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Terry · 18th April 2006, 18:00

When doing a diluent flush at depth, for whatever reason, lets say to check the sensors for sanity - how do you keep the O2 from autoinjecting and screwing the whole thing up?

I know there is about 6 seconds between injection cycles, but it may take you more than 6 seconds to perform the whole operation and get a reading, by that time the sensors have noticed a drop in PO2 below the setpoint (1.3) and have begun to squirt O2 back in.

Do you switch to the low setpoint? Wouldn't that set off the alarms?

18th April 2006, 18:00	#1 (permalink)
Terry New Member Current Rebreather/s: Inspiration Vision Other CCR Other Rebreather/s: Inspiration Vision Other CCR Join Date: Mar 2006 Location: Atlanta Posts: 92	Diluent Flush & O2 autoinject When doing a diluent flush at depth, for whatever reason, lets say to check the sensors for sanity - how do you keep the O2 from autoinjecting and screwing the whole thing up? I know there is about 6 seconds between injection cycles, but it may take you more than 6 seconds to perform the whole operation and get a reading, by that time the sensors have noticed a drop in PO2 below the setpoint (1.3) and have begun to squirt O2 back in. Do you switch to the low setpoint? Wouldn't that set off the alarms?
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