[PSUBS-MAILIST] Personal_Submersibles Digest, Vol 17, Issue 21
Alan James via Personal_Submersibles
personal_submersibles at psubs.org
Fri Nov 14 21:40:33 EST 2014
Roberto,I have copied & pasted a description of Cliff Redus's system.Something like he describes is relatively cheap & may save you a lot of work.He plugs everything in to a plc & sets high & low alarms & can control it off his touch screen.There is a good description of the whole system somewhere. If you are interested it should bepossible to dig it up. There are pictures of it in his Psubs project page.Alan On the R300, I have life support module I call the AMOC system (Air monitoring and Oxygen Control). Connected to the box is a 1/4" SS tubing with Swagelok fittings connected to a O2 supply from an external 2200 psig O2 bottle. I fill this with welding O2 with a whip. In the AMOC module is a medical pressure reducing regulator (Hudson model 2000). This regulator reduces the pressure to around 5 psig. The pressure downstream of the regulator is adjustable with a maximum rate of 15 SLPM. The porting on this regulator is two 1/4" NPT HP ports and one LP port. Downstream of this regulator, I have installed an O2 thermal mass meter/ controller from Porter. The model number is 201-FSVP. This controller can be set from 0-10 SLPM via an 0-5V analog input signal. Max pressure on the O2 controller is 25 psig. This O2 controller also sends out at 0-5V analog output signal of the O2 SLPM flow rate.
Both these items were purchased on Ebay at a fraction of list. I have been very happy with the performance of these units. By measuring the O2 and CO2 percentages in the cabin, I have a PLC that opens and closes this controller to keep the cabin O2 % between 19-22%. ABS regulations requires that the O2 be held with in 18-24%. The advantage of this system is that it automatically accounts for different metabolic consumptions rates for O2. In the AMOC unit, I have a Swagelok needle valve in a bypass around this controller so that if both main and back up power are lost, the pilot can manually adjust the O2 rate into the boat.
The second part to controlling the atmosphere in the cabin is scrubbing the CO2. I initially used a axial flow filter with SodaSorb HP. I found that the axial flow filter did not work very well with CO2 in the cabin ranging from 0-7000 ppm. Part of the problem was the axial filter arrangement and part of the problem was the blower was not strong enough. At the 2012 PSUB convention in Vancouver, Alec Symth brought the scrubber he was using on Snoopy as a show and tell. His scrubber is an OTS radial filter that is used to clean air. In 2013, I switch to this type of scrubber/filer again with SodaSorb HB and the scrubber has worked much better. It consistently keeps the CO2 level below 2000 ppm with most of the time it being 1000-1500 ppm. ABS rules require that you keep O2 concentration below 5000 ppm. Part of the reason that is works better is the radial design which minimizes the pressure drop through the Sodasorb and part is that I have switched to a stronger blower.
From: roberto alvarez via Personal_Submersibles <personal_submersibles at psubs.org>
To: personal_submersibles at psubs.org; personal_submersibles-request at psubs.org
Sent: Saturday, November 15, 2014 8:32 AM
Subject: Re: [PSUBS-MAILIST] Personal_Submersibles Digest, Vol 17, Issue 21
I found this one,looks to be the clone for the mega ,not sure how will appear on the email, for this board i found
the sensors, pressure, temp,humidity, first founthe uno, cant find one with more analog outputs
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Details about SainSmart Mega2560 R3 Board ATmega2560-16AU + ATMEGA16U2 USB Cable For Arduino
2014-11-14 10:13 GMT-08:00 via Personal_Submersibles <personal_submersibles at psubs.org>:
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Today's Topics:
1. Re: Hanks Trolley (hank pronk via Personal_Submersibles)
2. Re: Hanks Trolley (Brian Cox via Personal_Submersibles)
3. arduino or microchip? (roberto alvarez via Personal_Submersibles)
4. Re: arduino or microchip? (Jon Wallace via Personal_Submersibles)
----------------------------------------------------------------------
Message: 1
Date: Fri, 14 Nov 2014 05:09:19 -0800
From: hank pronk via Personal_Submersibles
<personal_submersibles at psubs.org>
To: Personal Submersibles General Discussion
<personal_submersibles at psubs.org>
Subject: Re: [PSUBS-MAILIST] Hanks Trolley
Message-ID:
<1415970559.64432.YahooMailBasic at web125405.mail.ne1.yahoo.com>
Content-Type: text/plain; charset=iso-8859-1
Brian,
I have to say, I prefer cold to hot, I hate working in super hot weather.
Hank--------------------------------------------
On Thu, 11/13/14, Brian Cox via Personal_Submersibles <personal_submersibles at psubs.org> wrote:
Subject: Re: [PSUBS-MAILIST] Hanks Trolley
To: "Personal Submersibles General Discussion" <personal_submersibles at psubs.org>
Received: Thursday, November 13, 2014, 9:18 PM
It's finally cooled off enough here
to work outside !?
