Technical and Scuba Diving Dive Gas Blending App for Nitrox and Trimix | iMixer by Arcinsight Solutions

 

Technical Diving Scuba App for Blending Nitrox & Trimix

 

 

 

 

 

 

 

Scuba Gas Blending App for blending Nitrox and Trimix for Technical Diving

Nitrox and Trimix Dive Gas Blending App for Technical Scuba Diving

Dive Gas Blending App for blending Nitrox and Trimix for Scuba Diving

EANx Technical Scuba Diving App for blending Nitrox and Trimix

Scuba Diving App for Dive Gas Blending of Nitrox and Trimix for Technical Diving

Technical Diving Gas Blending App for blending Nitrox and Trimix for Scuba Diving

 

 

 

Best Technical Dive Gas Blending App for Nitrox and Trimix - iMixer

 

 

 

 

 

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iMixer Tutorial

 

Blending Trimix 26/17 (Helitrox) with EAN 32:

Suppose you are trying to mix a cylinder of 26/17 using EAN 32 as your top off gas. You have heard others say that you can make 26/17 by topping about 500 PSI of Helium to 3000 PSI with EAN 32; but what is the exact mixing plan?

 

You start by entering your starting mix (in this case an empty cylinder of Air – 15 PSI of 21/0), target mix (3000 PSI of 26/17), and your top off gas of EAN 32 (FO2 = 32, FHe = 0). When you press the Calculate button you get the message:

 

Warning

Unable to create blending plan with

current top off gas.

 

You get this message when it is mathematically not possible to create an exact blending plan. In this case you can get very close to 3000 PSI 26/17 but it is not exactly 26/17. What can you do?

 

In this case, switch Top Off Mix “on” and enter the mix parameters manually. Start with 500 PSI of Helium (FO2 is 0%, FHe is 100%), enter your target pressure of 3000 PSI (ignoring the FO2 and FHe values), and set your top off gas to EAN 32. When you press Calculate, iMixer adds EAN 32 to your cylinder to 3000 PSI and displays the resulting mix. In this case, you get a cylinder of gas that is 26.7% Oxygen and 16.7% Helium: pretty close to 26/17.

 

If this is not close enough we can try again. To get the Helium exact, we know that 17% x 3000 PSI is 510 PSI. Change the Starting Mix to 510 PSI of 100% Helium and re-calculate. The result of this top off is a mix that is 26.6% Oxygen and 17% Helium.

 

Is this mix close enough to 26/17 for you? You decide. Keep in mind the MOD of the gas has been reduced to 141 FSW (from 145FSW) because of the slightly increased fraction of Oxygen in the mix.

 

Correcting a mistake

You are blending a cylinder of 16/40 for a customer and you find the final analysis is off by a significant amount. In this example, suppose you end up with a cylinder of 17/45 at 3100 PSI. How do we correct this blending error?

 

Set your Starting Mix to 3100 PSI of 17/45, your Target Mix to 3000 PSI of 16/40, Top Off Gas to the appropriate value (in this case Air), and press Calculate.

 

To correct your blending error, you must bleed the tank down to 1871 PSI, add another 358 PSI of Helium, and top off with Air to 3000. Since you are adding Helium to a tank already at a high pressure, you may require a booster to complete this mix.

 

What did it cost to fix this mistake? Using the default set of cost values supplied with iMixer, if you are filling an Aluminum 80 cylinder, your shop cost is $7.23 to make this correction ($14.47 if you are filling doubles).

 

Using a Bank Mix - Blending Trimix 26/17 (Helitrox) with EAN 50 and Air:

Suppose you are trying to mix a cylinder of 26/17 using Air as your top off gas with EAN 50 in your Nitrox bank.  As before you start by entering your starting mix (in this case an empty cylinder of Air – 15 PSI of 21/0), target mix (3000 PSI of 26/17), set your top off gas to Air (FO2 = 21, FHe = 0), and your bank mix to EAN 50 (FO2 = 50, FHe = 0).

 

With the Use Bank Mix switch set to “off” pressing the Calculate button gives you the following plan:

 

- Add O2 to PSI:           340

- Analyze O2/He:           96.5 / 0.0

- Add He to PSI:            850

- Analyze O2/He:           38.6 / 60.0

- Add 21/0 to PSI:         3000

- Analyze O2/He:           26.0 / 17.0

 

When you set Use Bank Mix switch to “on” the plan recalculates:

 

- Add 50/0 to PSI:         902

- Analyze O2/He:           49.5 / 0.0

- Add He to PSI:            1412

- Analyze O2/He:           31.6 / 36.1

- Add 21/0 to PSI:         3000

- Analyze O2/He:           26.0 / 17.0

 

In this case you can blend 26/17 without having to use 100% O2.

 

Best Trimix Gas Blending and Dive Gas Blending App for Technical Scuba Diving - Calculation of EANx (Nitrox & Trimix) gas blends

 

Best Trimix Gas Blending Technical Diving App for calculating Dive Gas Blending of Nitrox & Trimix

Blending Trimix 26/17

 

 

Favorite Scuba & Technical Diving App for Blending Nitrox & Trimix

Correcting a mistake

 

 

Technical Diving Scuba Apps for calculating Nitrox & Trimix Dive Gas Blending

Correcting a mistake

 

 

Nitrox and Trimix Gas Blending App for Scuba Diving and Technical Diving

Blending without using the bank mix

 

 

iMixer is best App for calculating Dive Gas Blending of Nitrox & Trimix for Technical Diving and Scuba Diving

Using EAN 50 from the bank

 

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