Analox O2 EII ???

[OMyMyOHellYes]

Understand this analyzer has been dropped by the manufacturer. Supposedly for a loooooong time.

Specific issues with it? I got one new a couple years ago and it worked fine. I got a second (older yellow cover) unit cheap off of local classifieds.

Sources for sensors? DGX prices their sensor $50 less than other branded sensors, but is out of stock for their sensor (and footnotes they are not sure about the O2 EII, particularly older specimens of the model, saying problems may be analyzer circuitry, not a sensor issue, so will not warranty - buy an $85 sensor ($130 for the branded one elsewhere) - if they were in stock - and it may not fix your problem...). I generally go with what DGX says, but it bites to have to buy a new analyzer... Palm O2 is $260, or twice what a branded Analox sensor would run. Which is what the DGX footnote advises to do.

Comments or experience w/ O2 EII units?

 

[gmerick]

Been using O2 EII for several years. on my 4th or 5th sensor. Overall quite satisfied. My source of sensors is OxyCheq. I use a sensor plug to manage sensor life, and change the battery before every trip. The only downside is the calibration knob is too sensitive, and too easy to accidently move out of adjustment.
I've found discrepancies on 3 trips where my O2E doesn't match the LOB Nuvair, and my meter was the more accurate - 4% discrepancy. Once time my meter read lower than the LDS but changing to my spare sensor resolved the issue, and the LDS and my meters matched.
For now, I'll keep using the O2E.

 

[Johnoly]

Many of us are very pleased with the Vandergraph R-33DE. Price now is £68.00 = $87usd
Shipping was just 3 days since they use Royal air mail with tracking {FAST!}
The Vandergraph sensors are praised by the technical Rebreather divers and I agree. My current sensor is 3yrs old & about 400 tank tests and still perfectly accurate, stable & repeatable readings. You won't be disappointed. You can also search SB for Vandergraph for reviews.

R-33DE Oxygen Sensor (0110224)

Compatible with: Analox O2 EII, version with JST connector Replacement of the Analox O2 EII Oxygen Sensor 9100-9220-9B

www.vandagraph.com

If looking for the "whole unit" their Tek-Ox ($234) is also getting great reviews and will be my next unit when the OEII dies. The most important thing for me is Trust - I need repeatable, stable, accurate readings. NOT 3 different numbers off the same tank

 

[OMyMyOHellYes]

Many of us are very pleased with the Vandergraph R-33DE. Price now is £68.00 = $87usd
Shipping was just 3 days since they use Royal air mail with tracking {FAST!}
The Vandergraph sensors are praised by the technical Rebreather divers and I agree. My current sensor is 3yrs old & about 400 tank tests and still perfectly accurate, stable & repeatable readings. You won't be disappointed. You can also search SB for Vandergraph for reviews.

R-33DE Oxygen Sensor (0110224)

Compatible with: Analox O2 EII, version with JST connector Replacement of the Analox O2 EII Oxygen Sensor 9100-9220-9B

www.vandagraph.com

If looking for the "whole unit" their Tek-Ox ($234) is also getting great reviews and will be my next unit when the OEII dies. The most important thing for me is Trust - I need repeatable, stable, accurate readings. NOT 3 different numbers off the same tank

Don't use it all that much - local lakes are shallow for the most part or cold below around 20-40 ft so don't bother with EAN here and when I travel I find myself usually passing around the boat/resort's analyzer, but like knowing I can test myself with known equipment...

Thanks for the reference to the Tek-OX. Hopefully not looking for a whole unit if I don't have to (intend to call DGX today to check and see if they'll discuss the problems they've seen with the Analox and maybe Analox tech support). Can't remember where I last saw my original newer green O2 EII which frustrates me (I have the Pelican 1050 case, just can't find the unit!) - I was hoping to see what the newer unit would calibrate to (if the sensor in it is still alive) and swap it out for this older unit. If I can get the same readout on both analyzers with the same sensor, I would feel better. Don't have a source for 100% O2 handy, but I might try asking the local shop that does blending or the tec instructor I'm taking a reg serviceing class from in a couple of weeks and see if they would try it out for me.

I looked at the Tek-Ox and I like the look of it, particularly the bigger numeric display. Any smaller than the Analox?

If, at the end of the day, I can't get comfortable with this older unit (2014 model), I won't sweat it as I gave ~ $50 IIRC for it. Which a new Vandergraph or DGX sensor plus that amount roughly equals the cost of a new branded Analox sensor... If nothing else, I got another Pelican 1050 Micro case with it and that's worth something.

 

[OMyMyOHellYes]

Postis Scriptus:

I found my newer O2 EII -

It was working. Or at least powered on and I could crank the pot until it read 21.0%... So I took sensor from said unit and put it in the older unit (we'll call it Ol' yeller as it has the older yellow face plate and power button). It too powered on and I could rotate the pot until it too read 21.0%. So far so good.

But then I started looking closer at the inside of Ol' Yeller noting a funky residue in places. Then I pulled the old sensor from the trash and the top of it showed a kind of crinkly residue too (It was not an original Analox sensor). Then I pulled apart Ol' Yeller's case to get a look at the inside of the case where functional parts live. It showed where Captain Overtorque(R) had assembled that case at some point and cracked the housing by using his Hulk(R) hands and once the screws holding the face to the case snugged up nicely, proceeded to turn the screw another 3/4 of a turn just to make sure. Also noted intrusion onto the back of that case half of the same sticky goo I found on the top of the sensor and in the hard-to-access nooks of the battery compartment. I assume at some point somebody put a 9V battery in there that had vomited up all its electrolyte. Now, it still "works", but I don't think I'm gonna invest in a sensor for this one, in this condition. I can claim some spare parts out of it and the Micro Pelican 1050 case so there's that...

I suspect I will continue to use the newer Analox O2 EII. This usually gets used a couple times on trips to cross check the resort or boat's analyzer that is always handy in the tank shack or on the boat. I did test the voltage coming off the sensor, which in normal 21% air Analox says should show 50 mV. It jumped between 30-40 mV which is servicable using the pot for correction, but it's been a few years since I bought it so I think I may drop a new sensor in it before the next trip.