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Manos
>1. Should i always use a separate small tank ( 2-3 liters ) for filling
>my suit ?
No, a separate tank is only really required for Helium based gasses.
However, if you do need one a 1-2 litres is fine, 3 litres is too big. I can
get 4-6 dives out of a 2 litre cylinder which is dependent on depth. Don't
forget to allow a reserve for wing failure as extra gas is needed in the
suit.
>I dont think Argon is a must , the
>lower it can get here is 15c.
Argon is required to avoid having to fill your suit from your Trimix back
gas. However, I will use it in colder water 4-6 deg C even if diving Nitrox.
For shallow Trimixes, e.g. a 40m Trimix, in 15 deg C, I would not bother with
argon, for wreck diving. The greater the Helium content, the more
significant is the increased heat loss. Anyone that claims otherwise is
talking with the benefit of sitting in an arm chair.
>2. If the answer is yes you can use the gas from your main tanks (
>remember im mostly diving nitrox )
> then at which post should i attach the suit hose ?
You can use your Nitrox back gas and it should feed the dry suit from the
left post.
>3. What is the Dir position of the Dry suit Tank ? ( eg. between main
>tanks , attached on hard plate )
Left side attached with bands of some description so that the cylinder can be
removed in the event of being key holed. Halcyon make some, or you can adapt
a cam band arrangement yourself. The reason for the LHS is that this allows
a "standard" cylinder valve to be used with the on/off valve to the outside
of the cylinder, and cylinder inverted. The first stage then faces forwards,
or angled slightly inwards. Don't forget that you'll need an overpressure
valve on your first stage to handle the eventuality of a first stage failure.
As you are mostly diving Nitrox, I would get used to your suit first before
adding argon bottles, etc. Only carry what you need.
David Shimell
shimell@se*.co* <mailto:shimell@se*.co*>
DDI: 01932 814096 * Mobile: 07770 282 202 * Fax: 01932 814343
Project Manager, IBM UK Web Server Division, Sequent Computer Systems Ltd,
Weybridge Business Park, Addlestone Road, Weybridge, Surrey, KT15 2UF, UK
registered in England and Wales under company number: 1999363, registered
office as above
-----Original Message-----
From: Manos Manoli [SMTP:manos@ma*.co*.cy*]
Sent: Wednesday, March 22, 2000 7:10 AM
To: Tech Diver
Subject: DIR DRY
So i need some help here on Diving Dry , ( i have my TLS350 on the way
remember ).
I intend to have a day long or two course but im sure they will not be
able to answer some of my questions.
Is there any web side that spreads some light on my questions ?
1. Should i always use a separate small tank ( 2-3 liters ) for filling
my suit ? or is this depending
on the profile of my dive ? I dont think Argon is a must , the
lower it can get here is 15c.
2. If the answer is yes you can use the gas from your main tanks (
remember im mostly diving nitrox )
then at which post should i attach the suit hose ?
3. What is the Dir position of the Dry suit Tank ? ( eg. between main
tanks , attached on hard plate )
Rgds Manos
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