Analox Replacement 02 Sensor
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Analox Replacement 02 Sensor

SKU: AQUNAOAS MFR: 9100-9220-9B
(20)7 questions, 52 answers
$139.95

Key Features

  • Ensure your gas blends are spot-on with this accurate oxygen sensor for diving safety.
  • Get reliable performance with our temperature-compensated electrochemical oxygen sensor.
  • Enjoy a clear display and easy-to-use design for hassle-free gas analysis before every dive.
  • This durable O2 sensor boasts a quick 15-second response time, ensuring rapid readings.
  • Operates effectively from 23°F to 122°F, making it perfect for various diving conditions.
  • Backed by a 3-year warranty, this compact Analox O2 sensor offers peace of mind on every dive.
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Temporarily On Backorder?Expected Availability: 07/31/2025Request assistance or get notified
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Q&A

Questions & Answers

kerry o : Will this o2 sensor work in the O2NE oxygen monitor?Robert T : yes
Raymond H : How do I know when it needs to be replaced?JAMES T : When you can no longer set the instrument to 20.9% in ambient air, then it is time to replace the sensor.JEFFREY K : Unfortunately there is no way to tell until until it stops working. What gets even worse- you may not even want to buy a replacement cartridge because they have a limited shelf life. If having an analyzer working at all times is important to you, then I suggest you buy a second complete unit, test it then just keep it sealed until the first one craps out. You could just buy a replacement O2 sensor, but there is a good chance that another part in the sensor may break or the whole unit may be lost.VINCE K : My Analox nitrox analyzer, gives some really odd reading. I would say we get 3-4 years. Not sure what the manufacturer says it gets, but that is what I get.SAMUEL E : When the meter wold not zero before use.YUVAL T : when you cant calibrate it / get strange results. they are supposed to be good for about 2 years.ROBERT S : When it stops working you will need to replace the sensor. Usually when the battery stops working you will need to replace the sensor. Or if you go to analyze a tank and it doesn't show percentage and you know it has AIR in it then you will need to replace the sensor.Michael R : If you have sealed the sensor after use each time, you should get between 1 to 2 years worth of use. If you can't adjust the analyzer to 21% when analyzing normal air, it's time to change the sensor.
Shopper : ARE THE REPLACEMENT ANALOX BUILT BY ANALOX OR SOME OTHER COMPANY?KEVIN F : Analox has stated it does not manufacture electro-chemical oxygen sensors as this is not a process undertaken by their business (wet chemistry). They purchase these from a number of reputable suppliers. “Be sure to only use Analox approved and marked replacement O2 sensors distributed by authorized Analox dealers. Use of other sensors may void your O2EII Pro warranty.”
Peter T : What's the expected shelf life for this product? I'm planning on getting the analyser and want to know if I should get a replacement now or when the existing sensor expires.DAVID O : To answer Peter's question I would not purchase a replacement O2 sensor until you need one because my analyser didn't need a replacement sensor for 4 years. The sensor in the bag not being used still has a shelf life and may expire by time you need it.JAY H W : Analox sells a cover for your analyser that keeps air from getting to the sensor. It will extend the life of it. I find the life of a sensor to be about four years so I would wait until I needed one.JEFF M : mine lasted 2 years or about 200 fillsDIANE M : Wait until you actually need to replace the O2 sensor.MIKE H : Depending on daily use, 1-1/2 years, with saver plug attached. Humidity and storage has an effect as well. But I have found no longer than 2 years.JOSEPH A : Sensor life is supposed to be about 4 years, warranted for 3 years, once installed. Mine lasted around 5 years. I don't know how long one would last in an unopened shipping bag, though.ARCHIE J : Dont recommend purchasing ahead of time since the life of O2 sensors is approx 2 yrs. I recieved mine in only a few days after placing my order.DOMINICK M : Usual O2 sensor life is two years. Wait until you need the sensor as shelf life can be an issue.PAUL L : Wait till it expires as while they are sealed, they are dated. Should last at least two years (providing it's cared for properly) but mine failed within the first year. Looking back I should have called the manufacturer regarding replacement.DAVID P : it's something like 3 years. I would definitely NOT buy a replacement now as I understand they deteriorate based on time and not use.JOSEPH P : if you replace the plug when not in use the sensor will last for years.DEREK S : Definitely wait until the sensor in the unit needs replacing. Different manufacturers recommend different expiration times for their sensors (12-18 months), but even sitting in the packaging they are already losing life. Considering normal shipping times are 2-3 days, it is not a problem to order a new one.GARY B : Given the sensor is basically an chemical-electrical reaction with a limited life span and will expire regardless of use, it's better to wait until the existing sensor begins to exhibit problems, such as unstable or fluctuating reading, before replacing it. The one you have sitting on the shelf may possibly be expired by that time as well. It's far better to replace them once they begin to go bad, than to rely on one that's been sitting on a shelf.
Shopper : My Analox 02 EII is showing 00,0 or 00,1 (if turning the knob) instead of 20,8. I was just wondering if I need to change the sensor or if there is something else wrong with it. Have you heard of this problem before?JEFF M : change battery first if that dosent get it change sensor its the only 2 things it could beARCHIE J : Mine did the same, time to replace the sensor.MIKE H : You should replace both the sensor and battery, that should solve your problemVINCE K : That would be the place I would start. Replace the sensor. The sensors have a lifetime of about 2 yrs, weather used or not.JOHN C : My guess would be if your battery is good and the Analox has not had any damage, or moisture/water, and if the sensor is over two years old, then replace the sensor. Make sure when you store the Analox you have it in a sealed container like a pelican box. Moisture will dramatically reduce the life of these sensors.STEPHEN P : Most likely the problem is an exhausted O2 sensor which is easy to replace by the owner. Less likely - the 9 volt battery is near dead. Steve PadarFRED G : The probability is 95% that the sensor has reached the end of its life, and must be replaced. There's a remote possibility that something else is wrong with the analyzer, but most likely it's the sensor. They are electro-chemical devices which eventually always lose their functionality simply through aging. I think the maximum useful life of an O2 sensor is around 3 years, depending opon the brand, but you'd have to check with the manufacturer to get the published operating life.DOMINICK M : I had the same issue. Sensor was around two years old. I replaced the sensor and unit calibrated perfectly.

