J-Vo
Contributor
curious
why are button gauges a liability when regular SPGs are acceptable?
My understanding is they commonly fail in spectacular fashion.
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curious
why are button gauges a liability when regular SPGs are acceptable?
If you noticed the stainless steel hoses are on a bungee and their location is on the top. In cave diving an SPG is mandatory . My regs sit against my chest for protection from cave walls and rocks. If the $hit hits the fan, I can always change out the regulator underwater using my deco or stage bottle regs.
I cave dive and switched from having both SPGs and transmitters to just transmitters. The extra line entanglement from either running the transmitters up top (which I didn't like because they stuck up weirdly above the reg/tank when transporting) or running the SPGs on top wasn't worth it along with the extra o-rings as potential failure points. If one of my transmitters cuts out, I'll just thumb the dive and exit like normal, no big deal. I keep an extra SPG on a short hose in my save a dive kit as a backup, so I can do a subsequent dive without issues.
I've seen and used button gauges full of water, and give inaccurate readings. Using one on you last decompression tank shouldn't be a problem.curious
why are button gauges a liability when regular SPGs are acceptable?
In cave diving an SPG is mandatory.
Two of the very best cave divers/instructors/explorers that I have ever met use transmitters instead of SPGs. So apparently its not mandatory to use SPGs, unless you meant to say 'SPGs or transmitters'. I.E. some kind of instrument that tells you how much gas you have.
I'm sure at some point in the aviation world there were all kinds of discussions about replacing mechanical instruments with electronic ones, and resistance to that transition. Maybe there still is, I really don't know.