Stephane

I think that the Aquatek Voyager is CE approved in the SCR version.

This is what EN14143 states regarding the PpO2:
«The apparatus shall under all conditions of use specified by the manufacturer automatically maintain an inspired partial pressure of oxygen greater than 0,20 bar. The inspired partial pressure of oxygen shall remain within the limits specified by the manufacturer. The inspired partial pressure of oxygen shall also be maintained at a partial pressure of less than or equal to 1,6 bar; except during the descent phase(s) of a dive for a period not greater than 1 min where it may increase to a maximum of 2,0 bar. In the event of a failure of the automatic system provision may be made for the addition of respirable gas by the diver. If fitted this shall also be able to satisfy the inspired partial pressure of oxygen requirements of this clause. Testing shall be done in accordance with 6.2, 6.7 and 6.15.»

How can this be done in a KISS system?

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Stéphane