Reviews about this item

Review Summary

2024-11-19T13:58:43

Rated 5 out of 5

O2 Sensor

Replacement sensor was an exact match. Simple replacement, tested accuracy on a Nitrox fill, and we are back in business, ready to dive.

LARRY H.

2021-03-04T08:30:29

Rated 5 out of 5

Great product

???????????? It works great just what I needed

William H.

2020-11-22T11:07:20

Rated 5 out of 5

O2 Reader is Exactly what was needed

Works great and fully repaired my o2 reader.

Scott S.

2019-03-04T03:52:58

Rated 5 out of 5

works great

easy to install works perfectly

Paul B.

2018-12-02T04:46:35

Rated 4 out of 5

Works

Properly packaged and works fine. However, I did not see a manufacture date on it. These have a limited life.

JAMES J.

2018-06-15T13:59:02

Rated 5 out of 5

Genuine Analox Sensor

My Analox O2 Eii sensor died and this appears to be a genuine Analox replacement. My analyzer now works again.

Adam H.

2018-04-09T11:01:31

Rated 5 out of 5

Perfect!

The sensor in my Analox O2 analyzer needed to be replaced. This is just want I needed!

MICHELE H.

2017-11-09T08:45:52

Rated 5 out of 5

Perfect fit!

Perfect fit. Oxygen sensor back operation! Easy installation.

Derek F.

2017-10-17T09:55:22

Rated 5 out of 5

Reliable O2 sensor

Excellent product in terms of reliability. The new one we installed has a faster and more stable response as compared to the one that we'd been using for several years.

MERRY P.

2017-09-27T08:46:01

Rated 5 out of 5

Analox replacement sensor

Quality and efficiency was phenomenal. Quick to shop, excellent description to ensure I got the right one.

Rich K.

2015-04-11T20:00:00

Rated 5 out of 5

Sensor is 100%

As always Leisurepro delivers a top product. One of the very few online places I ever use or trust. The delivery as always is very fast and very reliable.

Jason S.

2014-08-20T20:00:00

Rated 5 out of 5

?

The analox analyzer has been a very useful product. I have owned this one for 12 years and replaced the sensor twice and it keeps on ticking. Hope it stays on the market.

Russ

2014-03-03T19:00:00

Rated 5 out of 5

Excellant Product and prompt service

Excellant replacement part for my Nitrox Analyzer.

