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Mark Chase · 9th November 2007, 13:59

Quote: (Originally Posted by doug allen)

I searched...(not extensively mind ya'll)...this site about this subject and nothing came up immediately....but I do have a question about O2 sensor life.

Anyway....I've had to replace 4 O2 sensors in my rebreather since July 07....seems everytime I fire this sucker up on dive day I get a "Fail" error on one of the three sensors on the Hammerhead.....3 of them have been replaced under warranty...the other one was a spare that I got with the unit....

Has anyone else experienced early failure of O2 sensors this frequently?

When I baught cells for the HH I had to specifie thay had a minimum 9mv output in air. AP had the test output on the bags and seemed happy to do this for me.

I would soak the cells for 24hours in pure 02 to wake them up, then air them for a while before initial calibration.

Thats about the best you can do. If that doesent work its dodgy cells or a loom problem.

Remember to use Biox or Pure Gold on the cell plug conectors when swapping cells.

ATB

Mark

ATB

9th November 2007, 13:59	#5 (permalink)
Mark Chase I go down for ages Current Rebreather/s: Classic Kiss Other Rebreather/s: Inspiration Classic Join Date: Jan 2005 Location: Kent Posts: 2,699	Re: O2 sensor failures Quote: (Originally Posted by doug allen) I searched...(not extensively mind ya'll)...this site about this subject and nothing came up immediately....but I do have a question about O2 sensor life. Anyway....I've had to replace 4 O2 sensors in my rebreather since July 07....seems everytime I fire this sucker up on dive day I get a "Fail" error on one of the three sensors on the Hammerhead.....3 of them have been replaced under warranty...the other one was a spare that I got with the unit.... Has anyone else experienced early failure of O2 sensors this frequently? When I baught cells for the HH I had to specifie thay had a minimum 9mv output in air. AP had the test output on the bags and seemed happy to do this for me. I would soak the cells for 24hours in pure 02 to wake them up, then air them for a while before initial calibration. Thats about the best you can do. If that doesent work its dodgy cells or a loom problem. Remember to use Biox or Pure Gold on the cell plug conectors when swapping cells. ATB Mark ATB __________________ Is it supposed to make that noise ? I took my unit to the dive shop and demanded they bolt on every thing that would fit. Join my elite diving teem and get a Tshirt "Doing It Chasey"Hammerhead Eccr Advanced Diving System
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