Hall effect liquid level sensors offer accurate and non-contact detection of fluid levels in tanks and containers. These sensors use magnetic floats to trigger Hall effect switches, ensuring reliable performance in water, oil, fuel, and chemical monitoring.
Why Choose a Hall Effect Level Sensor?
- Non-contact and wear-free sensing
- Resistant to corrosion and harsh liquids
- Compact and sealed for waterproof applications
- Works well in horizontal and vertical installations
Common Types of Hall Effect Liquid Level Sensors
- Hall effect water level sensor – Used in RO systems, water tanks, and HVAC
- Non contact hall effect liquid level sensor – Ideal for sealed containers
- Magnetic float level sensor hall effect – Uses a magnet-embedded float and internal Hall switch
Applications
- Medical fluid management systems
- Industrial chemical tank monitoring
- Fuel tank level detection in vehicles
- Smart water dispensers and humidifiers
How It Works
A magnetic float rises or falls with the liquid level. As it passes over the Hall effect sensor, the magnetic field activates the sensor, generating a digital or analog signal. This non-mechanical solution eliminates wear and ensures long-term stability.

Figure: Operation of a magnetic float Hall effect liquid level sensor
Recommended Hall Effect Liquid Level Sensors

Hall Effect Water Level Sensor
Compact waterproof sensor for home appliances and HVAC water level detection.
Related Resources
FAQs
Can Hall effect sensors detect fluid levels without touching the liquid?
Yes. Non-contact Hall effect level sensors use magnetic floats to detect level changes without direct contact with the fluid.
Are Hall effect level sensors waterproof?
Most models are IP67-rated or fully sealed, making them ideal for wet or submerged environments.
Where are these sensors typically used?
They’re widely used in medical devices, water dispensers, fuel tanks, industrial automation, and HVAC systems.