--- personal_submersibles at psubs.org
wrote:
From: hank pronk via Personal_Submersibles <personal_submersibles at psubs.org>
To: Personal Submersibles General Discussion <personal_submersibles at psubs.org>
Subject: Re: [PSUBS-MAILIST] Hanks Trolley
Date: Thu, 13 Nov 2014 07:40:56 -0800
James,
I will get some pics for you in a few days, it is -18C here
right now, hiding in my shop till it warms up.
Hank--------------------------------------------
On Thu, 11/13/14, James Frankland via Personal_Submersibles
<personal_submersibles at psubs.org>
wrote:
Subject: Re: [PSUBS-MAILIST] Hanks Trolley
To: "Personal Submersibles General Discussion" <personal_submersibles at psubs.org>
Received: Thursday, November 13, 2014, 8:58 AM
Hank,?If you could get
me some pics that would be really useful.? I haven't
been able to track one down in the UK yet although I
haven't done a lot of
research.?Found some here, but they
are in Alabama.? Bit too far away for me.? http://andersondropdecktrailers.com/?Many
thanksJames??
On 13 November 2014 12:49,
hank pronk via Personal_Submersibles <personal_submersibles at psubs.org>
wrote:
James,
Our local rental shop has one of these trailers, if you
need
some close up pictures I could get some for you.
I notice they use leaf springs, another option could be
torque flex axel stubs.? They are only a foot and a half
long and no leaf springs to deal with.
Hank--------------------------------------------
On Thu, 11/13/14, James Frankland via
Personal_Submersibles <personal_submersibles at psubs.org>
wrote:
?Subject: Re: [PSUBS-MAILIST] Hanks Trolley
?To: "Personal Submersibles General Discussion"
<personal_submersibles at psubs.org>
?Received: Thursday, November 13, 2014, 5:25 AM
?Hank,
?I'd been
?thinking of something very similar.? My concern was
not
?being able to have a full length axle.? But looking at
?those trailers it looks like its quite feasible.? And
?thinking about it, normal cars only have a stub axle on
the
?front wheels at least......?Great
?find, THANKS
?On 13 November 2014 00:53,
?hank pronk via Personal_Submersibles <personal_submersibles at psubs.org>
?wrote:
?James,
?Have a look at hydraulic scissor lift drop deck trailers
on
?e bay.? Now that is the answer in conjunction with a
?cart.? Problem is the cost, yikes!
?Hank --------------------------------------------
?On Wed, 11/12/14, James Frankland via
Personal_Submersibles
?<personal_submersibles at psubs.org>
?wrote:
??Subject: Re: [PSUBS-MAILIST] Hanks Trolley
??To: "Personal Submersibles General
Discussion"
?<personal_submersibles at psubs.org>
??Received: Wednesday, November 12, 2014, 8:35 AM
??Sounds good Hank.? Looking forward to seeing
??it.? Im going to make something similar.? Although
mine
?is
??going to be more of a very low loading trailer.? Got
?some
??real awkward new "pain in the neck" trailer
?laws
??here, so the old glory days of the trailer made from
??scaffolding poles and fittings is
??gone......regardsJames
??On 12 November 2014 13:16,
??hank pronk via Personal_Submersibles <personal_submersibles at psubs.org>
??wrote:
??Hi
??James,
??My cart is progressing well, I have modified the
wheels
?by
??welding new centers in so they fit the new axels.?
?Also
??yesterday I made the mount for the hydraulic motor
that
??drives the differential.? Today I am building the
?frame
??that holds the whole thing together.? I am dreading
?the
??ugly job, I am using old heating oil tanks for
ballast
?tanks
??and they need to be cut in half and cleaned.
??Okay, now get back to work, :-)
??Hank
??--------------------------------------------
??On Wed, 11/12/14, James Frankland via
?Personal_Submersibles
??<personal_submersibles at psubs.org>
??wrote:
???Subject: [PSUBS-MAILIST] Hanks Trolley
???To: "personal_submersibles at psubs.org"
??<personal_submersibles at psubs.org>
???Received: Wednesday, November 12, 2014, 5:17 AM
???Hi
???Hank,Just wondering how your getting on with your
???trolley cart thing modifications?(yes, I am bored
???at work)Kind regardsJames
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------------------------------
Message: 2
Date: Fri, 14 Nov 2014 07:52:53 -0800
From: Brian Cox via Personal_Submersibles
<personal_submersibles at psubs.org>
To: "Personal Submersibles General Discussion"
<personal_submersibles at psubs.org>
Subject: Re: [PSUBS-MAILIST] Hanks Trolley
Message-ID: <20141114075253.80F43E71 at m0048137.ppops.net>
Content-Type: text/plain; charset="UTF-8"
Especially welding !
