Does anyone have any plans for a cheap DIY Ozone sensor? My house came with an electronic air cleaner called an iWave:
It claims to not emit any Ozone, but I'd like to be able to meaure it, and the commercial sensors tend to be expensive.
It claims to not emit any Ozone, but I'd like to be able to meaure it, and the commercial sensors tend to be expensive.
If you haven't smelled it before - I would recommend going to a retail store that sells ozone-based air sanitizers. That should give you a whiff of the stuff for reference. You can also find it in [some] hospitals for air sanitization. I imagine once you smell it, you will realize you have smelled it before and maybe not realized it was ozone that you were smelling.
My air purifier is built into the furnace ductwork so it's already pretty diluted air by the time it comes out of a duct.
That's neat! Do you know if the ozone is produced before or after it reaches the blowing mechanism? I ask because if it is produced before, like right after the air intake, that's a really great setup for keeping your ductwork mold and mildew free. I've wanted to buy such a system but keep holding out for things to get cheaper... in the meantime, I use an ecoquest "FreshAir" model sitting on top of the fridge.
The unit is installed after the filter, but before the air is sucked into the blower.
[1] There are a few different kinds of MQ131 (for high and low concentrations); you'll probably want the low concentration one. I also removed the bare sensor from a breakout board I purchased so I could access it directly from my custom PCB.
[1] https://www.sainsmart.com/products/mq-131-gas-sensor-ozone-m...
[2] https://learn.kaiterra.com/en/resources/ozone-what-levels-ar...