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I can see that having a portable unit that each diver carries around with themself may not be totally necessary or at least economically feasible. However, I'm surprised that filling stations don't have analyzers like this just as a matter of diligence. I guess I'm just naive, and assumed that...

For what it's worth... The wakeup period that PacketSniffer is referring to does actually exist. This actually refers to the fact the O2 cell has been exposed to N2 for an extended period of time and the N2 has completely diffused through the membrane and has flooded the inside of the cell. It...

I think all of that is doable, I'm just not sure if it's worth the effort to build and sell something like this? Assuming calibration wasn't an issue, for something like what we're talking about here; what price do you think the market could bear?

I really appreciate the time and input from everyone as I try and understand all of this. So far I don't see any "show stoppers" for a design of something to measure most of these things "real time" in a flow thru "manner". A couple of things that I don't understand: Which total hydrocarbons...

I'm surprised that there doesn't exist a piece of equipment that can test CO2, O2, CO and Humidity? Something inline / realtime, that can give the operator realtime feedback as to what goes in the tank? It just seems to make sense to me. A lot of factors can change from the time a sample is...

Qualifier: "Please don't interpret my questions as being "smart-***" or "hyper-paranoid". I'm genuinely interested in how the quality of the gas that goes into my tank is tested. What things are tested for, and how often. How about CO2 and O2? Can you tell me what is used to test water and...

I was thinking more along the lines of in-house testing equipment?

Hi All, I'm curious how you guys test the quality of the gas for filling tanks? What do you test for and at what levels? Best Max

I've worked with O2 cells for several years in a research capacity. I wouldn't call myself an expert by any means, but I've had enough experience with a variety of different types of oxygen sensing technologies. The type of cells used in the SCUBA industries are the galvanic cell type. These...