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I measured two BigBlue lights. The results were surprisingly bad.... VTL8000P Max, 1500 lux, 8500K, 66 CRI VL11000, 2100 lux, 8000K, 66 CRI So these cheap 50$ Chinese lights beat 800$ BigBlue lights in light quality. The BigBlue lights had a stronger spike in the blue spectrum making the...

I have only tested the model mentioned in my post. I will also test a BigBlue 900€ light many of my dive buddies use. I checked some Cree datasheets and prices. You can't even buy the genuine leds for the price of the whole video light. My idea is to have two light on the setup and also 2-3...

Quick lux radings in dark room 1m distance from lux meter: High 2100 lux Mid 480 lux Low 180 lux

I received two lights from AliExpress. The order model was AS27-1H but the instruction manual says Sealion-B15. It was sold as a 20000lm light. 12000lm disappeared as soon as I opened the instruction manual. The manual states 8000lm. The brand is LetonPower. Other brand option was BRETT but I...

The reaction front is longer closer to the canister sides because of temperature differences. The middle of the scrubber is hotter and the reaction is faster making the reaction front shorter.

I have two of these light coming this week. I'll look into changing the switches to magnetic/hall switch models. I have also access to a lumen meter (integrating sphere) and a light spectrum meter. I'll measure the true lumens and colour temperature.

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.