Measure Oxygen in the Air (room, glass, cost, building)

[sll3454]

Is there a monitor that will measure the oxygen level in a room - I mean, one that doesn't cost thousands of dollars?

[WRM20]

There are dozens of portable instant read monitors available online, some under $100

[L00k4ward]

Originally Posted by sll3454

Is there a monitor that will measure the oxygen level in a room - I mean, one that doesn't cost thousands of dollars?

If you don’t mind telling us - why?
A common knowledge that oxygen is nearly constant in the air- 20-21%.
22% in an artificially enriched environment.

Unless the room is very well air sealed?
Are you building a dungeon and want to make sure your slave won’t die for the lack of oxygen?

[sll3454]

Originally Posted by L00k4ward

Are you building a dungeon and want to make sure your slave won’t die for the lack of oxygen?

Maybe. But if I told you, then . . .



Or maybe it's something less nefarious, like a kid's science project, or just curiosity. And maybe if I told you, that would become the topic of the post - which it isn't meant to be.

[L00k4ward]

Originally Posted by sll3454

Maybe. But if I told you, then . . .



Or maybe it's something less nefarious, like a kid's science project, or just curiosity. And maybe if I told you, that would become the topic of the post - which it isn't meant to be.

Lighten up!
Just making a joke!
I am sure you are an upstanding citizen!

Not sure what is “inexpensive” for you, but here is one:
https://pksafety.com/teledyne-proteg...AaAj_yEALw_wcB

The advantage is that this one does not need calibration- most do.
It depends how precise you need it.
Bare in mind that once activated- will run non-stop - and be careful with alarm setting

[harry chickpea]

A crude one-off way is to buy a memorial candle in a tall glass jar, burn it down and clean it, then burn a votive candle in a shallow dish of water. Invert the glass jar over the votive until it is below water level, and measure how far the water comes up as the candle extinguishes from lack of oxygen.