How to calibrate your Shearwater rebreather electronics

[@Josh-hr5mc]

This channel is so underrated. Quick valuable priceless information

[@thekid9989]

Thanks, I start my training on my Back lung Prism 2 rebreather this spring/summer. Looking forward to expanding my knowledge and learning new skills.

[@shae7210]

Thanks mate, made it simple to understand - Cheers from Australia

[@uncatila]

To check your sencors after the calibration. Dive to 20 feet and oxigen flush. If your Shearwater reads 1.6 your cells are good and don't need to be changed. Have spair cells just in case one showed failure at this test.

[@SeattleRingHunter]

4:10 this also indicates to the tester that the three O2 sensor are still reporting as intended within the expected and acceptable range. As the galvanic O2 chemical reactive sensors age this is a as all tech divers know is a major safety point stay on top of. That being said we still hear of divers diving on expired O2 sensors to their dismay... Sad really but we need to be beyond religious on GO/NO GO testing!

[@jeffpack1502]

Head off calibrate on a Meg, easy breezy. :) No flush required.

[@DivetechLtdWestBay]

But your trim doesn't look nearly as good ;-) And it also weighs about twice as much

[@toddshoemaker4285]

why don't you just calibrate it to air and save the oxygen?

[@rik16256]

Because of the decay for the cells

[@toddshoemaker4285]

@@SeattleRingHunter I would want to calibrate the re-breather as close to where I wanted it, or where it should be, when being used. If you calibrate it with air, it would be most accurate at air, and become less accurate as O2 decreased/increased. If you calibrate it at O2, it would most accurate at O2 and become less accurate as the O2 dropped. Air is ~1/4 of O2 -- quite far away. Furthermore and more importantly, having a complicated calibration procedure is not a good idea when your life is on the line.