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Float Switch: A Mechanical Relic Dependent on Buoyancy The float switch operates on a simple, age-old principle: a float containing a permanent magnet moves up and down with the liquid level. The float surrounds a stem containing a reed switch. As the float approaches or moves away from the reed switch, the magnetic field causes the reed contacts to close or open, outputting an on/off signal. •
Core Characteristic: Mechanical contact, physical movement. Its operation inherently involves friction and wear of mechanical parts.
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XINGKECHUANG Non-Contact Sensor: An Electronic Revolution Based on Capacitance The capacitive non-contact level sensor from Shenzhen XINGKECHUANG Technology Co., Ltd. represents a fundamentally different approach. Its core is the principle of capacitive sensing: the sensor probe acts as one electrode, and the tank wall or water medium acts as the other, forming a tiny "parasitic capacitance." When the liquid level changes, the dielectric constant of this capacitive field changes. A high-precision chip inside the sensor detects this minute change and converts it into a switch signal. •
Core Characteristic: Electric field sensing, all-solid-state, zero contact. No moving parts, enabling "through-air" detection.
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Float Switch Weakness: Its mechanical structure is its Achilles' heel. The reed switch has a limited operational life (e.g., several hundred thousand cycles). Continuous friction between the float and stem causes wear and potential jamming. In water with scale or impurities, the risk of jamming is high, resulting in a relatively short Mean Time Between Failures (MTBF). •
XINGKECHUANG Sensor Advantage: With no moving parts, its lifespan depends only on electronic component aging, theoretically offering unlimited actuations. MTBF can reach tens of thousands or even hundreds of thousands of hours, far exceeding mechanical solutions, drastically reducing equipment failure rates.
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Float Switch Risk: The complex assembly of float, stem, and bushing creates numerous cleaning dead zones, ideal for harboring bacteria and biofilm, becoming a "sanitation black hole" inside the purifier. •
XINGKECHUANG Sensor Assurance: Our sensors enable complete isolation via external tank mounting. Even for internal probes, the surface is smooth and seamless, using food-grade sealing materials, easy to clean and sterilize, fully meeting the stringent hygiene standards of high-end water purifiers.
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Float Switch Limitations: Installation requires ensuring vertical alignment, drilling tank holes, and ensuring sealing. The process is cumbersome and skill-dependent. Control points are fixed and difficult to adjust. •
XINGKECHUANG Sensor Flexibility: Installation is incredibly simple. For non-metallic tanks, use external clamp-on sensors; for metallic tanks, simply adhere the sensor. Placement is flexible, requiring no tank modification. Our sensors also easily facilitate multi-point level control and continuous monitoring.
