Coffee Machine Low-Water Preheat Dry-Boil Prevention? Capacitive Non-Contact Level Sensor Early Detection

Dry-boil prevention isn't about stopping "when there's no water" — it's about cutting heating in advance at the low water point to keep the boiler in a wet state. Float low-point accuracy is poor; often the heating tube truly runs dry before action is taken.

The XKC-Y29A low-point probe mounts 5 mm above the bottom side. The capacitive principle detects when water level drops to this point — capacitance drops beyond the threshold and the relay cuts immediately. Steam condensation does not cause false triggers. Shenzhen Xingkechuang Technology Co., Ltd.'s solution achieves low-point repeat accuracy of ±3 mm, clearing dry-boil related customer complaints.