Product Manual (pdf)

Product Introduction

The KH.WLX Non-Contact FMCW Radar Water Level Sensor is a high-precision hydrological monitoring device designed for continuous real-time water level measurement in rivers, lakes, reservoirs, canals, and urban drainage systems.

Using advanced FMCW (Frequency Modulated Continuous Wave) radar technology, the sensor measures water level without physical contact, making it highly reliable for long-term deployment in harsh and unstable environments such as flood-prone rivers, stormwater systems, and smart city drainage networks.

It is widely used in flood early warning systems, smart city waterlogging control, river hydrology monitoring, and water resource management platforms, providing stable, maintenance-free, and highly accurate data for IoT-based water monitoring networks.

How It Works

The radar continuously emits frequency-modulated electromagnetic waves toward the water surface.
The system calculates water level by analyzing the frequency shift of the reflected signal.

This non-contact measurement method ensures:

• No physical contact with water
• No corrosion or sensor fouling
• No performance degradation due to sediment or debris

Key Features

FMCW Radar Non-Contact Measurement

Advanced radar technology provides accurate water level detection without immersion, eliminating maintenance issues common in traditional pressure or float sensors.

Ultra-High Precision & Fast Response

Measurement accuracy up to ±2 mm, with 1 mm resolution and response time as fast as 100 ms, suitable for real-time flood monitoring systems.

Stable Operation in Harsh Conditions

Reliable performance even under:

• Heavy rainfall
• Fog and humidity
• Strong waves or turbulence
• Floating debris and sediment
• Polluted or urban drainage water

Compact & Flexible Installation

Ideal for deployment on:

• Bridges and riverbanks
• Urban drainage channels
• Culverts and stormwater outlets
• Narrow or hard-to-access hydrological sites

Industrial-Grade Protection Design

IP68-rated housing with anti-condensation structure, lightning protection, and outdoor durability for long-term unattended operation.

Low Power Consumption for IoT Systems

Optimized for solar-powered hydrological stations with intelligent low-power standby mode.

Strong Anti-Interference Capability

Stable operation in complex electromagnetic environments such as urban infrastructure and industrial zones.

Flexible Communication Interfaces

Supports RS485 Modbus/ASCII protocol, enabling seamless integration with:

• IoT hydrological monitoring platforms
• SCADA systems
• Remote telemetry stations

Multi-Frequency Radar Options

Available in 24 GHz / 60 GHz / 80 GHz versions, suitable for different measurement ranges and installation heights.

Application Scenarios

River & Reservoir Hydrological Monitoring

Real-time water level tracking for water resource management and environmental observation.

Urban Flood Control & Smart City Systems

Core sensor for sponge city drainage systems, urban waterlogging monitoring, and flood prevention networks.

Stormwater & Drainage Pipeline Monitoring

Used in underground drainage networks and sewer systems for flood risk control.

Mountain Flood Early Warning Systems

Provides rapid response data for flash flood detection and disaster prevention.

Water Infrastructure & Utility Systems

Supports pumping stations, water supply networks, and wastewater treatment monitoring.

Technical Specifications