Bouldaire

2013-08-12T20:00:00

Rated 5 out of 5

Analox O2 sensor

Replacement sensor for Nitrox Analyzer. Very easy to install. A must if you dive Nitrox.

TColJeep

2013-07-21T20:00:00

Rated 5 out of 5

Analox O2 sensor has anaylzer working

Easy to replace once the cover is removed from the analyzer.

Lars

2013-07-11T20:00:00

Rated 5 out of 5

O2 sensor replacment

Best Price!

L

2013-03-16T20:00:00

Rated 5 out of 5

I would buy this product again and again

Analize O2 gas Great product

Felipe

2012-12-31T19:00:00

Rated 5 out of 5

Great Replacement Part

The replacement sensor extends the life of the analyzer at about 50% the cost of a new analyzer. Its a bit pricey but it beats the heck out of having to purchase a new analyzer every 4 or 5 years.

gadgetboy

2012-11-12T19:00:00

Rated 5 out of 5

Easy Replacement

Even though this is an expensive part, I saved about $100 by replacing the oxygen sensor rather than buying a brand new analyzer (different brand that I also like).

Vance

2011-10-24T20:00:00

Rated 5 out of 5

Replacement O2 Sensor

Fast Delivery Well Packaged

James

Analox Replacement 02 Sensor Specifications

  • Range

    0.1 to 100% O2

  • Display Accuracy

    +/- 1% of reading +/- 0.2% of O2

  • Sensor Type

    Temperature Compensated Electrochemical Oxygen

  • Response Time

    15 Seconds to 90% of Final Reading

  • Operating Temperature

    23 Degree F to 122 Degree F (-5 Degree C to +50 Degree C)

  • Pressure

    Ambient

  • UPC Code

    5060280610035

About Analox Replacement 02 Sensor

FEATURED REVIEWS

Genuine Analox Sensor

By Adam H.

My Analox O2 Eii sensor died and this appears to be a genuine Analox replacement. My analyzer now works again.

Perfect!

By MICHELE H.

The sensor in my Analox O2 analyzer needed to be replaced. This is just want I needed!

If you are going to do some mixed gas diving, you need to have oxygen sensors that are going to work for the entire trip, not just the first few dives. Oxygen Sensor is for the O2EII Nitrox Analyzer (see SKU's: AQUNAK, AQUN02E2P). With an expectant life of 4 years, replacement sensor is easy to install in analyzer. Sensor is an internal temperature compensated electrochemical oxygen design. Sensor comes complete with O-ring seal. Sensor has a typical accuracy +/- 1% of reading +/- 0.2% of O2, an operating temperature of 23 Degree F to 122 Degree F (-5 Degree C to +50 Degree C), a sensor response of 15 seconds to 90% of final reading, a resolution of 0.1% O2 Replacement O2 Sensor makes a great save-a-dive-kit item.

Analox Replacement 02 Sensor Features

  • Replacement 02 Sensor:
  • Designed for Use w/Analox O2EII Nitrox Analyzer
  • For Analyzer See SKU's: AQUNAK, AQUN02E2P
  • Measure Oxygen Levels in Range 0.1 to 100% O2
  • Resolution: 0.1% O2
  • Typical Accuracy+/- 1% of reading +/- 0.2% of O2
  • Sensor Life Up to 4 years
  • Operating Temperature 23 Degree F to 122 Degree F (-5 Degree C to +50 Degree C)
  • Sensor Response: 15 Seconds to 90% of Final Reading
  • Complete w/O-Ring
  • Great Save-A-Dive Kit Item

Warranty Information

This product has a limited warranty of 36 months.

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Key Features

  • Ensure your gas blends are spot-on with this accurate oxygen sensor for diving safety.
  • Get reliable performance with our temperature-compensated electrochemical oxygen sensor.
  • Enjoy a clear display and easy-to-use design for hassle-free gas analysis before every dive.
  • This durable O2 sensor boasts a quick 15-second response time, ensuring rapid readings.
  • Operates effectively from 23°F to 122°F, making it perfect for various diving conditions.
  • Backed by a 3-year warranty, this compact Analox O2 sensor offers peace of mind on every dive.

What's in the box:

  • Replacement 02 Sensor
  • O-Ring
  • MFG 3 Year Limited Warranty