The CL-305 capacitive liquid sensor is a compact, high-reliability liquid level detection device tailor-made for home appliances and commercial electrical equipment. Adopting advanced capacitive sensing technology and low-power integrated chip design, it achieves non-contact, high-sensitivity real-time monitoring of various liquid media. Unlike traditional float and mechanical level switches, this sensor has no movable mechanical parts, effectively avoiding jamming, aging and failure issues during long-term frequent operation. Featuring mini size, low power consumption, strong anti-interference performance and high detection accuracy, it fully adapts to the compact internal structure and long-term continuous working requirements of household and commercial appliances. Supporting standard mass supply and personalized customized services, it is an ideal stable and cost-effective liquid level monitoring solution for various civil and commercial electrical equipment.
Product Features
High Sensitivity & Accurate Detection
Equipped with a high-sensitivity capacitive induction chip and intelligent signal filtering algorithm, the sensor can accurately identify tiny liquid level changes. It supports stable detection of water, purified water, weak corrosive liquid and other common media, with accurate switching signals and no false triggering. Built-in temperature and humidity compensation function ensures consistent detection performance in complex indoor and environmental temperature changes.
Mini Compact Size & Low Power Consumption
Adopting integrated miniaturized structural design, the sensor occupies a small installation space and is perfectly compatible with the narrow internal layout of home appliances and commercial electrical equipment. With ultra-low power circuit design, it effectively reduces equipment energy consumption, meets the long-term standby and continuous operation needs of electrical appliances, and improves the overall energy-saving performance of equipment.
Wear-Free Structure & Ultra-Long Service Life
Fully electronic non-contact detection structure eliminates mechanical moving parts such as floating balls and connecting rods. It is free from mechanical wear, liquid scaling adhesion and structural fatigue failure caused by frequent liquid level fluctuations. It can adapt to long-term repeated start-stop operation of household and commercial equipment, greatly reducing equipment failure rate and after-sales maintenance costs.
Strong Compatibility & High Safety
The whole machine adopts food-grade safe materials and fully sealed insulation design, with waterproof, dustproof and leakage-proof performance, meeting the safety standards of household and commercial electrical appliances. It supports multiple universal signal outputs, which can be seamlessly matched with mainstream appliance control boards and intelligent control systems, featuring strong anti-electromagnetic interference ability and stable operation in complex electrical working environments.
Working Principle
The CL-305 capacitive liquid sensor works based on the principle of dielectric constant difference induction. The sensor's built-in induction electrode forms a stable electric field with the equipment shell or reference electrode. Air and liquid have completely different dielectric constants; when the liquid level rises to contact the sensor induction area, the overall capacitance value of the sensor changes instantly and linearly. The high-precision intelligent chip captures subtle capacitance variations in real time, converts liquid level height changes into standard switch or analog signals, and outputs accurate level judgment data. This non-contact induction method realizes real-time, stable and continuous liquid level monitoring without direct contact with the liquid medium, avoiding medium pollution and sensor corrosion.
Product Parameters
|
Parameter Item |
Technical Specification |
|
Product Model |
CL-305 |
|
Detection Principle |
Capacitive Dielectric Induction |
|
Detection Method |
Non-contact Liquid Level Detection |
|
Output Signal |
NPN/PNP Switch / 0-5V Analog (optional) |
|
Working Voltage |
DC 5V - 12V |
|
Detection Sensitivity |
Adjustable |
|
Response Time |
≤50ms |
|
Working Temperature |
-20℃ ~ +70℃ |
|
Protection Grade |
IP65 |
|
Shell Material |
Food-grade ABS / Customizable |
|
Applicable Media |
Tap water, purified water, weak alkaline liquid and other common household liquids |
|
Service Life |
≥80,000 working cycles |
Application Fields
The CL-305 capacitive liquid sensor is specially optimized for home appliances and commercial electrical equipment, with strong industry pertinence and wide applicability. In household appliances, it is widely used in water purifiers, humidifiers, air conditioners, water heaters, dishwashers, washing machines and other smart home devices, realizing automatic water level monitoring, water shortage protection and overflow prevention functions. In commercial electrical appliances, it perfectly matches commercial water dispensers, industrial humidifiers, commercial dishwashers, beverage equipment, refrigeration water tanks and other commercial equipment. It provides stable and reliable liquid level detection signals for intelligent water supply, safety protection and automatic control of electrical equipment, effectively avoiding equipment failure and safety hazards caused by abnormal liquid levels.
Installation Method
The CL-305 capacitive liquid sensor supports diversified flexible installation methods, adapting to various internal structural designs of household and commercial electrical appliances. The mainstream methods include external wall-mounted installation and built-in fixed installation. For non-metallic water tanks, the sensor can be directly attached to the outer wall of the tank for non-contact detection without punching or contacting the liquid, ensuring clean and safe liquid environment. For built-in installation scenarios, it can be fixed through reserved mounting holes or customized brackets, featuring simple operation and firm fixation. The whole installation process requires no complicated wiring and equipment modification. After fixing and simple sensitivity debugging, it can be put into use quickly, meeting the batch assembly and after-sales replacement needs of electrical equipment manufacturers.
Customizable Options
We provide targeted personalized customization services for home and commercial appliance scenarios to meet customers' differentiated product matching needs:
Structural & Size Customization
Customize sensor appearance size, fixing bracket shape and mounting hole position according to the internal space and structural layout of different electrical appliances, realizing perfect fitting assembly.
Signal & Parameter Customization
Customize output signal type, detection sensitivity and response speed, and adjust working voltage range to match the exclusive control system of different brands of electrical equipment.
Material & Process Customization
Upgrade food-grade antibacterial materials, high-temperature resistant materials or waterproof and corrosion-resistant materials, and customize special surface processes to adapt to high-temperature, humid and long-term use environments of electrical appliances.
Functional Customization
Add anti-overflow alarm, low-water automatic power-off, signal delay and other extended functions according to equipment functional requirements.
Why Choose Us
Scenario-Oriented Professional Performance
Tailor-made for home and commercial electrical appliances, the sensor features mini size, low power consumption, high safety and strong stability. It perfectly adapts to the long-term frequent working state of electrical equipment, effectively reducing product failure rate and improving user experience of terminal equipment.
Diversified Customization & Strong Matching
With rich supporting experience in the electrical appliance industry, we can accurately customize products according to customers' equipment design, realizing seamless fitting assembly and adaptive signal matching, solving various matching problems of traditional sensors.
Stable Batch Quality & Cost-Effective
Standardized automated production ensures consistent batch product quality. Optimized circuit and structural design reduces production costs, providing customers with high-quality and cost-effective supporting sensors, helping customers reduce terminal product costs and improve market competitiveness.
Full-Link Professional Service
We provide pre-sales scheme customization, in-sales sample testing, mass production delivery and after-sales technical guidance one-stop service. Professional technical and customer service teams respond quickly to solve customers' product matching and use problems, ensuring worry-free cooperation.
FAQ
Q: What liquid media is the CL-305 capacitive liquid sensor suitable for?
A: It is mainly suitable for non-conductive and weakly conductive common liquid media, including tap water, purified water, mineral water and other household liquids. It is widely applicable to daily liquid level monitoring of various home and commercial electrical appliances.
Q: Can the sensor work stably in humid indoor environments?
A: Yes. The whole machine adopts fully sealed waterproof and moisture-proof design with IP65 protection grade. It can resist humid environment interference and water vapor erosion, maintaining stable and accurate detection performance in long-term indoor humid working conditions.
Q: Is the sensor easy to install for mass appliance assembly?
A: Very easy. The sensor supports wall-mounted and built-in fixed installation, with simple structure and no complicated wiring and debugging. It is suitable for rapid assembly line operation of electrical appliance manufacturers, and supports personalized installation structure customization.
Q: Can the detection sensitivity and output signal be customized?
A: Yes. We support full customization of detection sensitivity, response time, output signal mode and voltage parameters, which can be perfectly matched with different types of household and commercial electrical control systems.
Q: Does the sensor have safety protection functions for electrical appliances?
A: Absolutely. The sensor has stable liquid level monitoring performance, which can realize automatic water shortage power-off, overflow prevention and early warning functions for electrical equipment, effectively avoiding safety hazards such as dry burning and liquid leakage, and improving the overall safety of terminal electrical appliances.
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