The miniature controller – just 65 × 8 × 14 mm3 – features two temperature monitoring inputs (per channel): the primary high resolution object sensor input can be configured to handle Pt100, Pt1000, or NTC probes; the auxiliary sink temperature input (NTCs only) allows for energy-efficient and optimized modeling and control of the Peltier element. Temperature precision and stability better than 0.01 °C are achieved (typ. 0.005°C) thanks to careful selection of key components as well as factory calibration. The TEC controller is driven by proven firmware, can operate as a stand-alone, script-controlled or remotely controlled device. It offers advanced features such as PID auto tuning, comprehensive status and error handling, lookup-table execution, numerous supervision and safety functionalities and firmware upgradeability. Configuration and control is over isolated USB, RS-485 or RS-232, parameters are saved into non-volatile Flash. Furthermore 4 digital, freely mappable I/O lines allow for hardware control or feedback (enable/interlock, all stable, etc.) or for the control of an external fan e.g. blowing over the Peltier setup heat sink. Also, it can directly drive certain OLED displays.
Miniature Precision TEC Controller
Addition to the popular portfolio of Peltier temperature controllers, the miniature “TEC-1091” controller. It delivers true bipolar ±4 A / ±19 V DC, resulting in a power density of >2 W/cm³.