Easy MOD and Best Mix Calculator 👉 circlehscuba.com/nitrox-calculators/ How to Analyze a Nitrox Cylinder ▶ ru-vid.com/video/%D0%B2%D0%B8%D0%B4%D0%B5%D0%BE-4Jx-L4pV_Gg.html
Teach students to go metric all the way. Makes quick calculations under water (e.g. in case of lost gas and replacement is offered) a lot easier than introduce that 33 in the equations. You're using the (metric) ATA anyway.
Nice breakdown on working through the Nitrox formulas. I truly believe that we all need to know how the math works and how to do the math for each dive/tank. Explanations like this help us all. Thanks
Thanks, I’m glad you found it useful. I was a bit hesitant to post a long video on math, haha, but I think it’s important and when someone needs to know how, it’ll be here for them!
@@CircleHScuba while it’s likely that this video will not appeal to all your viewers, I am sure that there are many who will watch it and learn from it. We need a balance of content, both the fun (Mr Beasts cars) and more technical (like this) to become better divers. You are doing a great job at educating the public, both divers and non-divers alike, and creating valuable content while doing it. I can honestly say that I have gained more knowledge from your videos than I did from my AOW instructors. For that i greatly appreciate you sharing your experience and knowledge.
Thanks so much Daniel. I definitely agree a balance is needed, though I will probably stick to the educational side. My goals for the content are fairly straightforward I think. As a diver, from signing up for open water to now as I work toward becoming a tech instructor, I’ve had questions that I can’t easily find answers to online. OR, the answers I find are from old blog posts, forums, books, etc. and not as convenient for me, OR just finding a single opinion versus a multitude of answers and opinions. So I simply am hoping to build a library of content to answer questions I’ve had that I know others have too, and hopefully in a way that is easy to understand and relatable to everyone.
So I have a question how do you keep the perfect seal with your mustache and beard because during my recreational dives, I kept having an issue where water would seep in through the bottom of my nose where my mustache is or goatee and I would have to use Vaseline to counter that is there something other than I can do?
That’s the trick everyone does. I am lucky I guess with my mask fit because I don’t ever have to, but it’s very common for those with mustaches to have to put Vaseline on it
When i was doing my NitrOx course i flipped this formula around to make it more easy.... You can say PpO2*100/%O2 = depth-10 Assume that your ppO2 is a constant of 1,4 for conservative reasons, you get 1400 and the math will be easy. The value of your O2 is in percentage. Saves a lot of calculation errors😉
👍😎🇵🇭🤿! Good refreshing video! I feel that you have a great way of explaining this! Much better than my original certification. I know that you had a hard time compressing this in a short time! Great job 👍!!!!!
I think if you need formulas or some memory helpers, you didn't understand how things work. When you do you will not need to memorize stuff, everything is obvious.
@@CircleHScuba if you have 2 rocks and I give you another 2, you will not think about the formula for calculating total amount of rocks, you know you have to add 2+2, you understand what you are doing, its obvious. That's what I was trying to say.
@ee02108 I think this is a bit more complicated. Not many can do multi decimal point division and multiplication in their head and having a base idea of what to do (which to multiple or divide) is literally what a formula is. Knowing to take ppo2 and divide by the fractional gas percent for example to then get pressure and convert that to a depth. You have to know what gets you to the answer and it’s not second nature for a gigantic majority. To think otherwise is a bit too much in my opinion. I hear you, with time you can easily remember what to do, but that’s saying you remember what to multiply by what or what to divide by what. Which is a formula 😅
@CircleHScuba I'm not saying to divide by head the numbers, I'm saying knowing what to divide, that should be clear, not because you remember the formula but because you understand the concept. Like you have a cake for 4 people, how many cake each one will have? You know you have to divide 1 by 4 and I hope it's not because you remember a formula. That's how my engineer brain see things.
Unless you're tech diving with custom gas blends, there's no reason to know any formulas when using Nitrox. At least in Asia, where I dive, for recreational dives, all you'll get are EAN32 or EAN36; and all one needs to know are the 33m and 29m MODs respectively.
Let’s try this as an example: let’s say I visit your area and don’t have those two memorized, wouldn’t you think it’s important to know how to look it up or calculate it at the least 😅 Memorizing something isn’t knowing something, and this video is to teach people the why behind the numbers and how to figure it out. It’s important for planning, it’s important to know generally rather than blindly reading a table or computer without knowing the why behind it, and then for the last one it’s “best mix” which is useful all over the world. Your local area may not offer custom mixed but to say that there’s no reason is kind of crazy to me 😅
You couldn't be more wrong.... Whilst I can't argue that there may be less need for where you dive. Over here in the UK, we rarely use "Banked" standard Nx mixes. It is far more common for partial pressure blending to be used. And whilst we have very good blenders who can consistently hit the requested Nx mix. There are times where we, as divers, will get Nx3n as a first fill. Then depending on where we are, or what we're doing for our next dive we will simply top up the cylinder with air without draining the cylinder (to make it a little cheaper or dive boat logistics mean it is impractical). We can then use math to work out what the Nx mix in our tank will be to see if it will be suitable for the next planned dive. If not, we may need to let more gas out before we fill to ensure we have a suitable mix. (We would also check once filled using an analyser for confirmation.) We then use the additional math to label the tank with an appropriate MOD. But "custom blends" are far from a tech dive thing. A cylinder of Nx32 breathed down to 100bar, topped back up to 230bar with Nx21 will result in roughly Nx26, which when breathed down to 100bar and then topped back up to 230bar with Nx21 will result in a cylinder with roughly Nx23 in it. Three Nx dives from one cylinder originally filled with Nx32...
@CircleHScuba MOD is max. So that is a 1.6.. when labeling bottles and such. However it's fine to use 1.1/1.2/1.3/1.4 for the working part if you wish. But planning I would stick to 1.6 = MOD = MAX. SO, I really love the video and so very glad you did this. I've actually sent this to my friends and some students. Keep it up. I would mention in this that the 33 if for salt and 34feet is for Fresh. kind of matters for some of us if we dive both.
