Recent Updates and Revisions

The following updates have been made recently:

	PPO2 Accuracy report (1.3 MB), 08.03.2010 Verification Report on the accuracy of the oxygen readings, including the sensor compensation, used in the Open Revolution rebreathers, and operation of the active warning devices.
	Oxygen Sensor Fusion Algorithm (2.7 MB), 13.02.2010 Verification Report on the oxygen sensor fusion algorithm used in the Open Revolution rebreathers, using EN 61508 processes.
	Exploded Drawings,12.02.2010 Full set of exploded drawings for the family of Open Revolution rebreathers
	Respiratory performance of ALVBOV in Open Circuit mode (0.5 MB), 08.02.2010 EN 250 respiratory performance measurements of the ALVBOV with Apeks and Apollo first stage regulators, and comparison with the Apeks TX100 as the industry performance benchmark. European limit for WOB is 2.5J/L in EN 250:2000, and 3J/L in Appendix A1:2006. Measured WOB for the ALVBOV is 0.89 J/L, similar to the benchmark.
	Pressure Gauge Maximum Depth Test (0.2 MB), 08.02.2010 EN 250 approval of pressure gauges covers their use only to depths of 50m. All Open Revolution rebreathers use Megasport pressure gauges where an analogue gauge is required. This report describes the test of Megasport gauges and their rating for use to 550m.
	Hydrostatic imbalance of Deep Life Open Revolution Rebreathers: compliance assessment to EN 14143, NORSOK U101, NATO STANAG 1410 and NEDU TA05-12 requirements (3.4 MB), 19.11.2009 Full test using production samples to design documentation revision in Bill Of Materials D3. Format and procedure follows that of hydrostatic tests on previous versions of these products, but with complete retest.
	Breathable Volume of O.R. Umbilical, Incursion and Apocalypse Rebreathers (1.1 MB), 19.11.2009 Reports key test results, to ensure the breathing volume is accessible by the diver in all positions, and is sufficient. September 2009.
	Accident Database and Reviews updated to 20th Feruary 2010, with analysis (256 MB), 21.02.2010, The pubic extract of the Comprehensive Database of Rebreather Fatal Accidents and analysis, of 176 confirmed sports rebreather fatal accidents. Manufacturers can use this data to improve designs, instructors can use it to improve training, and divers can learn from it too. This list deviates from previous practice in that it contains names of all divers where these are in the public domain, to enable the accuracy of the list to be verified more easily. Two items corrected, in Issue B.