Liquid/Gas detectors

[FullMetalArthur]

I don’t know why anyone hasn’t posted this (or maybe someone has) but atmo sensors have a very limited use outside a controlled sealed room, liquid and gas filter’s effective use is to separate gas but how about a Gas/Liquid detector sensor?

It becomes active when in contact with the specified liquid/gas. Simple. When i want to remove undesired small pockets of gas from my base, but not having a pump and filter working non-stop. 

For example, I have smalls pockets of hidrogen or nat gas in my base, so I install a pump but have to monitor them constantly, and atmo sensor wont work since only measures pressure. Those flatulent dupes can make scary ammounts of natural gas lol.

Of course it would be end game tech tier in the Automation section.