 2;
word-spacing: 0px; -webkit-text-stroke-width: 0px;
word-wrap: break-word; -webkit-nbsp-mode: space;
-webkit-line-break: after-white-space;" class="">Best</div>
<div style="color: rgb(0, 0, 0); font-family: Menlo;
font-style: normal; font-variant: normal; font-weight:
normal; letter-spacing: normal; line-height: normal;
orphans: 2; text-align: -webkit-auto; text-indent: 0px;
text-transform: none; white-space: normal; widows: 2;
word-spacing: 0px; -webkit-text-stroke-width: 0px;
word-wrap: break-word; -webkit-nbsp-mode: space;
-webkit-line-break: after-white-space;" class="">Robert<br
class="Apple-interchange-newline">
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</blockquote>
A bailout can be an event where one changes from the loop to open
circuit, but using the same cylinder. <br>
<br>
For instance a CCR diver can use the bailout valve to switch from
recycling gas to using the same diluent cylinder but using it in an
OC way. <br>
<br>
For PSCR, a diver can do the last part of the dive using EAN50, but
recycling the EAN50. However, the last 10-15 m is usually done on OC
(no emergency implied, just because the pO2 drop across the injector
valve becomes very large at shallow depths). So, this PSCR diver
switched to OC without switching cylinders.<br>
<br>
So, in the case of rebreathers, bailout does not automatically mean
a change of gas or cylinders.<br>
<br>
Hopes this makes sense?<br>
<br>
Kind regards,<br>
willem<br>
<br>
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