Do you check your gas for CO?

[Curious_George]

What is the statistical probability someone would get a fill with elevated CO?

The question I would ask is what’s the chance of dying if I breathe air with 50ppm CO at 3atm.

The quality of the air we breathe may not always be under our control and I like knowing.

Here’s the test unit I have.
Inspector (CO) INS2-CO-01

 

[kelemvor]

I do. I've got a cootwo CO/O2 analyzer that does both. Unfortunately, the owner of the company was good at engineering but not business. A year or two ago and the company stopped making them. Fortunately, it uses commodity sensors so I can maintain my cootwo indefinitely.

I have detected CO in one of my tanks filled by a local shop in the US. It was only 1ppm. Shop cleaned my tanks, did whatever shops do to work on compressors, and apologized profusely.

 

[CanadaDan]

I just bought a tester this winter (used Analox EII CO, waiting till dive season is close to buy a replacement sensor). While I trust my LDS (countless fills over several years) the fill operator out at the local dive site is a little less known and when I'm down south getting fills from who knows who it's good to know. I'll be using it on my liveaboard trip with my stepkids next year for sure.

 

[tna9001]

The question I would ask is what’s the chance of dying if I breathe air with 50ppm CO at 3atm.

The quality of the air we breathe may not always be under our control and I like knowing.

Here’s the test unit I have.
Inspector (CO) INS2-CO-01

Do you just crack the valve and hold that sensor close?

 

[CanadaDan]

I just bought a tester this winter (used Analox EII CO, waiting till dive season is close to buy a replacement sensor). While I trust my LDS (countless fills over several years) the fill operator out at the local dive site is a little less known and when I'm down south getting fills from who knows who it's good to know. I'll be using it on my liveaboard trip with my stepkids next year for sure.

Although I just checked the cost of replacement sensors for the Analox... I may just get a Palm CO tester and save myself USD$100 per sensor change (if I can even get the Analox sensor again in two years). At USD$295 for the Analox sensor the complete USD$395 Palm tester is only USD$100 more. So the first time I replace the Palm sensor at USD$199 I'll be even and ahead USD$100 every two years after.

I jumped at the used Analox without checking availability and cost of replacement sensors... my mistake.

Edit... Oxycheq is WAY cheaper. same unit cost at USD$400 but the sensor is only USD$140 and last 3.5 years instead of Palm's 2.

Expedition CO Analyzer w/ Alarm

 

[Wibble]

Although I just checked the cost of replacement sensors for the Analox... I may just get a Palm CO tester and save myself USD$100 per sensor change (if I can even get the Analox sensor again in two years). At USD$295 for the Analox sensor the complete USD$395 Palm tester is only USD$100 more. So the first time I replace the Palm sensor at USD$199 I'll be even and ahead USD$100 every two years after.

I jumped at the used Analox without checking availability and cost of replacement sensors... my mistake.

Edit... Oxycheq is WAY cheaper. same unit cost at USD$400 but the sensor is only USD$140 and last 3.5 years instead of Palm's 2.

The Analox O2 sensor is also expensive. I use OEM sensors which are cheaper. Same for my helium analyser.

 

[CanadaDan]

The Analox O2 sensor is also expensive. I use OEM sensors which are cheaper. Same for my helium analyser.

Do you have a link? I've been unable to find a reasonably priced replacement.

 

[tna9001]

I just ordered the Palm CO device. Thanks for all of the helpful replies.

Considering how much the various sensors cost, you’d think someone would make a trimix sensor that covered CO.

 

[Wibble]

Do you have a link? I've been unable to find a reasonably priced replacement.

It's a UK company - Vandergraph.

 

[CanadaDan]

It's a UK company - Vandergraph.

Just caught that you had said O2. Wish they had CO sensors.