I have a project where i need to measure the ppm of various gases. I'm pretty new to the arduino gas sensors world, i purchased the mq-series and then i noticed that is not what i need: the mq-series does not measure the ppm of single gases, but they only detect if there is an increse of concentration. Also i need to measure ppm of single gases, for example if i need to measure the carbon monoxide, i can't because the MQ-7 is sensible to other gases also.
If you guys can recommend me some sensors that actually measures the ppm of SINGLE gases, with a medium price range, would be great!
Some of the gases that i need to measuse: CO, CO2, O3, SO2, H2S, N2O
Thanks in advance!
We are sending a sounding baloon in the stratosphere, and the idea is to also put inside the box a sort of on-board computer with arduino that collects data about pollution from the ground, all the way to the space. Sincerely, i have no idea what ppm range i need for each gas (if you have an advice, it would be beautiful). It must not be very precise, but the data must be reliable.
We have sent multiple balloons into space in the past, and we retrived all of them succesfully thanks to a gps device.