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I'm building a portable emission analyser which measures emissions from a tailpipe, to aid in troubleshooting and tuning an engine. For this, I need a $\text{CO}_{2}$ , a $\text{CO}$, and an $\text{O}_{2}$ sensor.

While these sensors are widely available, I am in search for the type of sensor that has the lowest response time, while being able to measure in the range of 5-10% (gas dilution is not an option for my application). I already found a $\text{CO}_{2}$ and an $\text{O}_{2}$ sensor that are able to do so, but I can't find a $\text{CO}$ sensor with these capabilities.

Those all seem to have a response-time of around 30 seconds, and most are only able to measure up to around 2000ppm. I need a sensor as fast as 1 second or faster and able to measure at least 5% $\text{CO}$.

So, Is there a $\text{CO}$ sensor on the market that is able to measure in the range of 5%, while responding within 1 second?

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  • $\begingroup$ I'm afraid that shopping questions are off-topic here $\endgroup$ – EnergyNumbers Sep 1 '17 at 19:38
  • $\begingroup$ @EnergyNumbers I get the rules about shopping, but i'm not asking for a recommendation or other subjective answer here.(ie. in the main question) I need a sensor with certain capabilities and i'm asking if anyone knows if there's such a sensor available. $\endgroup$ – Bart Sep 2 '17 at 19:23
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    $\begingroup$ To improve the chance of your question to survive the close vote, I removed the really shopping-like part from the end. If it really conflicts with your intent, feel free to put it back. $\endgroup$ – peterh says reinstate Monica Sep 2 '17 at 22:35
  • $\begingroup$ @Bart - exactly, you're asking if such a sensor is on the market. That's a shopping question. After all, an answer that just said "yes" would be useless to you and anyone else reading the question. $\endgroup$ – EnergyNumbers Sep 3 '17 at 6:18
  • $\begingroup$ Were you able to resolve this issue? $\endgroup$ – Mahendra Gunawardena Sep 24 '18 at 8:50

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