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I have been diving with a Teric for a while and am now trying the Descent Mk2i. My biggest complaint is that the customisation options on the Garmin dive screens are very limited in some ways compared to Teric. The main dive screen is not very customisable and offers 3 lines with 4 fields...

Hi guys, I am trying a Mk2i and have dived with my Teric normally, so I am trying to configure the screen with the following data: Temp GTR - Gas time remaining Pressure Then of course NDL, dive time, O2 %, depth The primary screen on the Mk2i doesnt allow too much config, it will give me a...

I think that the Scubapro calcs precede EN13319 ?? Not sure though, but here is the fresh water side of the calc: 10.3 metres per atmosphere 1010 mbars at sea level (same as above) 10.19802 metres per bar PPO2 FO2 PAbs PAbs minus Surf P MOD (calc) MOD(G2) 1.4...

I think I may have worked it out: Sea level mbar: 1010 33 feet of sea water per atm and 3.28083 feet per metres gives us 10.05843 msw per atm and this gives us 9.95884 metres per bar of pressure Altitude in bars at C1 (as per Scubapro manual) is 0.905 bar PpO2 FO2 PAbs PAbs minus surf...

Indeed true. I mentioned it because I was also under the impression that 10m=1 atm. SP says nothing in The manual other Than that 10msw corresponds to approximately 10.3m fresh water.

I’ve been looking for the definition in the SI units and 10msw is defined as 1 bar (not 1 atm) according to the US navy diving manual and to Wikipedia.

Thanks for your input, inquisit. Well taken. I am using salt water just to make the values easier (10m = 1 bar). Yes, I know it doesnt make sense to dive salt water at altitude. This isnt a diving question but maths. Just had another thought. Today the surface pressure is different but the...

You’re quite right in that atm(not mb) should be used. However, 0.844 makes my calculation worse. If I use that on the 22% I work back to an FO2 of 22.2%

Johannesburg, South Africa. We’re pretty high here.

Aha. That 20.7% now explains a bit. That is what I backward calculated. Only question now remains why when the barometric pressure was reading 855 millibars (as per the G2) It appeared to use 920 millibars. also, why 20.7%?

Guys, I am merely trying to understand their formula. This isn't about the tolerance to oxygen toxicity or a debate on the salinity of the oceans, purely a question about: how do they calculate it? Shearwater - works out perfectly. Simple calculation. Suunto i can work out (one may or may...

I have seen Suunto. They take your oxygen reading and simply add 1% to it and then calculate the MOD. From experience (my Suunto is at home and I am at the office), it works out perfectly if you just add the 1%. I once Googled it and they do that for safety to bring your MOD down - they...

The G2 works on 10m of salt water to 1 bar pressure (stated in the manual). The conversion is based on what the G2 reads at the surface (since it gives a pressure in millibars).

Yes, indeed, it is all a bit arbitrary and doesnt make much difference in any real world scenario, but I am trying to figure out the calculation they use and the variables. All my other computers calculate exactly, so it is purely a mathematical curiosity.

Hi guys, Does anyone know why there is a bit of an anomaly in calculating the MOD at 21% with SP computers. Mathematically, all the way from 22% upwards, the calculation works But only if I use a surface P of 0.92 - problem is that the computer is giving me a pressure of 0.855 bars. to get...

DGX has one with a 1/4" NPT thread DGX Adapter: 1/4-Inch NPT Male = BC Inflator QD Post | Dive Gear Express® Truthfully though, they also do a complete unit for $25 Deluxe IP Gauge (PSI and BAR) | Dive Gear Express® which is a good thing because it features a pressure relief and also a blow...

It really isn’t a fantastic every day watch: Big and quite heavy Doesn’t have an ambient light sensor so doesn’t auto dim/brighten. No accelerometer, so the display is on all the time. Doesn’t know when you have picked up your watch to read it. Very limited range of watch faces.

I have sent them a couple and the only thing I can think of is: More watch faces. Lots of people requesting this Co,pass could be made to look and feel like a compass plus show depth on compass screen. Great for navigating.

Oh that "stubborn one" I mentioned, I indexed the seat, then changed the piston, then the seat (I had just fitted a brand new seat), then re-greased, then de-greased and eventually a new o-ring did the trick. Having said that, I have also had it where a simple seat rotation fixed it.

Ahh, The honking Mk25. A real plague. There are countless theories and fixes out there. Scubapro locally taught me to take the seat and rotate it by 90 degrees to see if it helps. I have had success with this in the past. They also tell me that it could be a slightly dry piston. One of my...