The new digital temperature controller DPC III (photo) is optimally matched to trace-heating applications. It monitors measuring circuits on breaks, interruptions and short circuits of the sensor as well as on under- and over-range in order to guarantee process safety. The DPC III is integrated in a lock-in casing for TS 35 hat-profile rail. At the measuring input, a Pt 100 resistance thermometer and thermal elements can be connected. The controller is equipped with a load relay (16 A), for the two-position control; an alarm relay (8 A); a logical voltage output for the PID control; and two digital inputs. The device can be used as an on/off (two-position controller) or as a PID controller. — Bartec GmbH, Bad Mergentheim, Germany