From personal_submersibles at psubs.org Wed Oct 18 10:25:04 2023 From: personal_submersibles at psubs.org (Philippe Robert via Personal_Submersibles) Date: Wed, 18 Oct 2023 10:25:04 -0400 Subject: [PSUBS-MAILIST] K-350 conning tower hatch question Message-ID: Hi All, I would like to know if someone have the k-350 plan, what is the specification of the dish on the conning tower hatch. Regards Philippe -------------- next part -------------- An HTML attachment was scrubbed... URL: From personal_submersibles at psubs.org Mon Oct 23 16:45:30 2023 From: personal_submersibles at psubs.org (via Personal_Submersibles) Date: Tue, 24 Oct 2023 09:45:30 +1300 Subject: [PSUBS-MAILIST] FW: O2 and CO2 sensors In-Reply-To: References: Message-ID: <049701da05f1$de2b5550$9a81fff0$@gmail.com> Just looking at old emails on sensors for O2 and CO2 to try and find best bangs for bucks. With the advance of technology over the last 10 years what are regarded by P-Subbers as the best to buy these days? Regards, Hugh -------------- next part -------------- An HTML attachment was scrubbed... URL: From personal_submersibles at psubs.org Mon Oct 23 21:00:02 2023 From: personal_submersibles at psubs.org (Jon Wallace via Personal_Submersibles) Date: Tue, 24 Oct 2023 01:00:02 +0000 (UTC) Subject: [PSUBS-MAILIST] FW: O2 and CO2 sensors In-Reply-To: <049701da05f1$de2b5550$9a81fff0$@gmail.com> References: <049701da05f1$de2b5550$9a81fff0$@gmail.com> Message-ID: <185448241.1613019.1698109202105@mail.yahoo.com> I use sensors from CO2METER.com?? Jon On Monday, October 23, 2023 at 04:47:37 PM EDT, via Personal_Submersibles wrote: ? ? ? Just looking at old emails on sensors for O2 and CO2 to try and find best bangs for bucks. With the advance of technology over the last 10 years what are regarded by P-Subbers as the best to buy these days? Regards, Hugh ? ? _______________________________________________ Personal_Submersibles mailing list Personal_Submersibles at psubs.org http://www.psubs.org/mailman/listinfo.cgi/personal_submersibles -------------- next part -------------- An HTML attachment was scrubbed... URL: From personal_submersibles at psubs.org Tue Oct 24 08:27:28 2023 From: personal_submersibles at psubs.org (Cliff Redus via Personal_Submersibles) Date: Tue, 24 Oct 2023 07:27:28 -0500 Subject: [PSUBS-MAILIST] FW: O2 and CO2 sensors In-Reply-To: <049701da05f1$de2b5550$9a81fff0$@gmail.com> References: <049701da05f1$de2b5550$9a81fff0$@gmail.com> Message-ID: <0034A1CC-2E3F-43C1-98B5-B19825E298D5@gmail.com> I use https://www.co2meter.com/products/k-30-fr-co2-sensor This is an inexpensive 0-10,000 ppm co2 sensor. Interfaces with plc through analog voltage input module. With my use on R300, they last about 5 years. Cliff Sent from my iPhone > On Oct 23, 2023, at 3:46 PM, via Personal_Submersibles wrote: > > ? > > > > Just looking at old emails on sensors for O2 and CO2 to try and find best bangs for bucks. > With the advance of technology over the last 10 years what are regarded by P-Subbers as the best to buy these days? > Regards, > Hugh > > > _______________________________________________ > Personal_Submersibles mailing list > Personal_Submersibles at psubs.org > http://www.psubs.org/mailman/listinfo.cgi/personal_submersibles -------------- next part -------------- An HTML attachment was scrubbed... URL: From personal_submersibles at psubs.org Tue Oct 24 09:04:38 2023 From: personal_submersibles at psubs.org (Jon Wallace via Personal_Submersibles) Date: Tue, 24 Oct 2023 13:04:38 +0000 (UTC) Subject: [PSUBS-MAILIST] FW: O2 and CO2 sensors In-Reply-To: <0034A1CC-2E3F-43C1-98B5-B19825E298D5@gmail.com> References: <049701da05f1$de2b5550$9a81fff0$@gmail.com> <0034A1CC-2E3F-43C1-98B5-B19825E298D5@gmail.com> Message-ID: <1110895771.76217.1698152678799@mail.yahoo.com> I opted for the following CO2 and O2 sensors.https://www.co2meter.com/collections/1-percent-co2-sensor/products/cozir-10000-ppm-co2-temperature-humidity-sensor https://www.co2meter.com/collections/oxygen-sensors/products/25-percent-oxygen-sensor I interface with both via Serial communication.? They will work with any microprocessor that has serial capability.? There's a project page that describes how to use them along with PCB gerber files and software.??http://www.psubs.org/community/projects/ Jon On Tuesday, October 24, 2023 at 08:30:23 AM EDT, Cliff Redus via Personal_Submersibles wrote: I use https://www.co2meter.com/products/k-30-fr-co2-sensor This is an?inexpensive 0-10,000 ppm co2 sensor. ?Interfaces with plc through analog voltage input module. ?With my use on R300, they last about 5 years. Cliff Sent from my iPhone On Oct 23, 2023, at 3:46 PM, via Personal_Submersibles wrote: ? ? ? ? Just looking at old emails on sensors for O2 and CO2 to try and find best bangs for bucks. With the advance of technology over the last 10 years what are regarded by P-Subbers as the best to buy these days? Regards, Hugh ? ? _______________________________________________ Personal_Submersibles mailing list Personal_Submersibles at psubs.org http://www.psubs.org/mailman/listinfo.cgi/personal_submersibles _______________________________________________ Personal_Submersibles mailing list Personal_Submersibles at psubs.org http://www.psubs.org/mailman/listinfo.cgi/personal_submersibles -------------- next part -------------- An HTML attachment was scrubbed... URL: From personal_submersibles at psubs.org Tue Oct 24 14:54:34 2023 From: personal_submersibles at psubs.org (Alan James via Personal_Submersibles) Date: Tue, 24 Oct 2023 18:54:34 +0000 (UTC) Subject: [PSUBS-MAILIST] FW: O2 and CO2 sensors In-Reply-To: <1110895771.76217.1698152678799@mail.yahoo.com> References: <049701da05f1$de2b5550$9a81fff0$@gmail.com> <0034A1CC-2E3F-43C1-98B5-B19825E298D5@gmail.com> <1110895771.76217.1698152678799@mail.yahoo.com> Message-ID: <646827924.1994624.1698173674367@mail.yahoo.com> Wow, that's expensive at US $259-There are a few options on Ali Express that are 0-5000ppmfor around N.Z. $20- that have good reviews. However I am not an expert and wouldnt know if they are good quality.?They are compatible with Arduino etc.?You could buy 3 at that price & compare the readings to indicate when they fail. Have a spare one to just unplug and replace.Alan Sent from Yahoo Mail on Android On Wed, 25 Oct 2023 at 2:07 am, Jon Wallace via Personal_Submersibles wrote: _______________________________________________ Personal_Submersibles mailing list Personal_Submersibles at psubs.org http://www.psubs.org/mailman/listinfo.cgi/personal_submersibles -------------- next part -------------- An HTML attachment was scrubbed... URL: From personal_submersibles at psubs.org Tue Oct 24 15:52:02 2023 From: personal_submersibles at psubs.org (Jon Wallace via Personal_Submersibles) Date: Tue, 24 Oct 2023 19:52:02 +0000 (UTC) Subject: [PSUBS-MAILIST] FW: O2 and CO2 sensors In-Reply-To: <646827924.1994624.1698173674367@mail.yahoo.com> References: <049701da05f1$de2b5550$9a81fff0$@gmail.com> <0034A1CC-2E3F-43C1-98B5-B19825E298D5@gmail.com> <1110895771.76217.1698152678799@mail.yahoo.com> <646827924.1994624.1698173674367@mail.yahoo.com> Message-ID: <34302085.314329.1698177122921@mail.yahoo.com> Hi Alan, For sure they are a bit upscale in terms of price however CO2 readings are sensitive to temp and relative humidity...O2 readings are sensitive to pressure