Re: [PSUBS-MAILIST] Leak Alarm

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

Laurent  /  Stan

When I first read your reply about using PLATINUM for the detector my
reaction was; around here, PLATINUM would be as easy to acquire as "hen'
teeth," then Stan mentioned spark plugs and I felt stupid.  That's the great
thing about having a group like this to bounce things off.

I was debating between copper and stainless when I was installing the
detectors plates.  I think I'm going to leave them copper as they are but
would use the spark plug idea if I ever redesign it.  My detection system is
only an emergency indicator.  If all is well, it should never see water,
fresh or salt water.   The copper will be protected unless I have a BIGGER
problem.

The actual battery powered sensor was the part I was posting for.  It's a
great unit, works well and easy to take apart and modify as you like.  The
whole "ball of wax" for $30.

Spark plug, cheap and dirty, right in front of my nose all the time.
(shaking my head)
Thanks, Dan H.

----- Original Message -----
From: <SFreihof@aol.com>
To: <personal_submersibles@psubs.org>
Sent: Friday, March 05, 2004 11:28 AM
Subject: Re: [PSUBS-MAILIST] Leak Alarm


> Just a thought, but would a strategically placed spark plug work in line
with an indicator bulb?  Open circuit (no light) indicates no water in the
gap, closed circuit (red light?) means water is present.  You can get them
with a platinum electrode, easy to replace, and inexpensive...
>
> Stan
>
> In a message dated 3/5/2004 8:24:40 AM Eastern Standard Time,
laurent_rouffignac@yahoo.com writes:
>
> > Hi Dan,
> >
> > You shouldn't use copper for the detection. Even if
> > it's a little bit more expensive try platinum probes
> > to avoid corosion, especially if you have to "test" it
> > with salt water.
> >
> > Laurent
>