sometimes someone asks what are combinators good for, so i build also some nice little thingy.
Oxygen and Nitrogen Gas in Angel' Petrochem mod is very cheap but both gases are under some circumstances not used equally.
So i used an arithmetic combinator, which takes Nitrogen Gas times -1 and outputs the amount as Oxygen Gas.
Oxygen Gas tank and the calculated value combined over green wire controls two pumps which feed flare stacks.
If the result is smaller then -10, Nitrogen Gas is flared, if the value is larger then 10, Oxygen Gas is flared and both tanks keep nearly equalso that no chemical plant get stuck.
Picture
Greetings steinio