The BR 3 version II is equipped with 2 VFDs to vary the drum speed and drum fan speed with potentiometers in the control panel, a vacuum pressure diffencial (in Pa), a converter, 2 thermocouples with double readout, a USB connection and it is prepared for Cropster or Artisan software.
This type of software is a datalogger that records the exhaust temperature ‘air flow’ (ET), the bean temperature (BT), the Rate-of-Rise (RoR) and the roasting curves.
However, to be able to repeat these records in the next roast you will have to control it manually.
The main advantages of having the variation in the drum and drum fan is to have more control and flexibility during the roasting process and the possibility of having a better roasting curve for the different coffee origins. In addition, you will also save energy, approximately 30%.
The variators allow a smoother start of the motors, ensuring their longevity and shortening the duration of routine mechanical maintenance.