






80GHz Mmwave Sensor 0.1-40m Water & Liquid Level Gauge
LDRR04B millimeter-wave radar is a radar specifically designed for hydrological detection.
This radar adopts FMCW mode, features a non-contact installation design, is compact in size, has a tight structure, high precision, low power consumption and strong anti-interference ability.
1. High Precision Measurement
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Accuracy: ±3mm
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Resolution: 1mm
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Range: 0.1 ~ 40m
2. Narrow Beam for Precise Targeting
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Beam width: ±3° (horizontal & vertical)
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Lens antenna provides superior focusing and minimizes interference
3. Ultra-Low Power Consumption
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Operating current: 25mA @ 12V
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Wide voltage range: 9–24V DC
4. Fast Startup & Configurable Output
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Startup time: 100ms (fastest)
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Refresh rate: 0.1 ~ 25 Fps (adjustable)
5. Robust Environmental Protection
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Operating temperature: -45°C to +85°C
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Waterproof rating: IP67 (default), IP68 (upgradeable with full potting)
Main Parameters
| Part number | LDRR04B |
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Measuring range
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0.1~40m
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| Resolution | 1mm |
| Beam width (-3dB) | Horizontal ±3°, Vertical ±3° |
| Measurement accuracy | ±3mm |
| Set-up time | 100ms |
| Weight | 212g |
| External dimensions (diameter x height) | 66×96 mm |
| Refresh rate | 0.1-25Fps |
| Emission Frequency | 77-81 GHz |
| Mains power supply | 9 V-24 V DC, typical 12V |
| Operating average current | 25 mA |
| Output Power (EIRP) | 13-20 dBm |
| Operating temperature range | -45℃~+85℃ |
| Output | RS485 |
| Baud rate | 115200 |
| Protocol | ASCII/Modbus |
Get Free Quote of 80GHz Mmwave Sensor 0.1-40m Water & Liquid Level Gauge
Application
It is applicable to water level monitoring in lakes, rivers, mountain flood warnings, reservoirs, sewage networks, etc.
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Lake & river water level monitoring
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Flash flood warning systems
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Reservoir & dam water level measurement
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Sewage network water level monitoring
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Industrial liquid level measurement (tanks, containers)
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Agricultural irrigation canal water level monitoring
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Bridge & tunnel drainage monitoring
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Underground pipe network water level detection
Technical Support & Custom Solution
We provide datasheet, dimension drawing, interface protocol, demo code and technical support.
Support sample test, ODM/OEM customized service, welcome global customers to inquire and cooperate.
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