Source
r/Oxygennotincluded•
thipp

A quick experiment on using pipe sensors

I wanted to use a gas thermo sensor to filter hot and cold gas coming in from one pipe (I'm pumping Hydrogen, some fresh and some already hot, into a thermo nullifier as fuel and as the coolant, and I want to choose which it should be used for). I couldn't find any help through a few google searches, so I did a quick experiment in sandbox and thought I'd share the results.

Here's the setup:

https://i.imgur.com/9QeBf0h.jpg

And the logic:

https://i.imgur.com/oloP6Tz.jpg

One side is BUFFER -> FILTER, the other is NOT -> BUFFER -> FILTER.

My main question, and what took me a decent bit of experimenting to figure out, is how long the buffer/filter timers should be. The buffer and filter should last one second for every pipe segment between the sensor and the shutoff. In this setup, the left two were 6s and the right two were 7s.

I had expected the buffer and filter should be one second longer than that, but I guess Klei intentionally made the pipe sensors have a hidden one-second delay already so you didn't have to fool with setting up filters and buffers if you just put one sensor in front of one shutoff. I'd assumed they would always be incorrect in that setup, but Klei was one step ahead of me.

Anyways, just thought I'd share this to hopefully spare someone else the trouble.

Posted Jul 17, 2018, 4:31 AM UTC

124
angpaur•

To make filter like this you need just one shut off and no gates at all.

Place sensor right before the shut off. Make the filtered out branch pipe to start from shut off input, not where the sensor is. This will work as long as you can support power. No power means filter failure so be aware.

3
thippOP•

I wanted to incorporate the pipe thermo sensor in with other logic (the pressure & temperature in the chamber), so I threw in this (admittedly very excessive) change.

Because why engineer it at all if you're not going to overengineer it?

2
Glaubox•

I will try this back home but i am pretty sure it doesnt work if you have gas flow interruptions.

To filter gas with pipe sensors i was just using a not gate with two gas shutoff :

It works fine if the gas you want to filter is rare in the pipe, if H is the gas you want to filter and O the ignored gas, this setup works if you have this flow pattern :

OOOOHOOO

But fail if you have OOOHHOO for example. One way to avoid errors is to have a gas sampler that slow down the flow or to have cascaded filters with a back loop.

1
paoweeFFXIV•

I have something similar to this but on a much simpler scale. It's just a shutoff with a pipe sensor (element or thermo). For example When gas or water is cold it flows right through. When it's too hot it flows a different way. Sort of like an air or water filter but only needs 10 power.

1