Quote: (Originally Posted by
Gill Envy)

Relying entirely on a setp point controller or entirely on a HUD and manual injection are both high risk scenarios, IMHO.
g
Thanks for the offer. Sounds like we will see a HUD put against a mask in mud soon....
You are right about above statement, but we are talking about an extreme situation here. Once you clear the zero vis silt out, one would go back to relying on the normal operating options to verify PO2.