The PXF4APA2-0V1A1 is a self-tuning 1/16 DIN (48 x 48 mm) compact temperature and process controller with a 50 ms sampling speed, per the datasheet. The 50 ms sampling rate means the controller updates its output every 50 milliseconds — fast enough for thermal processes with moderate dynamics, such as extrusion barrel zones or packaging seal bars, where a slower 100 ms or 250 ms controller would let temperature overshoot become visible on the trend.
The 1/16 DIN (48 x 48 mm) cutout matches the standard panel-mount footprint shared across most compact controllers. Panel depth behind the cutout is typically 80–100 mm, including the rear terminal block. Spring-cage or screw terminals accept 0.2–2.5 mm² wire; strip length of 8 mm avoids whiskers under the clamp.