and temperature.? The units I opted for include those additional sensors internally and factor them into the output automatically, which was important to me for accuracy.? Given that they both have a greater than 5 year life span, the amortized cost is around $50/year which I found acceptable. Jon On Tuesday, October 24, 2023 at 02:56:41 PM EDT, Alan James via Personal_Submersibles wrote: Wow, that's expensive at US $259-There are a few options on Ali Express that are 0-5000ppmfor around N.Z. $20- that have good reviews. However I am not an expert and wouldnt know if they are good quality.?They are compatible with Arduino etc.?You could buy 3 at that price & compare the readings to indicate when they fail. Have a spare one to just unplug and replace.Alan Sent from Yahoo Mail on Android On Wed, 25 Oct 2023 at 2:07 am, Jon Wallace via Personal_Submersibles wrote: _______________________________________________ Personal_Submersibles mailing list Personal_Submersibles at psubs.org http://www.psubs.org/mailman/listinfo.cgi/personal_submersibles _______________________________________________ Personal_Submersibles mailing list Personal_Submersibles at psubs.org http://www.psubs.org/mailman/listinfo.cgi/personal_submersibles -------------- next part -------------- An HTML attachment was scrubbed... URL: From personal_submersibles at psubs.org Tue Oct 24 16:24:21 2023 From: personal_submersibles at psubs.org (Alan James via Personal_Submersibles) Date: Tue, 24 Oct 2023 20:24:21 +0000 (UTC) Subject: [PSUBS-MAILIST] FW: O2 and CO2 sensors In-Reply-To: <34302085.314329.1698177122921@mail.yahoo.com> References: <049701da05f1$de2b5550$9a81fff0$@gmail.com> <0034A1CC-2E3F-43C1-98B5-B19825E298D5@gmail.com> <1110895771.76217.1698152678799@mail.yahoo.com> <646827924.1994624.1698173674367@mail.yahoo.com> <34302085.314329.1698177122921@mail.yahoo.com> Message-ID: <307295023.2053820.1698179061294@mail.yahoo.com> Thanks Jon,Can you remember what ABS or DNV-GL require re range of monitoring? I am tempted to buy 2 of the $26- infrared units on Ali & set them up & compare their outputs.The specs seem good & waterproof.These are 0-5000ppm.Regards Alan Sent from Yahoo Mail on Android On Wed, 25 Oct 2023 at 8:53 am, Jon Wallace via Personal_Submersibles wrote: _______________________________________________ Personal_Submersibles mailing list Personal_Submersibles at psubs.org http://www.psubs.org/mailman/listinfo.cgi/personal_submersibles -------------- next part -------------- An HTML attachment was scrubbed... URL: From personal_submersibles at psubs.org Tue Oct 24 18:42:51 2023 From: personal_submersibles at psubs.org (Jon Wallace via Personal_Submersibles) Date: Tue, 24 Oct 2023 22:42:51 +0000 (UTC) Subject: [PSUBS-MAILIST] FW: O2 and CO2 sensors In-Reply-To: <307295023.2053820.1698179061294@mail.yahoo.com> References: <049701da05f1$de2b5550$9a81fff0$@gmail.com> <0034A1CC-2E3F-43C1-98B5-B19825E298D5@gmail.com> <1110895771.76217.1698152678799@mail.yahoo.com> <646827924.1994624.1698173674367@mail.yahoo.com> <34302085.314329.1698177122921@mail.yahoo.com> <307295023.2053820.1698179061294@mail.yahoo.com> Message-ID: <1762932114.2091660.1698187371574@mail.yahoo.com> Honestly I don't, however 5000ppm seems to be industry standard limit for CO2 so I'm not convinced there's any reason to measure higher than that.? Frankly, if you get to 5000ppm then it indicates to me a problem with life support and surfacing is the right course of action.? No need to wait to see if it goes higher than that. Jon On Tuesday, October 24, 2023 at 04:26:17 PM EDT, Alan James via Personal_Submersibles wrote: Thanks Jon,Can you remember what ABS or DNV-GL require