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CO2 analyzer (sensor)

Dear friends
My research topic is about designing a chemical reactor for CO2 capture. I have designed an experimental reactor and I need to measure the concentration of CO2 in the outlet of the reactor. Accordingly, I need a CO2 analyzer (CO2 sensor) that would be able to measure the concentration of CO2 and record it in the computer. I have searched google, but I have not found too many products that can be used in my research. Could you inform me if you know any CO2 analyzer or sensor that meets the following criteria:

1) I need to record the variations in CO2 concentration in short periods of time, for example every 20 sec. The analyzer should have a data acquisition system or can be connected to data logger to record the data in the computer.

2) I need to change the flow rates every time I begin the experiment. The range of flow rate will be between 1 to 5 Lit/min. The flow gas usually contains 25% of CO2.

While I appreciate your kind attention, I look forward to hearing from you soon.

Best regards

Saeb



alexdy6 years ago
Look for Tongdy CO2 sensor on Google , there's one CO2 monitor with data logger that can meet your needs.
There's lime water:
http://en.wikipedia.org/wiki/Lime_water

And then there's NDIR
http://en.wikipedia.org/wiki/Nondispersive_infrared_sensor

The lime water is probably cheaper. Read both those Wiki articles, and the sources they link to, and then you'll know as much as I do about detecting gaseous CO2.
Look for TGS sensors. I don't think you've looked terribly hard, because Google is full of suggestions, especially at these high concentrations.