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Additional Oxygen Cell supply for Inspiration CCR
Due to interruptions in oxygen cell supply this year, AP Diving has taken steps to secure a second supplier. The cell from the new supplier, the same supplier as the Narked @ 90 cell, will have the designation APD16 and has a white label.
The cell from the new supplier (left) will have the designation APD16 and has a white label. Supplied by AP Diving The cell from the new supplier (left) will have the designation APD16 and has a white label.
Accuracy of cells
While the Narked @ 90 cell and the APD16 cell are very stable they have an unfortunate trait in that once the Inspiration scrubber warms up from top to bottom, which is 15 to 20 mins after the start of the dive, the cells read 0.05 bar higher than the actual PO2 i.e. while the cells display 1.30 bar ( the setpoint) - the actual PO2, measured on a calibrated fast response external analyser, is in fact 1.25 bar.
Although undesirable, this trait is repeatable and reliable and so is easily compensated for.. simply by reducing the High Gradient factor slightly.
Follow the link below to see the full explanation