omichalis
Date: Sun Jul 18, 2010 9:46 am ((PDT))
in the worst of the cases
if some water passes inside the jacks, would that cause any serious damage =
to the hydrophones ??
On 18 =CE=99=CE=BF=CF=85=CE=BB 2010, at 7:34 =CE=BC.=CE=BC., Marinos Koutso=
michalis wrote:
> that seems really interesting !!
> thx !
>
> @Richard
>
> I have the dolphin ear pros, and want to experiment in various depths
>
> the thing is that having something like 50m cable or more in a hydrophone=
is not aways handy.. actually it is rarely handy, as I' ll have to carry 5=
0m or so of cable (in each hydrophone) anytime I want to record in a a smal=
l lake or pod..
>
> cutting cables is out of the question,
>
> so I was thinking to have an extension cable and use some kind of substan=
ce (like the Scotch Fill) to insult the connection on the fly !
>
> let aside extension cables are expensive and having a dedicated set only =
for my hydrophones might be a little too much..
>
> thx !
>
> On 18 =CE=99=CE=BF=CF=85=CE=BB 2010, at 6:40 =CE=BC.=CE=BC., Mitch Hill w=
rote:
>
> > At 11:59 AM 7/18/2010 +0300, you wrote:
> > >speaking of hydrophones,
> > >
> > >I want to make extension cables for my hydrophones, so I can dip them=
> > >further down,
> > >
> > >the obvious solution would be to completely coat the joints with some=
> > >waterproof substance, maybe slicon or rubber,
> > >
> > >but I' m wondering is there is any other way to ensure a waterproof
> > >connection while remaining flexible on the same time.. Maybe there is =
some
> > >kind of waterproof XLR plug out there ? or maybe some kind of vaccum c=
ase
> > >that could be handy ?
> > >
> > >anybody tried sth similar ??
> >
> > When I was working in oceanography, a common method of waterproofing a=
> > connection as you describe was to wrap it using a 3M product called
> > "ScotchFil" and then overwrap it with Scotch 33 electrical tape to prot=
ect
> > the ScotchFill which is a very soft self vulcanizing rubber type
> > material. Scotchfil is actually a putty in tape form, it comes in a 5 f=
oot
> > long roll, 1 1/2" wide, about 1/8" thick... It is made and sold as a hi=
gh
> > voltage insulation material...
> >
> > The neat thing about Scotchfil, its easy to remove when you want to
> > separate the joint again, slit it with a knife and peel it off like
> > removing the skin from a banana...
> >
> > I did high pressure testing in water to determine the reliability of a=
> > Scotchfil sealed joint at 15,000 lbs/sq in. for a project that required=
> > going to maximum ocean depth and found the Scotchfil method was 100%
> > reliable. For these depths we used Alpha FIT300 heat shrink tube over t=
he
> > joint for mechanical strength...
> >
> > Its an incredibly simple way to make a foolproof underwater connection.=
..
> >
> > --
> >
> > Thanks,
> > Mitch & Shadow...
> >
> > http://www.4shared.com/dir/UTASxktL/wildlife.html
> >
> > Shadow's area: http://www.4shared.com/dir/ecfWjyZb/Shadow.html
> >
> >
> >
>
>
>
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