[PSUBS-MAILIST] Penetrator Air Void Question/Concern

[Alan James via Personal_Submersibles]

Rick,one of my current projects is making LED lights.I have small 60W Bridgelux LEDs ($6-each) & are using a boost / buck constant current driver that can take an input of 12-60V & output anywhere in between at the required amps ($12-)I am keeping the driver inside the hull, as is Cliff who is working on a similar project.Next step is to find a suitable glass lens for it.I think Emile sells LED lights.Alan

      From: Rick Patton via Personal_Submersibles <personal_submersibles at psubs.org>
 To: Personal Submersibles General Discussion <personal_submersibles at psubs.org> 
 Sent: Wednesday, February 1, 2017 8:46 AM
 Subject: Re: [PSUBS-MAILIST] Penetrator Air Void Question/Concern
   
Would love to hear from anyone who is presently using LED's for their outside lighting. I am getting ready to fab the housings for my outer lights and am tempted to use a bulb and reflector that is used in a divers flashlight that has a reflector OD of say 3" to 4",  but have heard a lot about LED's in the group. Also like to hear what people are using for an altimeter for monotering the O2 levels. I already have a gas monotering device that checks for 02 and Co2 so would I even need an altimeter?Thanks
Rick
On Tue, Jan 31, 2017 at 6:37 AM, via Personal_Submersibles <personal_submersibles at psubs.org> wrote:

If there is room for a 1/8" pipe nipple inboard, you could put a small pressure gauge on the panel somewhere. If you get an increase, it would tell you the outer seal leaked. That's the way we did it for the oil-filled space between double shaft seals at Perry. Don't see why it wouldn't work for this application, as well.Vance


-----Original Message-----
From: Steve McQueen via Personal_Submersibles <personal_submersibles at psubs. org>
To: personal_submersibles <personal_submersibles at psubs. org>
Sent: Tue, Jan 31, 2017 9:51 am
Subject: [PSUBS-MAILIST] Penetrator Air Void Question/Concern

All, I am running a multi conductor cable (11-12mm OD) for my 12V stern thruster thru an existing 1/2" pipe nipple in the aft head of my K-250.

I am using a Blueglobe gland fitting (BG 220 VA, rated @ 1,160 psig) on the outboard pressure side of the nipple and a Conax gland (PG5-500-A-N,rated @ 800 psig) for the gland fitting inboard.

I was originally only going to have interior Conax gland and let the pipe free flood. Then I decided I wanted to have redundancy and keep the pipe interior dry to help prevent corrosion (it is old school (not SS)). 

My question: Is the air void that will exist between the 2 gland fittings a concern? Think empty pipe with both ends capped. I'm thinking not...


Thanks,
Steve
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