Fennec123
Member
- Nov 26, 2022
- 55
Hi all, my first post here.
I've been suicidal for the past year or so.... and around that time I bought the kit i needed to CTB with Nitrogen and an Exit bag.
I somehow managed to work through my extreme mental pain and ended up "getting distracted with life"... but here i am, another year later.... and some terrible stuff has happened which has just pushed me toward using the kit i should have used a year ago.
I've done a LOT of reading as you can probably imagine, but i have a few questions that I need to get straight in my head, so any help with these would be massively appreciated. I thought I'd put this all in one single post so I don't spam the board, but it means this post will be a big long. Sorry!
First question: I'm getting confused trying to calculate how many minutes of Nitrogen at 15 LPM I have. I've seen various calculations and stuff like this but it just confuses me even more!
the specs of the tank i bought are:
Second question: As well as a Nitrogen regulator, I also bought this flow meter (which is for Argon, but im assuming it'll work the same for Nitrogen!?) and I just wanted to get the mechanics of the vavles and flow clear in my head ready for the day. I'm thinking it should go like this:
A day or so before:
If that's done correctly, in theory, all I need to do on the final day, is just open the tank valve enough so that enough gas is coming our right? (i dont need to worry about opening it ALL the way, but I should open it enough so that the correct bar pressure and flow rate is showing right?) and I won't need to touch the other valves again.
Third question: I bought welding hose, which I think is a big heavier and stiffer than the plastic tubing i've seen in other examples. Do you think this might cause any issues with weighing the bag down once it's on? I was maybe thinking of using duct tape instead of Micropore because of this.... (also why is Micropore recommended instead of other tapes? I thought Micropore wasn't very sticky?)
Fourth question: When I first got the tank, i opened the valve for about 0.5 seconds to clear any debris from the valve... do you think that would have emptied a significant amount of gas? I've never dealt with compressed gas before so I have no idea if it was an insignificant amount or a huge amount! It sounded very loud and scared me a little!
Fifth question: I've seen conflicting info on the shelf life of Nitrogen.. some say 1-3 years... some say almost indefinitely! I've had my tank for about just over a year now... i'm assuming that's nothing to worry about? (i'm confident the valve was securely closed). But how can you check how much is actually left? Is that just done by looking at the pressure on the regulator?
I think that's my main questions. I'm assuming the gas is as pure as they said it was. I don't really have any reason to doubt them. I think I'm okay when it comes to the exit bag and how i should position myself etc....
Many thanks in advance, and I hope i didn't break any rules including those links?
A simplified diagram of my setup
I've been suicidal for the past year or so.... and around that time I bought the kit i needed to CTB with Nitrogen and an Exit bag.
I somehow managed to work through my extreme mental pain and ended up "getting distracted with life"... but here i am, another year later.... and some terrible stuff has happened which has just pushed me toward using the kit i should have used a year ago.
I've done a LOT of reading as you can probably imagine, but i have a few questions that I need to get straight in my head, so any help with these would be massively appreciated. I thought I'd put this all in one single post so I don't spam the board, but it means this post will be a big long. Sorry!
First question: I'm getting confused trying to calculate how many minutes of Nitrogen at 15 LPM I have. I've seen various calculations and stuff like this but it just confuses me even more!
the specs of the tank i bought are:
- Research nitrogen 6.0
- 5 litres
- Impurities [ppm] – purity =99.9999%
- Typical filling pressure 15°C: 200 bar
- capacity 1.013 bar, 15°C, [kg/m³]: 1.185
Second question: As well as a Nitrogen regulator, I also bought this flow meter (which is for Argon, but im assuming it'll work the same for Nitrogen!?) and I just wanted to get the mechanics of the vavles and flow clear in my head ready for the day. I'm thinking it should go like this:
A day or so before:
- Ensure regulator valve is closed (which means the handle should be loose right? not tight.... this confused me at first because i assumed "tight = firmly closed, like a tap".
- Screw the regulator to the tank (firm but not crazy tight)
- Screw flow meter to regulator (again tight, but not overtight)
- Open the tank valve and check the input pressure (I'm not sure what this should be?)
- Adjust the output valve so it's outputting 2.5bar (that's what my flow meter says it operates at)
- Open the Flow meter until it's showing 15 LPM
If that's done correctly, in theory, all I need to do on the final day, is just open the tank valve enough so that enough gas is coming our right? (i dont need to worry about opening it ALL the way, but I should open it enough so that the correct bar pressure and flow rate is showing right?) and I won't need to touch the other valves again.
Third question: I bought welding hose, which I think is a big heavier and stiffer than the plastic tubing i've seen in other examples. Do you think this might cause any issues with weighing the bag down once it's on? I was maybe thinking of using duct tape instead of Micropore because of this.... (also why is Micropore recommended instead of other tapes? I thought Micropore wasn't very sticky?)
Fourth question: When I first got the tank, i opened the valve for about 0.5 seconds to clear any debris from the valve... do you think that would have emptied a significant amount of gas? I've never dealt with compressed gas before so I have no idea if it was an insignificant amount or a huge amount! It sounded very loud and scared me a little!
Fifth question: I've seen conflicting info on the shelf life of Nitrogen.. some say 1-3 years... some say almost indefinitely! I've had my tank for about just over a year now... i'm assuming that's nothing to worry about? (i'm confident the valve was securely closed). But how can you check how much is actually left? Is that just done by looking at the pressure on the regulator?
I think that's my main questions. I'm assuming the gas is as pure as they said it was. I don't really have any reason to doubt them. I think I'm okay when it comes to the exit bag and how i should position myself etc....
Many thanks in advance, and I hope i didn't break any rules including those links?
A simplified diagram of my setup
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