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Date: Wed, 1 Aug 2001 23:25:32 +0000
From: "Aldo Solari [APS]" <aldo.solari@ho*.se*>
Organization: Fisheries Research Group. U. of Las Palmas
To: "techdiver@aquanaut.com" <techdiver@aquanaut.com>
Subject: venturi-effect/bottle-presure/TX20/questions

TX20s & TX40s:

Dear all, is there any negative relationship between

     venturi effect (the amount of gas injected into
                     the mouth once the 2nd stage is
                     cracked during inhalation)

and

     inhalation effort ?

I  have  noticed that venturi effect in the TX20 becomes "weaker"
as  pressure  drops  in the bottle. I am talking about noticeable
changes between, say, 200 bar and 100 bar.

The  regs  are  still  extremely good to breathe but you can feel
pressure  drops  in the bottle.

Is there any way I can have the TX20s regulated to avoid this ?
Any further comments would be mostly appreciated.

Cheers,

----
aldo.solari@ho*.se* (fisheries biologist)
Home page, www.ccbb.ulpgc.es/fish-ecology/solaris
----


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