Standard factory calibration method:
1.BT probe tip to spring distance: 35mm https://drive.google.com/file/d/1dVxNEHTFmvIHc7PvXUqacU7Epuzmo3XP/view?usp=sharing
2.Start preheating: Set Bean Temperature to 180°C - Drum to 100°C. Preheat for 10 minutes. During this time, adjust the ET probe depth so that ET reads 10°C lower than BT.https://drive.google.com/file/d/1ysPEE2Sj6ngdl_0SC2Ow20yT_bW3lKL1/view?usp=sharing
After 10 minutes, continue preheating for another 5 minutes and observe whether there are any significant changes in the BT and ET curves. (If there are no significant changes, the calibration is successful.)