FD-O2BOX

Oxygen Analyzer… I purchased this to see the percentage of O2 output from oxygen concentrators. It was easy to set-up; it worked like a charm, and it is accurate! Thumbs up!

Ok so here's the deal: I am on o2 therapy. Wanted to actually test the large concentrators vs the tanks vs the travel ones I have decided to purchase because let's be honest even pacing through my insurance to rent theirs stiff is a scam where the sales guy is literally making a living off me renting them each month. Everyone needs a job but I don't consider myself an employer. Just my personal 411. So this handy little device seems to be pretty accurate when I measure my sats while using it. I have way more I could write but i will wait to see if anyone Actually wants me to go into detail here before I literally fill a page with useful(less to some) info and stats. So in order not to waste anyone's time,, I will be happy to update when I see a notification that this review is marked as helpful. If not, ill save my useless(full to some) info for elsewhere.

I've tried this item twice, and both times they failed. The analyzer rattles in its case and turns itself on because the buttons stick out, and the batteries drain. Then, you need a screw driver to open it and change the batteries.After we created custom padding to help it sit snugly in its case, it stopped working alltogether.We needed one quickly, and the second one quickly stopped giving a usable reading as well. Bad product.

Seems to work quite well for the money. Only issue I've found is the power button is to easily triggered when in the case, as others have stated. Thinking of 3D printing a button cover for it, as it will stay on and drain the battery.

Worked fine when first purchased. Quick and easy to analyze mix. Used on two dive trips then put away for 6 months with batteries removed. Then it would not calibrate to 20.9% . Used new batteries still not working properly. I think the sensor may have died.Contacted manufacturer through their website e mail. Sarah got back to me within one day with a recommendation to fix issue. When that didn't work she immediately arranged for a replacement unit, which I received within a week. A good product but even better : Great customer service!!

Accurate and easy to use. Was testing an extreme Live O2 oxygen maker that varies from 10-85% oxygen percentage levels. This worked perfect to test and results as expected confirming my generator functioning correctly.

The product seems to not have any measurements adjustments. When the gas pressure increases just a little bit, like 1 psi, indicated value also increases. But the gas composition is actually the same.Assuming the dynamic pressure near scuba tank valve oscillates much more than 1 psi, I would not trust the measurements. Or at least would not consider them "with error < 0.2%".What they had to do, is adding an absolute pressure sensor (and probably temperature) and adjust the raw values for the gas thermodynamic state.Sorry I have to return this.

The O2 Analyzer works great. It is easy to use and the way it passes air over the sensor is far simpler than any other analyzer that I've ever used. Just shy of 2 years the analyzer starting giving clearly erroneous measurements. I contacted Forensics and returned the device to them, apparently the sensor had failed, even though it was out of warranty they sent me a new unit. Couldn't be happier.