
Float Water Level Sensor for River, Reservoir & Flood Monitoring Systems
Reliable Digital Water Level Measurement Solution for Hydrological Stations, River Monitoring and IoT Telemetry Networks
Product Introduction
The KH.WFH Float Water Level Sensor is a reliable hydrological monitoring device designed for continuous water level measurement in rivers, reservoirs, lakes, and natural water environments.
Using a proven mechanical float measurement principle combined with electronic signal processing, the sensor converts vertical float movement into stable digital signals for real-time water level monitoring.
The float water level gauge provides long-term reliable operation for hydrological observation networks, flood early warning systems, and remote water monitoring applications where stability and durability are essential.
It is widely applied in:
- River water level monitoring
- Reservoir water level management
- Lake and natural water body observation
- Flood early warning systems
- Pumping station and drainage monitoring
- IoT-based hydrological monitoring networks
The KH.WFH provides dependable water level data for water resource management, environmental observation, and flood prevention applications.
How It Works
The KH.WFH uses a mechanical float measurement principle.
As the water level changes, the float moves vertically according to the water surface position. The mechanical displacement is converted into digital electrical signals through the sensing mechanism and transmitted to monitoring systems.
This measurement method provides:
- Stable long-term water level measurement
- Simple and reliable sensing principle
- Proven performance in natural water environments
- Continuous monitoring capability for remote stations
Key Features
Stable Mechanical and Digital Hybrid Design
Combines a proven float mechanism with electronic signal processing to provide reliable long-term water level monitoring.
High-Accuracy Water Level Measurement
Provides precise water level measurement suitable for hydrological observation stations, flood monitoring systems, and water resource management applications.
Power-Off Memory Function
Maintains measurement information during power interruptions, helping ensure data continuity in critical monitoring environments.
Flexible Signal Output Options
Supports integration with different monitoring systems through:
- Parallel Gray Code
- SSI Gray Code
- 4–20mA analog output
- RS485 communication
Durable Outdoor Construction
Corrosion-resistant materials and stainless steel components ensure stable operation in outdoor hydrological environments.
Designed for Long-Term Deployment
Suitable for continuous operation in remote and unattended hydrological monitoring stations requiring reliable data acquisition.
Application Scenarios
River Water Level Monitoring
Provides continuous river level observation for hydrological stations, watershed monitoring, and flood early warning systems.
Reservoir Water Level Management
Supports reservoir operation, water storage monitoring, and flood risk assessment.
Lake and Natural Water Body Monitoring
Provides stable long-term water level data for environmental research and hydrological observation.
Pumping Station and Drainage Monitoring
Used in stormwater management systems, drainage infrastructure, and flood prevention networks.
IoT Hydrological Monitoring Networks
Integrated with telemetry systems, SCADA platforms, and smart water monitoring networks for remote data management.
Technical Specifications
| Parameter | Specification |
|---|---|
| Measuring Range | 0–5 m, 10 m, 20 m, 40 m, 80 m (customizable) |
| Water Level Change Rate | <100 cm/min |
| Resolution | 1 cm |
| Starting Torque of Measuring Wheel | <100 g·cm (0.0098 N·m) |
| Measurement Accuracy | ≤±2 cm or 0.2% FS |
| Display Monitor | Mechanical decimal counter |
| Working Circumference of Wheel | 32 cm |
| Counterweight Diameter | φ20 mm |
| Measuring Cable | φ0.8 mm stainless steel cable |
| Float Diameter | φ50 mm, φ100 mm, φ150 mm optional |
| Contact Resistance | ≤0.5 Ω |
| Insulation Resistance | ≥10 MΩ |
| Output Signals | Parallel Gray code, 4–20 mA analog, RS485 serial, SSI Gray code (based on encoder selection) |
| Ambient Temperature | −30℃ ~ +85℃ |
| Relative Humidity | ≤95% RH (at 40℃) |
| Reliability Index | MTBF ≥ 25,000 hours |
| Operating Voltage | Matches selected encoder |

