Wholesale Float-Operated Water Level Gauge Manufacturer and Supplier

Float-Operated Water Level Gauge

FS-LDSW-001 Float-Operated Water Level Gauge is a digital sensor integrating mechanical and electrical technologies. It converts the angular displacement of the output shaft into digital signals, enabling high-precision measurement of water level and determination of absolute position. The device features a power-off memory function.

Its working principle is as follows: the measuring wheel of the water level sensor is mounted on the encoder input shaft. A steel wire rope connects the float at one end and a counterweight at the other, winding around the measuring wheel. When the water level changes, the float rises or falls accordingly, driving the wire rope and rotating the measuring wheel. The encoder then outputs real-time water level values.

The device is widely used for water level monitoring in rivers, lakes, reservoirs, ship locks, hydropower stations, hydrological stations, water treatment plants, and petrochemical facilities, as well as for both surface water and groundwater level measurement.

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1.Technical Specifications

Basic Specifications
Item	Description
Measuring Range	0-80m
Water Level Change Rate	< 100 cm/min
Resolution	1cm
Measuring Wheel Starting Torque	< 100g·cm（0.0098N·m）
Measurement Accuracy	≤±2cm or 0.2%F·S
Display	Decimal Mechanical Counter
Mechanical Specifications
Item	Description
Measuring Wheel Working Circumference	32cm
Measuring Cable	Φ0.8mm Plastic-Coated Stainless Steel Cable
Float Diameter	10-15cm Optional
Electrical Specifications
Item	Description
Output Format	Contact On/Off Output
Contact Resistance	≤0.5 Ω
Insulation Resistance	≥10MΩ

Communication Interface (Optional)
Item	Description
Interface	RS485 Interface（MODBUS-RTU Protocol）
	Gray Code Output
	4-20mA Analog Current Output
Environmental Parameters
Item	Description
Environmental Specifications	-40℃~85℃
Relative Humidity	≤95% (40℃)
Dimensions	132×132×115
Power Supply Voltage	< 100g·cm（0.0098N·m）
Accuracy	12VDC

2.Product Features

Reliable Water Level Measurement

The Float-Operated Water Level Gauge adopts a float-based mechanical measurement principle to accurately monitor water level changes, providing reliable and stable data for hydrological and water conservancy applications.

High Stability & Long-Term Operation

With a simple and robust mechanical structure, the system offers excellent durability and long service life, making it suitable for long-term outdoor monitoring.

Accurate Water Level Tracking

The float mechanism responds sensitively to water level variations, enabling continuous and accurate observation of water level fluctuations.

Strong Environmental Adaptability

Designed for reservoirs, rivers, channels, and hydraulic structures, the gauge maintains stable performance under different weather and operating conditions.

Simple Structure & Easy Maintenance

The mechanical design reduces system complexity, requiring minimal maintenance and providing convenient installation and operation.

Integration with Automatic Monitoring Systems

Can be combined with data acquisition units, RTU terminals, and telemetry platforms to achieve remote water level monitoring and automated management.

3.Product Uses

Measure real-time water level changes in rivers, lakes, reservoirs, and channels.
Monitor water level fluctuations for hydrological observation.
Provide reliable water level data for reservoir and water resource management.
Support flood monitoring and water level warning systems.
Record long-term water level variations for analysis and research.
Integrate with telemetry systems for unattended monitoring.
Assist in the operation and management of hydraulic facilities.