<html><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8"></head><body><div>James,</div><div>That is soooo helpful. I started with the el chepo and had the same experience of it being really sensative. Again thank you very much!</div><div>Thanks,</div><div>Scott Waters</div><div><br></div><div><br></div><div><br></div><div><br></div><div><div style="font-size:75%;color:#575757">Sent from my U.S. Cellular© Smartphone</div></div> <br>James Frankland via Personal_Submersibles <personal_submersibles@psubs.org> wrote:<br><div>Hi Scott,</div>
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<div>I looked into quite a few instruments. I was going to get the Analox one, but its expensive and Jon said he bought one and didnt rate it. Crowcon make some good multi meters but again, expensive. So, i bought one of these for CO2 which is really good. Only goes up to 1% mind but that should be far too much anyway. Has an alarm and various features.</div>
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<div><a href="http://www.test-meter.co.uk/anton-carbon-iaq8494-dioxide-meter-vent-check/">http://www.test-meter.co.uk/anton-carbon-iaq8494-dioxide-meter-vent-check/</a></div>
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<div>For O2 i first bought the "el cheapo" kit which is "ok", but it seems really sensitive. The slightest movemnt of the dial sends the reading all over the shop. i wasnt 100% confident with it so i bought this Crowcon personal O2 monitor. Its completely idiot proof, has a high and low alarm and seems really accurate. I use this and the "el cheapo" now together.</div>
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<div><a href="http://www.crowcon.com/uk/products/portables/crowcon-clip-single-gas.html">http://www.crowcon.com/uk/products/portables/crowcon-clip-single-gas.html</a><br></div>
<div>Emile sent me a link to one he uses which looked really good as well. Cant remember which one it was, (Emile, it was the blue one)!</div>
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<div>kind regards</div>
<div>James<br></div>
<div class="gmail_quote">On 8 June 2014 19:47, swaters via Personal_Submersibles <span dir="ltr"><<a href="mailto:personal_submersibles@psubs.org" target="_blank">personal_submersibles@psubs.org</a>></span> wrote:<br>
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<div>Thanks for the help on the O2 and CO2 meter guys.</div>
<div>-Scott Waters</div>
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<div style="COLOR:#575757;FONT-SIZE:75%">Sent from my U.S. Cellular© Smartphone</div></div>
<div><br>Emile van Essen via Personal_Submersibles <<a href="mailto:personal_submersibles@psubs.org" target="_blank">personal_submersibles@psubs.org</a>> wrote:<br></div>
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<p class="MsoNormal"><font color="navy" face="Arial"><span style="FONT-FAMILY:Arial;COLOR:navy;FONT-SIZE:10pt" lang="EN-GB">For O2 is this a nice instrument:<u></u><u></u></span></font></p>
<p class="MsoNormal"><font color="navy" face="Arial"><span style="FONT-FAMILY:Arial;COLOR:navy;FONT-SIZE:10pt" lang="EN-GB"><a href="http://www.conrad.com/ce/en/product/123122/Greisinger-GMH3691-and-GGO369-Oxygen-Meter-with-Sensor?queryFromSuggest=true" target="_blank">http://www.conrad.com/ce/en/product/123122/Greisinger-GMH3691-and-GGO369-Oxygen-Meter-with-Sensor?queryFromSuggest=true</a><u></u><u></u></span></font></p>
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<p class="MsoNormal"><font color="navy" face="Arial"><span style="FONT-FAMILY:Arial;COLOR:navy;FONT-SIZE:10pt" lang="EN-GB">It has adjustable Hi /Lo alarms and is temp/ pressure compensated. <u></u><u></u></span></font></p>
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<p class="MsoNormal"><font color="navy" face="Arial"><span style="FONT-FAMILY:Arial;COLOR:navy;FONT-SIZE:10pt" lang="EN-GB">For CO2 Look at beer brewery suppliers. They use portable and wall mounted analyzers where beer is stored in large tanks..<u></u><u></u></span></font></p>
