Hengstler grado 921 1 / 4 DIN Temperature Controllers – Automate Control
Engineering Ltd.

- Available as two-point, three-point, or continuous controller
- Easy adjustment of the PID control parameters through Preliminary
adjustment (pre-
tune) and self-adjustment (self-tuned facilities)
- Very easy set point adjustment directly through front panel keys
- Configurable universal input for thermocouples, resistance thermometer
PT 100, or
freely scaleable analogue input (current/voltage)
- 3 outputs (discontinuous or continuous) for control, as linear output for
measured or
set point value, or as alarm output
- Two-line high-luminosity LED display
- Permanent set point and actual value display
- 2 software alarms, which can be allocated to the outputs
- 4 types of alarm: closed loop alarm, deviation alarm, band alarm and
absolute alarm
- Adjustable digital input filter
- 2 externally selectable set point values
- Easy adjustment of control parameters with interface through PC
- IP 65 system of water protection