Oxygen and Carbon Monoxide gas sensors

[ddscientific]

Hello all,

We've come across a few posts regarding Oxygen and CO sensors when testing Oxygen concentrations and the presence of CO,

We'd like to help with any technical questions or support any members have.

DD-Scientific

 

[JohnN]

Hello all,

We've come across a few posts regarding Oxygen and CO sensors when testing Oxygen concentrations and the presence of CO,

We'd like to help with any technical questions or support any members have.

DD-Scientific

What products do you have that will measure O2 between 21% and 99% and CO between O ppm and 10ppm?

 

[ddscientific]

What products do you have that will measure O2 between 21% and 99% and CO between O ppm and 10ppm?

Hi John,

We have a range of sensors for O2 and CO.

The two that may be of interest to you are the S+4 2ECO and the S+DOX,

attached are the datasheets

 

[MadUKDiver]

The @ddscientific S+4 2ECOH sensor (0 - 200 ppm CO) is used in the Cootwo dual O2/CO analyser (which sadly is no longer manufactured following the closing of @DiveNav).

 

[Pedro Burrito]

I purchased the COOTWO O2 and CO sensors directly from @ddscientific . They responded quickly and I would purchase replacement sensors from them without hesitation.

 

[CanadaDan]

It's a niche market but have you considered making a CO sensor that will work in the Analox EII CO units? As far as I can tell the original company stopped making them and the sensors are hard to find at anything close to a reasonable price.

 

[ddscientific]

I purchased the COOTWO O2 and CO sensors directly from @ddscientific . They responded quickly and I would purchase replacement sensors from them without hesitation.

Thanks for the kind comments pedro!

 

[ddscientific]

It's a niche market but have you considered making a CO sensor that will work in the Analox EII CO units? As far as I can tell the original company stopped making them and the sensors are hard to find at anything close to a reasonable price.

View attachment 736545

Hi Dan, What's the diameter and pitch of the threaded section? and the working range of the sensor? it's possible that we may have a solution for you but it is hard to tell from the picture

 

[MadUKDiver]

Hi Dan, What's the diameter and pitch of the threaded section? and the working range of the sensor? it's possible that we may have a solution for you but it is hard to tell from the picture

I expect it is M16 x 1.0P METRIC FINE PITCH, the same as their oxygen sensor.

Looks like a standard 4-series 3-pin CO sensor inserted into their green housing. Something like your GS+4CO2H or even GS+4CO might do the trick but sadly I don't have an EII CO detector to play with.

Here are some photos and the detector specification...

 

[CanadaDan]

Hi Dan, What's the diameter and pitch of the threaded section? and the working range of the sensor? it's possible that we may have a solution for you but it is hard to tell from the picture

Sorry for the long delay... lost my thread gauge and had to get a new one lol.

MadUKDiver is correct, its M16 1.0P. Here's a quick illustration of the measurements (I neglected to measure the diameter of the pins themselves)

If it helps I would be more than willing to ship my old sensor to you if needed. I could also send the analyser itself for testing (that part I'd need back )