A water level gauge is an instrument used to automatically measure and record the water level of rivers, lakes, reservoirs, irrigation canals and other water bodies. Also known as a liquid level gauge, it converts water level changes into measurable physical quantities through various sensors for monitoring and recording purposes.

• Radar water level gauge: Uses microwave signals to measure distance to water surface by calculating signal round-trip time
• Ultrasonic water level gauge: Measures distance using ultrasonic pulses without contacting water surface, suitable for various environments

• Water conservancy projects: Reservoir, dam, river, and lake monitoring for water resource management and flood control
• Industrial production: Liquid level monitoring in chemical, power, and food processing industries for process safety
• Environmental monitoring: Groundwater, wetland, and ocean level changes for ecological research
• Shipping management: Waterway depth measurement and lock water level control for navigation safety
• Municipal engineering: Urban water supply and drainage system monitoring to prevent waterlogging

• Select open, unobstructed positions away from bridges, trees, or buildings
• Install at stable shore positions considering full water level change range
• Ensure proper antenna height above water surface to avoid measurement interference
• Use sturdy brackets or wall mounts according to installation instructions
• Implement proper cable waterproofing and grounding measures

• Choose calm water surfaces without wave or flow interference
• Install transducer perpendicular to water surface for optimal accuracy
• Secure with brackets or flange connections to prevent movement
• Apply waterproof treatment to all interfaces and cable connections
• Calibrate measurement parameters and verify accuracy after installation