Better intrinsic safety is desired.
Power-enable relays controlled by the host (Raspberry Pi) will enable remote shutdown when thermal runaway is detected and can't be overcome (e.g. N/O solid state relays in a failed-closed scenario).
Power-up/down workflows will save energy.
Dual temperature sensors with comparative capabilities and diverse pathways should be used on heat sources that are not thermally fused nor controlled by solid state relays.
Better intrinsic safety is desired. Power-enable relays controlled by the host (Raspberry Pi) will enable remote shutdown when thermal runaway is detected and can't be overcome (e.g. N/O solid state relays in a failed-closed scenario). Power-up/down workflows will save energy. Dual temperature sensors with comparative capabilities and diverse pathways should be used on heat sources that are not thermally fused nor controlled by solid state relays.