Main Menu
Join Undercurrent on Facebook

The Private, Exclusive Guide for Serious Divers Since 1975 | |
For Divers since 1975
The Private, Exclusive Guide for Serious Divers Since 1975
"Best of the Web: scuba tips no other
source dares to publish" -- Forbes
September 2016    Download the Entire Issue (PDF) Available to the Public Vol. 31, No. 9   RSS Feed for Undercurrent Issues
What's this?

A Diving Computer Postscript

from the September, 2016 issue of Undercurrent   Subscribe Now

On reading Calculating a Healthy Ascent in the August issue of Undercurrent, Jim Reilly was prompted to write to us, raising the specter of the likelihood of pressure sensors being inaccurate. He notes that algorithms may be all very well, but if a diving computer reads a wrong depth, it can lead to problems.

Pressure sensor technology has come a long way since diving computers were first mooted. While the original computer, the EDGE, indeed had pressure sensor problems and several divers were bent using it, over two decades of testing numerous computers side-by- side for comparison purposes, I've never found this to be a problem. If a pressure sensor does fail, it's often because the computer has not been rinsed effectively in fresh, clean water after use. Depth sensors can be obstructed by salt crystals. Those who change the batteries themselves can overlook this.

When a dive store changes the battery of a diving computer, they check it afterwards in a test pressure chamber, both to check for leaks and to observe that the computer depth reading conforms to the calibrated depth gauge of the pressure pot. If it does not, the depth sensor might respond to cleaning or it might need replacing.

-- John Bantin

I want to get all the stories! Tell me how I can become an Undercurrent Online Member and get online access to all the articles of Undercurrent as well as thousands of first hand reports on dive operations world-wide

Find in  

| Home | Online Members Area | My Account | Login | Join |
| Travel Index | Dive Resort & Liveaboard Reviews | Featured Reports | Recent Issues | Back Issues |
| Dive Gear Index | Health/Safety Index | Environment & Misc. Index | Seasonal Planner | Blogs | Free Articles | Book Picks | News |
| Special Offers | RSS | FAQ | About Us | Contact Us | Links |

Copyright © 1996-2022 Undercurrent (
3020 Bridgeway, Ste 102, Sausalito, Ca 94965
All rights reserved.