Ok looking through the CE standards here is what I see
there is actually a table of various ventilation rates, tidal volumes ect..
there are various levels of inspired co2 that must be tested these are
0.4, 0.9, 1.6, 2.5 and 3.0, the ventilation rate varies from 10lpm to 75lpm depending on the test, the 1.6 rate requires 40lpm rate(and an oxygen consumprion rate of 1.70lpm).
the test must be done at 4 degrees c, (it appears the co2 measurement is done under the general testing conditions - although not explicitly stated, I would like this clarified) for nitrogen/oxygen mixtures done at 5 bar while helium/oxygen tests must be run at 11bar
the official endurance is rated using the 1.6 lmp figure, and time has to be recorded when pco2 reaches 5mbar and 10mbar
there is actually a table of various ventilation rates, tidal volumes ect..
there are various levels of inspired co2 that must be tested these are
0.4, 0.9, 1.6, 2.5 and 3.0, the ventilation rate varies from 10lpm to 75lpm depending on the test, the 1.6 rate requires 40lpm rate(and an oxygen consumprion rate of 1.70lpm).
the test must be done at 4 degrees c, (it appears the co2 measurement is done under the general testing conditions - although not explicitly stated, I would like this clarified) for nitrogen/oxygen mixtures done at 5 bar while helium/oxygen tests must be run at 11bar
the official endurance is rated using the 1.6 lmp figure, and time has to be recorded when pco2 reaches 5mbar and 10mbar