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Rail with conveyor rail thermal sensor becomes empty

  • Branch: Live Branch Version: Windows Pending

I have a volcano tamer that relies on conveyor rail thermal sensors to shut of a conveyor chute. I have noticed that the rail with the sensor sometimes remains empty even though it should allow items to pass over to it. My fix was adding a second sensor with a filter gate, however i noticed the same issue with the other sensor, although less frequent.

I have a feeling this has something to do with load sizes on the conveyor rails.

Here is my volcano tamer:



Steps to Reproduce

The way i encountered the bug is to have a thermal conveyor sensor controlling a conveyor chute.


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My guess would be that gold melts again when passing behind the gold volcano. Empty packets on the rail don't disappear, so there is nothing for the sensor to measure. And since there is no loop letting packets pass, it just gets stuck Even if there was a loop, you need to evacuate the whole line from time to time because very small packets picked up by the auto-sweeper, can't change temperature and end up clogging the loop.

I think I see no gold in this packet but I may be wrong

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Same issue here with cobalt/iron/aluminium volcanos, the reason is that sensor doesnt inherit temperature from atmosphere/rail/sensor while empty, but takes some weird value instead, like 200+ C. I also cant understand why are there empty cobalt packages on the rail, they are prety far from volcano base to melt, also surrounded with steam/tempshift plate. Attaching savefile with bug replica (watch ugholin volcanos).


The Death Spacerock.sav

Edited by Lanshir

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On 9/3/2022 at 7:36 PM, Lanshir said:

they are prety far from volcano base to melt

It's not too far. The volcano doesn't vent liquid metal from it's base but from one tile above on the middle. You have (I think..?) conveyor rails passing from there. The sensor can't sense anything on an empty rail.


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The value of the sensor is always the temperature of the last packet that did pass through the sensor, as long as no other packet passes the sensor it will remain on the temperature of the last packet, not the temperature of the rail or gasses around it.

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