Submersible liquid level sensor

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The WAD100 Radar water level sensor is a 76–81 GHz FMCW radar product designed for continuous liquid level monitoring in applications such as rivers, reservoirs, underground pipe networks, manholes, and industrial tanks.

It features a bracket-mounted design that eliminates the need for on-site wiring, ensuring easy installation. Powered by a proprietary CMOS millimeter-wave RF chip and featuring a 5 GHz operating bandwidth combined with a narrow 6° beam angle, the device achieves a measurement accuracy of ±1 mm, a dead zone of less than 10 cm, and a measurement range of 0.1 m to 65 m. Its low-power design ensures a service life of over three years, while its IP67 protection rating allows it to withstand harsh outdoor environments. It supports RS485 (Modbus-RTU) communication and configurable high/low water level alarms, facilitating seamless integration into existing monitoring systems.

Advantages of the Radar water level sensor

This level meter utilizes a proprietary CMOS millimeter-wave RF chip to achieve a more compact RF architecture, a higher signal-to-noise ratio, and a smaller dead zone.

The 5 GHz operating bandwidth provides superior measurement resolution and accuracy.

The narrow 6° antenna beam angle minimizes interference from the installation environment, simplifying the installation process.

Features an integrated lens design and a compact form factor.

Low-power operation ensures a service life exceeding three years.

Features of the Radar water level sensor

Operating in the 76–81 GHz frequency band, the Radar water level sensor offers higher bandwidth and superior signal resolution, maintaining stable measurement performance even in complex operating environments.

It boasts a maximum measurement range of 35 m and a dead zone of less than 10 cm, making it suitable for various short-to-medium-range liquid level monitoring needs.

Bracket-based mounting eliminates the need for on-site wiring, making installation more convenient.

Radar water level sensor Specifications

Transmission frequency	76GHz~81GHz
measuring range	0.1 m ~65m
measurement accuracy	±1mm
Beam angle	6°
Power supply range	9~36 VDC
Communication method	RS485
working temperature	-40~85℃
Shell material	PP
Antenna type	Lens antenna
Recommended cables	7*0.3mm²
Protection level	IP67
Installation method	Bracket/Thread

Installation Guidelines

During installation, the WAD100 radar antenna must be aligned vertically with the liquid surface to ensure stable echo signal return. Any deviation in the installation angle can lead to signal attenuation and reduced measurement accuracy; therefore, vertical installation is essential for ensuring measurement stability. When selecting an installation location, avoid significant obstructions within the beam path-such as tank walls, mounting brackets, or riverbank slopes-to prevent false echoes. For applications in wells or vessels, it is recommended to install the device in the center and maintain a distance of at least 20 cm from the sidewalls to minimize reflection interference.

Application Areas for Radar Water Level Meters

The WAD100 radar water level meter is widely used in reservoir level monitoring, river hydrological monitoring, liquid level control in sewage treatment systems, industrial storage tank level measurement, and smart agricultural water resource management. The device maintains stable operation even in complex environments, making it suitable for long-term online monitoring and remote data acquisition systems.

Water Level Sensor 11