Do I need a new sensor?

[Jimmer]

Hi,

My Analox O2EII (which I totally love!) has started giving me erratic readings, fluctuating by a couple percent above and below my calibration point (20.9) and above and below my expected mix. Is this a sign that my sensor is due for replacement, or is it something else?

This is the first time I have noticed this, it is usually pretty stable.

Thanks,
Jim

 

[Scared Silly]

Sounds like it to me. How old is the sensor? Mine is going on 4 years and is still okay but I have not used it in a few months and I store it with the saver cap on when not in use.

 

[Patti Analox]

Hi Jim,

So glad to hear that you love your O2EII! The age of the sensor is key. Open the yellow access panel and remove the sensor. There is a 2 digit REF code located to the left of the serial number, ie: B6. The alpha digit refers to the months of manufacture A= January, B=February, the number is the terminal digit of the year. The O2 sensor carried a 3 year graded warranty. If it is over 3 years old and is giving unstable readings, it's time to replace! You can obtain replacement sensors at your favorite dive shop or at Homepage: Analox - Looking after the air you breathe.

 

[Jimmer]

Thanks Patti, I bought this analyzer when I did my nitrox cert somewhere around 2006, so I guess it's a safe bet that I need a new sensor! Scared Silly, thanks for the tip, I will look into the cap for the sensor when I order a new one.

Jim