[PSUBS-MAILIST] Re: pressure sensors

["Jens Laland" <laland@artematrix.org>]

I wonder if an isolation fitting (using a flexible rubber membrane) could
be used to isolate the pressure sensor element from the seawater; i.e. by
exposing the delicate component to distilled water or similar.

** Although, there is also something to be said for a mechanical gauge with
** calibrated face too...

Here is a few images showing how I converted a 160mm (6-1/16") OD german
Tecsis 0-10 bar class 1.0 pressure gauge into a 0-100 meter seawater depth
gauge (Tiefenmesser).

ftp://ftp.artematrix.org/personal_submarine/instruments/diy-mod1_160mmOD-Tecsis-gauge.jpg

ftp://ftp.artematrix.org/personal_submarine/instruments/diy-mod2_pull_needle4.jpg

ftp://ftp.artematrix.org/personal_submarine/instruments/diy-mod3a_dial.jpg

ftp://ftp.artematrix.org/personal_submarine/instruments/diy-mod4b_modified_10-bar_pressure-gauge.jpg

I would be very interested in your comments about using and trusting such
a product.

Best regards,
Jens Laland




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