The ZX, Flathead-XP
Yoke shown, also available with DIN connection
350-3110 (Yoke) 350-3121 (DIN with Yoke converter)
Note: Tests are done at as close to the accepted definition of Heavy “Work of Breathing” (WOB) as possible. The definition of heavy WOB is 62.5 LPM (Liters Per Minute) total volume produced by a tidal volume of 2.5 liters and a breathing rate of 25 BPM (Breaths Per Minute), or in other words 25 BPM X 2.5 LPM = 62.5 WOB. The ANSTI testing machine is locked to produce a constant tidal volume of 2.5 liters, but as the test progresses, changes in the regulator’s resistance to breathing will cause the breathing rate to fluctuate slightly anywhere between 24.89 and 25.21 Breaths Per Minute. That is why you might notice that every test shows a slightly different WOB because of this slight fluctuation in the actual rate of breathing.
Note: The chart shown above was commissioned by Rodale’s Scuba Diving Magazine for an article rating several different Scuba makes and models including Zeagle. The charts were produced by software created by the maker of the ANSTI test machine that was used. Scuba Labs, Inc. performed the tests for Rodale’s at their facility. Zeagle Systems, Inc. did not have any input in the testing process or the printed results. Because the regulators were tested in a large pressurized water filled vessel, the room temperature did not affect the tests and the room temperature transducer was not connected to the computer. That is why the room temperature is listed as 0º F on the chart.