Not accurate enough for my liking, prob ok for deco bottles but wouldnt want to use them where more precise readings are needed such as bottom stages
my 2c
I really dont find the hose to be that much of an issue. those litle 6inch milflex hp hoses look pretty good, havnt used one myself yet
There are a few posts here that demonstrate an inability to plan dives. There is no need to look at a bottom stage SPG on a dive (different on a cave dive where the cylinder is NOT a bottom stage, it is a staged cylinder). LEARN your cylinders. LEARN how long they last at certain depths.
All you need to do is analyse and confirm starting gas pressure prior to jumping in the water. 220 bar. in an 11L bottom stage, at 70m that is 18mins for me. Don't look at the SPG. When it sucks dead, switch to BG. I want to get as much gas out of my bottom stage as possible, which means I'm going to empty it. Why they heck would I worry about looking at the SPG on the dive ?
Same with deco cylinders. Why do you need to check the SPG ? You should know that you have enough gas for your planned deco (and 1.5 times for reserve ) before you jump in the water. Again, no need to check the SPG during the deco (there is when you deploy the hose though), as you know you have enough gas for it.
For a cave dive, if you're using half +15, then you basically hit around 120bar on the stage, drop it and pick it up on the way home. +/-5-10bar isn't going to be an issue (especially given that if you are using stages, you have redundancy in the back gas anyway).
Learn your dive time and depth, you can approximate tank pressures from known use. SPGs are only an AID to an effective dive plan.... but I am sure that you would have covered all this on your TDI seal-team bubble blower trimix program huh ? (fire in the hole... ).
PH, can you tell me from your real world trimix diving experience your thoughts on the above ? (more stirring on this forum than an episode of My Kitchen Rules)
