Geyser sensors localization?

[Argelle]

To my surprise, on this run, gas chamber get quite overpressurized (15 000 g and rising). it's quite nice, because I have not reach plastic and high pressure vent yet. My guess is that the little bit of polluted oxygen (16g) on top is sensing the geyser that atmosphere is below 5kg (or the tiles?).

My question is: do you know where the geyser is sensing to see if overpressured or not?

[mathmanican]

I spent a while testing this a few weeks ago, whens someone asked if it's possible to over pressurize a natural vent, like an electrolyzer.  Here's what I found, which may or may not be exactly what happens.

1. The vent outputs into a plus shaped region, similar to how pumps intake from a plus shaped region.  The vertical part of the plus is on the left side of the geyser, and the horizontal part is the second tile up. The plus is inside the box shown below.
   Spoiler

   

    

2. To output gas, at least one of these 5 valid spots must contain NG with less than 5kg pressure.  If you cover these 5 spots with anything else (tile, chlorine, carbon dioxide, etc., regardless of the amount), then no NG will come out. I was hoping I could use chlorine/carbon dioxide lock to get things going, but no success.  The chlorine/carbondioxide block the top spot of the cross in the picture below, preventing any NG from being ejected (the other 4 spots are covered by liquid and a tile).
   Spoiler

   
    

3. You can use the same trick used with the steam geyer to get a high pressure gas to fight with the NG at the top, or bottom, of the vent. So hydrogen or Carbon dioxide can make it easy to constantly keep things running. 
   Spoiler

   Start with hydrogen on the top, enough to fight with the NG.

   

    

   

   Alternately, put some carbon dioxide on the bottom.

   

    

I hope that helps.  By the way, the area that senses if the vent is overpressure to display an error message has nothing to do with the actual area where it outputs gas. I think this latter area is a box, just like the pumps. 

[mathmanican]

Tricking the vent with another gas to fight against the NG for tile space, or using a door pump.  Sounds like the same two things (exploits?) we use to get the steam turbine to work...  I'll probably just keep using door pumps to keep my NG vent going.