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I'm looking for a $CO_2$ measuring probe (analog current output, digital out: RS232/485 - probe will be connected and transferring real time data to the data logger) that would operate up to 150 °C (hot air sucked out from the heated column which is highly concentrated by $CO_2$).

Another $CO_2$ probe should measure (rather control) trace amount of $CO_2$ after it's separated from the exhaust gas (small scale experimental boiler burning coal) - operating temp. approx. 75 °C.

I have found tons of probes, but all of them measure up to + 60/65 °C.

Do you have any experiences with such probes?

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  • $\begingroup$ I am not an expert, but a quick google by including "high temp" gave me some solutions vaisala.com/en/products/… $\endgroup$ – EarlGrey May 17 at 19:30
  • $\begingroup$ this question is a better fit over at electronics.stackexchange.com $\endgroup$ – trond hansen May 17 at 20:00
  • $\begingroup$ or engineering. $\endgroup$ – mart May 18 at 14:32
  • $\begingroup$ @trondhansen I see, I was having hard time finding a proper StackExchange community, thanks. $\endgroup$ – Josh E. May 18 at 20:11
  • $\begingroup$ @EarlGrey I came by many similar types of probes. There's a difference between conditions the probe can withstand and the operating conditions. Probes for incubators are designed for sterilization cycles which are up to 200 °C because it won't make much sense to remove them every time. As for this one, it can measure $CO_2$ up to +70 °C. My case is to measure at higher temp. $\endgroup$ – Josh E. May 18 at 20:17

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