re range of monitoring? I am tempted to buy 2 of the $26- infrared units on Ali & set them up & compare their outputs.The specs seem good & waterproof.These are 0-5000ppm.Regards Alan Sent from Yahoo Mail on Android On Wed, 25 Oct 2023 at 8:53 am, Jon Wallace via Personal_Submersibles wrote: _______________________________________________ Personal_Submersibles mailing list Personal_Submersibles at psubs.org http://www.psubs.org/mailman/listinfo.cgi/personal_submersibles _______________________________________________ Personal_Submersibles mailing list Personal_Submersibles at psubs.org http://www.psubs.org/mailman/listinfo.cgi/personal_submersibles -------------- next part -------------- An HTML attachment was scrubbed... URL: From personal_submersibles at psubs.org Tue Oct 24 19:00:28 2023 From: personal_submersibles at psubs.org (Sean T. Stevenson via Personal_Submersibles) Date: Tue, 24 Oct 2023 23:00:28 +0000 Subject: [PSUBS-MAILIST] FW: O2 and CO2 sensors In-Reply-To: <307295023.2053820.1698179061294@mail.yahoo.com> References: <049701da05f1$de2b5550$9a81fff0$@gmail.com> <0034A1CC-2E3F-43C1-98B5-B19825E298D5@gmail.com> <1110895771.76217.1698152678799@mail.yahoo.com> <646827924.1994624.1698173674367@mail.yahoo.com> <34302085.314329.1698177122921@mail.yahoo.com> <307295023.2053820.1698179061294@mail.yahoo.com> Message-ID: Oxygen 18% to 23% volume, target < 21% CO2 <= 0.5% volume, target 0 (but sensor range to 1% is desireable for scrubber breakthrough test) relative humidity (where controlled) 30% - 70% cabin temperature 14?C / 57.2?F to 30?C / 86?F (from other ABS references) Sean -------- Original Message -------- On Oct. 24, 2023, 14:24, Alan James via Personal_Submersibles wrote: > Thanks Jon, > Can you remember what ABS or DNV-GL require re range of monitoring? I am tempted to buy 2 of the $26- infrared units on Ali & set them up & compare their outputs. > The specs seem good & waterproof. > These are 0-5000ppm. > Regards Alan > > [Sent from Yahoo Mail on Android](https://mail.onelink.me/107872968?pid=nativeplacement&c=Global_Acquisition_YMktg_315_Internal_EmailSignature&af_sub1=Acquisition&af_sub2=Global_YMktg&af_sub3=&af_sub4=100000604&af_sub5=EmailSignature__Static_) > >> On Wed, 25 Oct 2023 at 8:53 am, Jon Wallace via Personal_Submersibles >> wrote: >> _______________________________________________ >> Personal_Submersibles mailing list >> Personal_Submersibles at psubs.org >> http://www.psubs.org/mailman/listinfo.cgi/personal_submersibles -------------- next part -------------- An HTML attachment was scrubbed... URL: From personal_submersibles at psubs.org Tue Oct 24 19:09:57 2023 From: personal_submersibles at psubs.org (Alan James via Personal_Submersibles) Date: Tue, 24 Oct 2023 23:09:57 +0000 (UTC) Subject: [PSUBS-MAILIST] FW: O2 and CO2 sensors In-Reply-To: References: <049701da05f1$de2b5550$9a81fff0$@gmail.com> <0034A1CC-2E3F-43C1-98B5-B19825E298D5@gmail.com> <1110895771.76217.1698152678799@mail.yahoo.com> <646827924.1994624.1698173674367@mail.yahoo.com> <34302085.314329.1698177122921@mail.yahoo.com> <307295023.2053820.1698179061294@mail.yahoo.com> Message-ID: <202943500.2107340.1698188997162@mail.yahoo.com> Thanks Jon & Sean.So up to 10,000ppm is best ( if you can maintain the required accuracy in that higher range.)Alan Sent from Yahoo Mail on Android On Wed, 25 Oct 2023 at 12:03 pm, Sean T. Stevenson via Personal_Submersibles wrote: _______________________________________________ Personal_Submersibles mailing list Personal_Submersibles at psubs.org http://www.psubs.org/mailman/listinfo.cgi/personal_submersibles -------------- next part -------------- An HTML attachment was scrubbed... URL: