The Fuji Electric PXF4ACC2-FVKA1 is a self-tuning 1/16 DIN (48 x 48mm) compact temperature and process controller with a 50ms sampling speed.
The 1/16 DIN (48 x 48mm) panel cutout is the standard footprint for compact controllers — it fits the same panel hole as hundreds of other 1/16 DIN units, so swapping an existing controller into this slot is straightforward. The self-tuning algorithm means the controller automatically adjusts PID parameters during startup, reducing commissioning time on processes where manual tuning would take multiple heat-cool cycles.