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divetheworld · 23rd March 2008, 11:40

Quote: (Originally Posted by sailor)

I´m using the original 2nd generation Draeger diaphragm 1st stage for the O2 addition with an increased fixed IP of 19 bar.
This is due to the sonic constant flow jet providing 0,8 Ltr. of O2 per minute inside the Hydrogom valve.
That is mathematically good for 90 mtrs. / 300 ft and that´s where i went with the unit already without any issue.

Are you using a special orifice?
The hydrogom I had from Jeroen runs a 0.009mm orifice.

0.8ltr/min flow on a 0.009 orifice means an IP of 13.9 (rounded).
At 19 bar (assuming no IP creep that is designed into the Draeger valves) means a flow of a nads over 1ltr/min.
To get a flow of 0.8 from an IP of 19 bar you need a 0.0077mm orifice.

Brent

23rd March 2008, 11:40	#10 (permalink)
divetheworld Dive porn pimp Current Rebreather/s: Inspiration Classic Other CCR Other Rebreather/s: Not Bought Yet Inspiration Classic Inspiration Vision Classic Kiss Other CCR Join Date: Mar 2005 Location: Leeds, England Posts: 1,585	Re: Drager CCR vs. Other Rebreathers Quote: (Originally Posted by sailor) I´m using the original 2nd generation Draeger diaphragm 1st stage for the O2 addition with an increased fixed IP of 19 bar. This is due to the sonic constant flow jet providing 0,8 Ltr. of O2 per minute inside the Hydrogom valve. That is mathematically good for 90 mtrs. / 300 ft and that´s where i went with the unit already without any issue. Are you using a special orifice? The hydrogom I had from Jeroen runs a 0.009mm orifice. 0.8ltr/min flow on a 0.009 orifice means an IP of 13.9 (rounded). At 19 bar (assuming no IP creep that is designed into the Draeger valves) means a flow of a nads over 1ltr/min. To get a flow of 0.8 from an IP of 19 bar you need a 0.0077mm orifice. Brent __________________ Attitude and self praise is no reccomendation. Dont try to be a great man, just be a man and let history be the judge of you. CHECK OUT OUR INTERWEBS FOR CUSTOM REBREATHER UPGRADES *WWW.NARKEDAT90.CO.UK* *http://www.grpservices.com/pursuit/* Supporting Shearwater Research Products in Europe Last edited by divetheworld : 23rd March 2008 at 12:56.
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