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The 10k resistor splitter only protect against short to GND. Short to a voltage or other cell wire would give false reading. It's still better than nothing.

Try diving units is totally different for an experienced RB divers than for non-RB divers. I have try dived Triton, JJ and Revo. Comments about the units were totally different among experienced RB divers and novices. As you gain experience you notice and appreciate different things. I suggest...

Temperature is the most affecting factor. Other gas molecules is not the answer. Non-CO2 molecules do not block the CO2 molecule from reaching the sorb. Why depth has an effect on sorb capability to scrub CO2

Sentinel is another singe counter lung model. Dual counter lungs half the peak flow rate. If using one counter lung only then front mount units use exhale counter lung and backmount units use inhale counter lung. A backmount unit got a thermal advantage with a single counter lung. The exhaled...

That link doesn't work. Is the document available anywhere else?

Oh and one other time I was starting the accent from a 50m mine dive. Back at the shaft at 50m and ready to accent I checked the handsets. Both were off!!! Bailed out for the time turning the unit back on. Cell readings matched the dill flush so went back to loop. The on/off buttons are...

Once after Inspiration Classic ADV seat blew up. Start of the dive so thought better to call it and check the fault.

So it's based on Sentinel

mCCR can have a leaky valve with fixed IP 1st stage. Or a needle or only a manual add valve. The false statements also caught my attension: "As we descend in the water column, diving physics increases our partial pressure of the oxygen, which means we need to add less oxygen into the loop."...

Argon got real proven benefits. You need to use it right. 2-3 flushes with argon on surface. For short dives you won't notice a difference. Where it matters is long and cold dives. With argon you can dive longer before feeling as chilly as with air. It's equivalent of having a thicker under...

One thing about millivolts that seem to be missing (or maybe I read too fast) is writing down the mv value when calibrating in air and with oxygen. Follow how it changes over time. If there is a jump in value something is wrong. During diving I don't see any benefit of using mv instead of pPO2.

Get training on your first rebreather and dive tens of hours to get experience. Then try dive different units. Don't forget front mount Triton. Then get your second unit which you will dive for several years. An used Inspiration is a good starter rebreather since the availability is good and you...

The EAC is like a pack of straws. Full of axial holes. Does it allow uneven flow across the cross section more easily than with a granular scrubber? Maybe EAC works bad in units which have not been properly designed for EAC and even flow across the cross section.

My first Inspiration dive was crappy. The corrugated hoses were too long and kinked causing a restriction. After readjusting the harness and shortening the hoses it was much better. OTS counter lungs are good in most positions.

I think there is a flaw how the certification test measure the WOB of rebreathers. It calculates the area inside the "Lissajou pattern". It works well for second stages and passive gas masks because the pattern is on both sides of the horizontal zero axis. With a rebreather you have...

Cells are not sensitive to ESD.

Thanks for the reference to Reynolds number. I totally forgot about laminar to turbulent flow even though I had read the "Design Guidelines for Carbon Dioxide Scrubbers" document. I still see this totally unrelated to the Zord explanation. Reynolds number is more about real gas velocity in...

I’m not an expert in chemistry or physics but this is what I have figured out about scrubber efficiency. With some crude simplifications. The most important factor to scrubber efficiency is temperature!!! Many chemical reaction rates double for every 10℃ temperature rise. The chemical...

Have you checked the Triton front mount rebreather. It's compact and simple. The fastening system for hoses and scrubber lid is brilliant. I have test dived it and liked how it breathes. It could be a little bit thinner in size.

There should be no offset b value since 0% 0mV is used as one calibration point. And repeated one more time: calibrating with single gas is already a two point calibration since the second calibration point is 0% 0mV. With two gases you can make a 3-point calibration.