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<p class="MsoNormal"><b><font face="Tahoma"><span style="FONT-FAMILY:Tahoma;FONT-SIZE:10pt;FONT-WEIGHT:bold">Van:</span></font></b><font face="Tahoma"><span style="FONT-FAMILY:Tahoma;FONT-SIZE:10pt"> Personal_Submersibles [mailto:<a href="mailto:personal_submersibles-bounces@psubs.org" target="_blank">personal_submersibles-bounces@psubs.org</a>] <b><span style="FONT-WEIGHT:bold">Namens </span></b>via Personal_Submersibles<br>
<b><span style="FONT-WEIGHT:bold">Verzonden:</span></b> zondag 8 juni 2014 2:07<br><b><span style="FONT-WEIGHT:bold">Aan:</span></b> Personal Submersibles General Discussion<br><b><span style="FONT-WEIGHT:bold">Onderwerp:</span></b> Re: [PSUBS-MAILIST] CO2 ppm</span></font><u></u><u></u></p>
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<p class="MsoNormal"><font color="black" face="Verdana"><span style="FONT-FAMILY:Verdana;COLOR:black;FONT-SIZE:10pt">Does anyone know of a O2 and CO2 meter that you can buy off the shelf?<u></u><u></u></span></font></p></div>
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<p class="MsoNormal"><font color="black" face="Verdana"><span style="FONT-FAMILY:Verdana;COLOR:black;FONT-SIZE:10pt">Thanks,<u></u><u></u></span></font></p></div>
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<p class="MsoNormal"><font color="black" face="Verdana"><span style="FONT-FAMILY:Verdana;COLOR:black;FONT-SIZE:10pt">Scott Waters <u></u><u></u></span></font></p></div>
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<p style="MARGIN-BOTTOM:12pt" class="MsoNormal"><font color="black" face="Verdana"><span style="FONT-FAMILY:Verdana;COLOR:black;FONT-SIZE:10pt">-------- Original Message --------<br>Subject: Re: [PSUBS-MAILIST] CO2 ppm<br>
From: "Sean T. Stevenson via Personal_Submersibles"<br><<a href="mailto:personal_submersibles@psubs.org" target="_blank">personal_submersibles@psubs.org</a>><br>Date: Sat, June 07, 2014 4:39 pm<br>To: Personal Submersibles General Discussion<br>
<<a href="mailto:personal_submersibles@psubs.org" target="_blank">personal_submersibles@psubs.org</a>><u></u><u></u></span></font></p></div>
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</span></font></p><div><font color="black" face="Verdana">Hank, 0.5% by volume is your maximum allowable, which is 5000 ppm, so technically that reading is okay; however if that is steady state, it doesn't provide a lot of margin for error. How are you measuring the CO2? I would check the calibration of the transducer, and also check that in an elevated CO2 environment (unmanned), turning the scrubber on will bring the level down to ~0 after some period of time. The scrubber needs to keep up with the worst-case breathing / metabolism rate of the occupants. Under ideal conditions (low stress, low exertion, fresh scrubber media), the scrubber should be capable of keeping the CO2 level at the low end of the allowable range. A slow and steady climb in level is your indication that the media is becoming exhausted - you don't want to lose that early warning by operating close to maximum.<br>
<br>Sean<br><br><br></font></div><font color="black" face="Verdana">
<div>On 2014-06-07 17:26, hank pronk via Personal_Submersibles wrote:<u></u><u></u></div></font>
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<p style="BACKGROUND:white" class="MsoNormal"><font color="black" size="3" face="Helvetica Neue"><span style="FONT-FAMILY:'Helvetica Neue';COLOR:black;FONT-SIZE:12pt">I am heading to Slocan Lake tomorrow for work and a sub dive. Today I did another life support test and the best I can do is 3700 ppm CO2, I think the absorbent is not so good or something. Is 3700ppm good to go.<u></u><u></u></span></font></p>
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<p style="BACKGROUND:white" class="MsoNormal"><font color="black" size="3" face="Helvetica Neue"><span style="FONT-FAMILY:'Helvetica Neue';COLOR:black;FONT-SIZE:12pt">Hank<u></u><u></u></span></font></p></div></div>
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