Need a high-temperature CO2 and O2 analyzer

[sbuckingham]

Hi all,

I was wondering if anyone could point me towards a good manufacturer for in situ CO2 and O2 analyzers. I'm having trouble finding any suitable for my process temperature (~400C, mostly N2 gas). Most I can find are either <100C or >600C. Looking to measure around 0-1000 ppm CO2 and 0-10% O2. If you know of any, please let me know!

Thanks,
Steve

 

[gregjwilson]

Try an automobile emissions gas analyzer. I'm using one to test O2 and CO2 levels (for flammability) in a chamber with temps up to 500C, works very well.

 

[Bribyk]

In situ? An engine/flue gas analyzer will work for this but your gas sample has to be cooled before it gets to the sensor. You draw a sample from where it is very hot (i.e. exhaust or flue gases) and then it is filtered and cooled before passing through electrochemical sensors to measure its make up.

 

[schlebda]

See if this helps:

http://library.abb.com/global/scot/...f43ec2828525711b001f507f/$File/D-NO-SMA_2.pdf

 

[Thedroid]

We use California Analytical, and filter the sample through a trap and water cabinet.

 

[Charlie41]

I am assuming that you need to measure the sample at the stated temperature. This sounds like a stack type measurement. I would suggest that you look at a Tuned Diode Laser (TDL) from Analytical specialties. They do measurements across stacks and fire boxes.

 

[hacksaw]

most of the industrial analyzers handle the temperature, but those are not cheap

 

[JLSeagull]

Consider a sample cooler if permitted by the (EPA) analysis method.

 

[KiwiMace]

Extractive types may be available from Horiba, Land Instruments and Campbell-Sevey.