[PSUBS-MAILIST] Pressure change indicator?

[Alan via Personal_Submersibles]

Hi Lasse,
a couple of ways of doing it are to use a Parker pressure gauge or similar mounted
inside the hull either high up, with a tube from it to the outside, coming in low down in your
sub. ( so only air not sea water gets to the gauge ). Or as one psubber has done, have
an oil filled tube coming to the pressure gauge, with a "solder sucker" on the tube
mounted outside the hull.
The digital gauge I have has options of feet, bar, psi, inches, & other things I can't 
remember.
Hope that's clear.
Regards Alan

Sent from my iPad

> On 19/09/2014, at 6:21 pm, hank pronk via Personal_Submersibles <personal_submersibles at psubs.org> wrote:
> 
> 
> Hi Lasse,
> I have not heard of a gauge that tells you if you are sinking or surfacing. I use a scuba depth gauge outside my port at the moment.  I can tell if I am stationary when the needle is not moving.  Other members have digital depth gauges that would work better yet because of the degree of accuracy.  ea water gets to the gauge
> Another solution is a depth sonar (fish finder)  That will tell you the depth of water below you and it will tell you if you are moving up down or not at all.  
> You could mount a scuba digital depth gauge outside the passenger window and they could watch the depth change while watching the scenery.
> Hank --------------------------------------------
> On Fri, 9/19/14, Lasse Schmidt via Personal_Submersibles <personal_submersibles at psubs.org> wrote:
> 
> Subject: [PSUBS-MAILIST] Pressure change indicator?
> To: "Personal Submersibles General Discussion" <personal_submersibles at psubs.org>
> Received: Friday, September 19, 2014, 5:18 AM
> 
> Hi,
> 
> I´m interested in finding two instruments, I hope I can get
> some pointers from you guys.
> First of all, i´d like to find an instrument that shows if
> the sub is rising or descending, like the ones found in
> airplane (variometer). I have googled  and googled but
> can´t find anything.
> Does anyone have any suggestions how i can see (with an
> instrument) if the sub is stationary or moving up and down?
> 
> Secondly, I´m looking for a digital solution to show my
> passengers how deep we are (or what pressure is outside), I
> have been told that there are such instruments but could´t
> find any.
> 
> All pointers and suggestions to specific products is
> appreciated.
> Below is a news coverage about our sub, made by swedish
> television.
> http://www.tv4.se/nyhetsmorgon/klipp/maria-forsblom-pr%C3%B6var-livet-under-ytan-2784847
> 
> 
> Cheers, Lasse
> 
> 
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