RS232 CO2 Sensor Cozir CM0017

hello guys, I am still a Arduino beginner and I have a problem. I have to address and output the CO2 concentration with a Cozir CM0017 CO2 sensor via an RS232 serial interface for a part of a project. I am not so good at this and I would like to ask for your help with my problem with tips and solutions.

PS: sorry for my english I am from Austria :D

Thanks a lot and I hope for helpful answers.

Please provide link to data sheet of the actual sensor you're using. I can only find this one and it connects not to RS232 but to UART (it even explicitly mentions in the documentation that if you want to connect to RS232 you need a level converter).

For the one linked, if that's your sensor: if you have a 3.3V Arduino you can connect it directly (Tx to Rx, Rx to Tx, 3.3V and GND) - if you have a 5V Arduino you'll need level converters.

wvmarle this is the Sensor I am using

https://www.co2meter.com/products/c20-sensor-tube-cap-adapter

That link is just a housing for the sensor. Not the sensor itself.

wvmarle:
That link is just a housing for the sensor. Not the sensor itself.

And the web site search cannot find a “CM0017”.

Paul