Dive Computer Ramblings

[Robert C. Helling]

On 10 Sep 2014, at 15:42, Martin Gysel <me at bearsh.org> wrote:

Martin,

> the company I work for has that experience (electronics, watertight and
> pressure related stuff) but I personally doubt there's much demand for
> such a device in the diving community. most people I can think of care
> for the tank pressure during the dive not afterwards.
> but we would be happy to develop such a device if someone is willing to
> pay for it :) of course, as Davide mentioned, kickstarter would be an
> option... need to think about it.

with that type of professional experience, could you tell me if my price tag of 120$ for the pressure sensor (up to 300bar, better 350bar, 7/16 UNF connector) could be significantly lowered (and I am not talking about buying 1000 at once) by using something different (I would think that it could be really slow, like one datapoint per 10s would be good enough and an accuracy in the percent range would be sufficient as well).

What about the case? Cut it out from a block of Delrin (POM)? That should have a price insignificant compared to the rest. Would I have to fill it to make is resist the pressure or would a box of air be ok?

What do you think?

Best
Robert
--                                                                              
.oOo.oOo.oOo.oOo.oOo.oOo.oOo.oOo.oOo.oOo.oOo.oOo.oOo.oOo.oOo.oOo.oOo.oOo.oOo.oO 
Robert C. Helling     Elite Master Course Theoretical and Mathematical Physics  
                      Scientific Coordinator                                   
                      Ludwig Maximilians Universitaet Muenchen, Dept. Physik    
print "Just another   Phone: +49 89 2180-4523  Theresienstr. 39, rm. B339       
    stupid .sig\n";   http://www.atdotde.de 

-------------- next part --------------
A non-text attachment was scrubbed...
Name: signature.asc
Type: application/pgp-signature
Size: 495 bytes
Desc: Message signed with OpenPGP using GPGMail
URL: <http://lists.hohndel.org/pipermail/subsurface/attachments/20140910/c00fd6f8/attachment.sig>