O2 analyzer sensor replacement

[kelemvor]

I've got a question about the sensor in O2 analyzers. I understand the sensor needs to be replaced regularly. Is it something that needs to be replaced after a specific period of time (e.g. every year or so)? Or is it a function of how much use the analyzer gets?

 

[BRT]

The sensors age if you have the meter turned on or not. They may age less when sealed but you still don't want to buy an old stock new sensor.

 

[kelemvor]

I was trying to figure out some rough idea for how often the replacement will need to be done. Any estimates? If it's a use thing, I'll probably be diving under 100 tanks a year.

 

[flots am]

I've got a question about the sensor in O2 analyzers. I understand the sensor needs to be replaced regularly. Is it something that needs to be replaced after a specific period of time (e.g. every year or so)? Or is it a function of how much use the analyzer gets?

You need to replace it when it can't be calibrated anymore (when you can't get to %20.9 on air or %100 on O2)

Sensor life is variable and has more to do with storage conditions than usage.

flots

 

[Scared Silly]

As said sensors are consumable. It is a chemical reaction with O2 that is going on. I have found that is the sensor is kept sealed when not in use that it will last 4-5 years. Otherwise more like 3 years or so. It al depends on the mfg as well. Analox has a 3 year guarantee on their sensors. As for when to replace them - as said when you can not calibrate them any longer.

 

[kelemvor]

Thanks for the info, guys!

 

[Peter_C]

I have had them last for a year, another for a few years. How I store them doesn't seem to matter too much as the one that lives in my mixing stick is still good yet the one I keep capped has failed along with a another I stored capped. I buy one every few years, and just shop the internet for the best deal.