Is there a way to get the type of grid?

Hey guys,

I'm doing a script to control the oxygen, airlocks and all that good stuff. I would like to find out if the grid is a small one, for example, because of the capacity of the oxygen tank. It would be nice so I wouldn't have to change the capacity in the code when using it in different grids, the constructor would set it on a variable or something like that. Thanks in advance for any help and sorry for my bad English.

Since I'm already asking things, I can get the Max Output of...

Is there a way to get the type of grid?