--- personal_submersibles at psubs.org wrote:
From: hank pronk via Personal_Submersibles <personal_submersibles at psubs.org>
To: Personal Submersibles General Discussion <personal_submersibles at psubs.org>
Subject: Re: [PSUBS-MAILIST] Hanks Trolley
Date: Fri, 14 Nov 2014 05:09:19 -0800
Brian,
I have to say, I prefer cold to hot, I hate working in super hot weather.
Hank--------------------------------------------
On Thu, 11/13/14, Brian Cox via Personal_Submersibles <personal_submersibles at psubs.org> wrote:
Subject: Re: [PSUBS-MAILIST] Hanks Trolley
To: "Personal Submersibles General Discussion" <personal_submersibles at psubs.org>
Received: Thursday, November 13, 2014, 9:18 PM
It's finally cooled off enough here
to work outside !?
--- personal_submersibles at psubs.org
wrote:
From: hank pronk via Personal_Submersibles <personal_submersibles at psubs.org>
To: Personal Submersibles General Discussion <personal_submersibles at psubs.org>
Subject: Re: [PSUBS-MAILIST] Hanks Trolley
Date: Thu, 13 Nov 2014 07:40:56 -0800
James,
I will get some pics for you in a few days, it is -18C here
right now, hiding in my shop till it warms up.
Hank--------------------------------------------
On Thu, 11/13/14, James Frankland via Personal_Submersibles
<personal_submersibles at psubs.org>
wrote:
Subject: Re: [PSUBS-MAILIST] Hanks Trolley
To: "Personal Submersibles General Discussion" <personal_submersibles at psubs.org>
Received: Thursday, November 13, 2014, 8:58 AM
Hank,?If you could get
me some pics that would be really useful.? I haven't
been able to track one down in the UK yet although I
haven't done a lot of
research.?Found some here, but they
are in Alabama.? Bit too far away for me.? http://andersondropdecktrailers.com/?Many
thanksJames??
On 13 November 2014 12:49,
hank pronk via Personal_Submersibles <personal_submersibles at psubs.org>
wrote:
James,
Our local rental shop has one of these trailers, if you
need
some close up pictures I could get some for you.
I notice they use leaf springs, another option could be
torque flex axel stubs.? They are only a foot and a half
long and no leaf springs to deal with.
Hank--------------------------------------------
On Thu, 11/13/14, James Frankland via
Personal_Submersibles <personal_submersibles at psubs.org>
wrote:
?Subject: Re: [PSUBS-MAILIST] Hanks Trolley
?To: "Personal Submersibles General Discussion"
<personal_submersibles at psubs.org>
?Received: Thursday, November 13, 2014, 5:25 AM
?Hank,
?I'd been
?thinking of something very similar.? My concern was
not
?being able to have a full length axle.? But looking at
?those trailers it looks like its quite feasible.? And
?thinking about it, normal cars only have a stub axle on
the
?front wheels at least......?Great
?find, THANKS
?On 13 November 2014 00:53,
?hank pronk via Personal_Submersibles <personal_submersibles at psubs.org>
?wrote:
?James,
?Have a look at hydraulic scissor lift drop deck trailers
on
?e bay.? Now that is the answer in conjunction with a
?cart.? Problem is the cost, yikes!
?Hank --------------------------------------------
?On Wed, 11/12/14, James Frankland via
Personal_Submersibles
?<personal_submersibles at psubs.org>
?wrote:
??Subject: Re: [PSUBS-MAILIST] Hanks Trolley
??To: "Personal Submersibles General
Discussion"
?<personal_submersibles at psubs.org>
??Received: Wednesday, November 12, 2014, 8:35 AM
??Sounds good Hank.? Looking forward to seeing
??it.? Im going to make something similar.? Although
mine
?is
??going to be more of a very low loading trailer.? Got
?some
??real awkward new "pain in the neck" trailer
?laws
??here, so the old glory days of the trailer made from
??scaffolding poles and fittings is
??gone......regardsJames
??On 12 November 2014 13:16,
??hank pronk via Personal_Submersibles <personal_submersibles at psubs.org>
??wrote:
??Hi
??James,
??My cart is progressing well, I have modified the
wheels
?by
??welding new centers in so they fit the new axels.?
?Also
??yesterday I made the mount for the hydraulic motor
that
??drives the differential.? Today I am building the
?frame
??that holds the whole thing together.? I am dreading
?the
??ugly job, I am using old heating oil tanks for
ballast
?tanks
??and they need to be cut in half and cleaned.
