Electrode-type water level sensor

Main Features:

This series of electrode-type water level sensors is a contact‑type liquid‑level detection device that operates on the principle of liquid conductivity. It consists of a bimetallic probe and an insulating housing. When the probe comes into contact with the liquid, the liquid’s conductivity completes a circuit between the two probes, generating a signal indicating the presence of liquid. As the liquid level drops and the probe exits the liquid, the circuit opens and the signal disappears, enabling real‑time monitoring of the liquid level. The sensor features a simple, reliable design with no moving mechanical parts, making it resistant to clogging and wear. It is widely used in various water‑treatment devices, household appliances, and industrial systems for liquid‑level monitoring, dry‑run protection, and overflow alarm applications.

Enquiry

Category:

Water Flow & Water Level Sensors

Keyword: Electrode-type water level sensor

DETAILS DOWNLOAD

Key Features

No mechanical moving parts : Pure conductive detection principle; no float, impeller, or other wear-prone components; resistant to clogging and jamming; long service life; maintenance-free.
Food-grade safe material The insulating housing is made of food-grade engineering plastic, and the probe is crafted from corrosion-resistant metal, meeting potable water contact safety standards and ensuring compatibility with drinking water equipment.
Simple structure, easy installation. Probe‑type integrated design allows direct insertion into liquid containers, eliminating the need for complex installation, saving space, and accommodating tight internal spaces in various devices.
Highly reliable corrosion resistance The probe is made of corrosion-resistant metal, suitable for use with clean water and mildly corrosive liquids. It resists rusting and corrosion even after prolonged immersion, ensuring a long service life.
Low-power, stable operation : Passive / low-power detection method—no complex circuitry required, compatible with battery-powered or low-voltage control devices, and featuring extremely low standby power consumption.
Easy-to-integrate low-cost solution : Signal acquisition can be achieved with a simple circuit, eliminating the need for complex signal conditioning; it can be directly connected to an MCU or PLC control system for rapid integration.
Environmental Compliance Support : Compliant with RoHS and REACH environmental standards, lead-free manufacturing, and meets global market regulatory requirements.

Typical application scenarios

Water purification / drinking water equipment sector : Water level detection and low-water protection for water purifiers, water dispensers, direct-drinking water dispensers, and commercial water dispensers.
Home appliance sector : Water level monitoring and dry‑boil protection for electric water heaters, humidifiers, steam equipment, and coffee machines.
Smart home sector : Water level monitoring for smart toilets, humidifiers, and small-scale drinking water devices.
Industrial control field : Small liquid storage tanks, cleaning equipment, and cooling systems—level monitoring and overflow/dry‑run alarms.
Other scenarios : Liquid level detection for small liquid containers, dry‑burn protection for equipment, and water level status feedback.

Technical Specifications

Detection principle: Liquid conductivity measurement (two-point electrode)
Insulating housing material: Food-grade engineering plastic (PP/ABS optional)
Probe material: Stainless steel / Nickel-plated copper (corrosion-resistant option available)
Probe Spacing: Standard fixed spacing (customizable upon request)
Probe length: Standard specification (customizable to meet installation depth requirements)
Operating voltage: DC 5–24 V (compatible with various control circuits)
Operating current: ≤10 mA (low-power design)
Output signal: discrete signal (on/off state)
Operating temperature: 0°C to +60°C (for liquid media)
Liquid compatibility: clean water, weakly conductive liquids (non-insulating fluids)
Interface type: standard wire harness + connector (customizable terminal types)
Environmental Compliance: Compliant with RoHS and REACH standards; food-grade contact materials are compliant.

Customized Services

We offer end-to-end customized services and, based on your application scenarios and design requirements, can provide the following tailored solutions:

Customizable probe length, spacing, and material to accommodate varying container depths and liquid media.
Targeted optimization of insulating housing material and dimensions to match the internal installation space and environmental requirements of the equipment.
Customizable harness lengths and connector type compatibility, supporting direct interface integration with customer equipment.
We offer mass production and rapid delivery services, along with comprehensive technical support, product selection solutions, and test reports, helping customers efficiently develop equipment-level‑monitoring functionality.

ENQUIRY

If you have any good suggestions and comments on our company, or want to consult our products, please fill in the form below, and we will contact you at the first time!