The advancement of a technology lies in its underlying principles. Why is Shenzhen Singotech Technology Co., Ltd. confident that the non-contact capacitive principle is the superior solution for coffee machine level sensing? Let's look beyond the jargon and find out.Sensing Through the Wall: The Basic Principle of Capacitive SensingSingotech's sensor contains a precise capacitance detection circuit. When its probe is attached to the outside wall of the coffee machine's water tank (typically made of PP, AS, or other plastics), the probe, tank wall, and the substance inside (air or water) together form a capacitive system.Accurately Judging Water Level Change:
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Low Level (Empty Tank): The space inside the tank opposite the probe is filled with air. Air has a very low dielectric constant, so the system's capacitance value (C1) is small.
2.
Water Reaches Detection Point: When water rises to the height of the sensor probe, water (with a much higher dielectric constant than air) replaces the air. This causes the system's capacitance value to jump significantly to a higher value (C2).
3.
Intelligent Chip Trigger: The sensor's internal chip monitors this capacitance in real-time. Upon detecting the change from C1 to C2, it immediately determines "water present" and sends a clear switch signal to the coffee machine's main board.
Singotech's Technical Essence:
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Specific Calibration: We precisely calibrate our sensors for the common plastic tank materials and the dielectric constant of water, ensuring sensitive and accurate triggering.
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Anti-Interference Design: Effectively distinguishes real level changes from interference caused by ambient temperature or humidity variations, preventing false triggers.
ConclusionThe non-contact capacitive principle employed by Shenzhen Singotech Technology Co., Ltd. is a smarter, more elegant solution. It replaces mechanical movement with electronic signals, achieving reliability and precision on a higher level.