??Okay, now get back to work, :-)
??Hank
??--------------------------------------------
??On Wed, 11/12/14, James Frankland via
?Personal_Submersibles
??<personal_submersibles at psubs.org>
??wrote:
???Subject: [PSUBS-MAILIST] Hanks Trolley
???To: "personal_submersibles at psubs.org"
??<personal_submersibles at psubs.org>
???Received: Wednesday, November 12, 2014, 5:17 AM
???Hi
???Hank,Just wondering how your getting on with your
???trolley cart thing modifications?(yes, I am bored
???at work)Kind regardsJames
???-----Inline Attachment Follows-----
???_______________________________________________
???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
??-----Inline Attachment Follows-----
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??Personal_Submersibles at psubs.org
??http://www.psubs.org/mailman/listinfo.cgi/personal_submersibles
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?Personal_Submersibles at psubs.org
?http://www.psubs.org/mailman/listinfo.cgi/personal_submersibles
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------------------------------
Message: 3
Date: Fri, 14 Nov 2014 09:17:12 -0800
From: roberto alvarez via Personal_Submersibles
<personal_submersibles at psubs.org>
To: personal_submersibles at psubs.org
Subject: [PSUBS-MAILIST] arduino or microchip?
Message-ID:
<CAJANxSOT24PDuL6U3+fAnj3fKi5cjNkPav9rmOVe9iuUYEGxfQ at mail.gmail.com>
Content-Type: text/plain; charset="utf-8"
Good Morning, first i am not an electronics master, was working on the co2
scrubers , then my imagination again move ahead of my hands and make me
thik that the scruber must be inteligent, based on the parameters
cabin pressure,CO2 , O2 concentration and temperature, i think that will
be helpfull a device for monitor this conditions, found a programable board
with the optional sensors, the UNO ( 4 dlls on ebay ) the barometric
pressure sensor ( 2 dlls on ebay ) the carbon monoxide sensor ( 4 dlls) ,
tilt sensors (1.75 usd) and many other sensors
with this info, this boar will check cabin pressure and co2 %, the boar can
activate a relay to let oxigen enter and keep a safe enviroment
also the tilt sensors can help me to control position in low visibility
conditions, may be will need 3 boards and several sensors that will let me
have an auxiliar control system
Another system that i need develop or know if can be develop or find is a
neutral bouyancy , based in flow of water on the vertical axle, this black
box ( because i dont know what will have inside ) will control valves on
the variable ballast system
just my ideas, if this is for sale some were ,please tell me to consider
with the arduino a complet system looks to be below 100 usd as will be
common sensors ans actuators ( relays )
i draw a system using just relays and mercury switches ( the ones that stop
the outboard when tilt,or on the ac thermosthats ) buw will take a big
space and many meters of wire, will be a heat source , a single boar can
solve this, buti need your comments, thanks
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Message: 4
Date: Fri, 14 Nov 2014 18:11:48 +0000 (UTC)
From: Jon Wallace via Personal_Submersibles
<personal_submersibles at psubs.org>
To: Personal Submersibles General Discussion
<personal_submersibles at psubs.org>
Subject: Re: [PSUBS-MAILIST] arduino or microchip?
Message-ID:
<258559042.690039.1415988708598.JavaMail.yahoo at jws106139.mail.bf1.yahoo.com>
Content-Type: text/plain; charset="utf-8"
I am using arduino mega because it has more input/output pins. ?But yes, I am designing much of the same via arduino. ?Thousands of sensors will work with them.
On Friday, November 14, 2014 12:19 PM, roberto alvarez via Personal_Submersibles <personal_submersibles at psubs.org> wrote:
Good Morning, first i am not an electronics master, was working on the co2 scrubers , then? my imagination again move ahead of my hands and make me thik that the scruber must be inteligent,? based on the parameters
cabin pressure,CO2 , O2 concentration and temperature,? i think that will be helpfull a device for monitor this conditions, found a programable board with the optional? sensors, the UNO ( 4 dlls on ebay ) the barometric pressure sensor ( 2 dlls on ebay )? the carbon monoxide sensor ( 4 dlls) , tilt sensors (1.75 usd) and many other sensors
with this info, this boar will check cabin pressure and co2 %, the boar can activate a relay to let oxigen enter and keep a safe enviroment
also the tilt sensors can help me to control position in low visibility conditions, may be will need 3 boards and several sensors that will let me have an auxiliar control system
Another system that i need develop? or know if can be develop or find is a neutral bouyancy , based in flow of water on the vertical axle, this black box ( because i dont know what will have inside )? will control valves on the variable ballast system
just my ideas, if this is for sale some were ,please tell me to consider with the arduino a complet system looks to be below 100 usd as will be common sensors ans actuators ( relays )
i draw a system using just relays and mercury switches ( the ones that stop the outboard when tilt,or on the ac thermosthats )? buw will take a big space and many meters of wire, will be a heat source , a single boar can solve this, buti need your comments, thanks
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