Mailing List Archive

Mailing List: techdiver

Message Display

David,


>I hot fill, O2 first, Helium then air.  By hot fill I mean add the O2
>slowly, then the Helium at a moderate rate.  Two quick blasts of air to
>"swirl" the gas and moderate fill rate for the rest of the air.  I over
pump
>each of the gasses by 10% to allow for cooling and compressibility.

>Often I remix and use a booster.

When I read this I was surprised. Why don't you mix in the helium first
and the O2 second? Adding the O2 second allows the gauge to be in its'
most linear range (hence most accurate) for the O2 addition. The helium 
when added first does not need to be as precise as the O2. 

I think we all agree to add air last......

Do you use the same procedure when starting with drained tanks?

Steve
--
Send mail for the `techdiver' mailing list to `techdiver@aquanaut.com'.
Send subscribe/unsubscribe requests to `techdiver-request@aquanaut.com'.

Navigate by Author: [Previous] [Next] [Author Search Index]
Navigate by Subject: [Previous] [Next] [Subject Search Index]

[Send Reply] [Send Message with New Topic]

[Search Selection] [Mailing List Home] [Home]