Re: [PSUBS-MAILIST] Leak Alarm

["Dan H." <jmachine@adelphia.net>]

Carl,
I'm sure there are better methods, but this $30 unit, battery and shipping
included, works fine.  Why use five lasers in place of a $30 box, $10 worth
of Radio Shack stuff and a few wires.  I have one box and it monitors all
five pods.

Lasers sounds like overkill, don't you think?

Thanks,
Dan H.
----- Original Message -----
From: "Coalbunny" <coalbunny@vcn.com>
To: <personal_submersibles@psubs.org>
Sent: Friday, March 05, 2004 4:15 PM
Subject: Re: [PSUBS-MAILIST] Leak Alarm


> There are laser sensors that could help.  When water leaks in, it
> disrupts the laser beam and sets off an alarm.  Water can be crystal
> clear, and it'll still change the laser beam (diffraction).
> Carl
>
>
> Dan H. wrote:
>
> > Here's little unit I thought might be of interest to anyone building.
> >
> > I wanted to install something to detect any water leaking in to my
> > K-350's battery pods and the three thruster pods before it creates
> > a problem with operations.
> >
> > I fooled around with a few circuits but they were either to sensitive or
> > not sensitive enough.  I came across this little unit on the net and
> > ordered it.  It sells for around $30 including a nine volt battery and
> > shipping.
> > http://www.floodbusteronline.com/index.html
> >
> > I made my own sensors, which are no more then a piece of copper in each
> > pod, and ran wires to the unit in the hull where I can switch to "All
> > pods" or select each pod separately to determine where the leak is.  The
> > only things I needed to add to the unit were a on/off switch, a selector
> > switch and a diode in the line from each pod.
> >
> > Cheap and it works well,
> > Dan H.
>
> --
> Spotted Owl...it's what's for dinner.
>
>