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120ghz Radar Liquid Level Sensors Specifications and Wiring Definitions
| PIN | Colour | Name | Description |
| 1 | Red | Vcc | 12V DC Power Supply |
| 2 | Black | GND | DC Power Supply Negative |
| 3 | Green | 485A+ | |
| 4 | Yellow | 485B- |
120Ghz Radar Level Sensor Non Contact water Level Measurement
ZLYRR03B is a compact 120GHz FMCW radar level sensor for accurate non-contact water level measurement, replacing laser and ultrasonic technologies.
- 120GHz FMCW Technology
- 20m Measuring range
- ASCII/MODBUS Protocol
- Compact Design
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120GHz 20m Distance Measuring Radar Description
ZLYRR03B is 120Ghz Radar Level Sensor Non Contact water Level Measurement which adopts FMCW FM continuous wave mode, microstrip array antenna plus independent and replaceable lens antenna focusing, which is able to replace the laser, industrial ultrasonic ranging radar and other products.
120GHz radar system can accurately measure the distance of stationary or moving targets, the sensor output can be configured by the range or signal strength of the filter results.
The product is small and compact, suitable for a variety of ranging application scenarios.
120Ghz Water Level Sensor Technical Sheet
| Parameter | Symbol | Min | Typical | Max | Unit | Description |
| Transmitter | ||||||
| Transmitter Frequency | ƒ | 120 | 123.5 | GHz | ||
| Output Power (EIRP) | Pout | 13 | 20 | dBm | 1dBm（TX） | |
| Output Power Consumption | 9 | 12 | 14 | mw | ||
| Antenna Angle (refer to Figure 4) | ||||||
| Beamwidth(-3dB) | Horizontal | 3 | ° | |||
| Vertical | 3 | ° | ||||
| Power supply (anti-reverse connection) | ||||||
| Working Voltage | VCC | 9 | 12 | 24 | V | |
| Working Current | ICC | 20 | mA | typical value | ||
| Output | RS485 communication mode, default baud rate 115200, ASCII/Modbus protocol can be freely switched. | |||||
| Ambient | ||||||
| Working Temperature | TOP | ﹣45 | 85 | ℃ | ||
| Overall Dimension (D x H) | Φ66mm x 93mm | |||||
| Protection class | IP68 | |||||
| Weight | 280 g | |||||
| Shell Material | ABS engineering plastics | |||||
| Measurement Indicators: | ||||||
| Measuring range | 0.1~20m | |||||
| Measuring accuracy | ±2mm | |||||
| Resolution | 1mm | |||||
| Start-up time | 1s | |||||
120Ghz Water Level Sensor Applications
120Ghz Radar Level Gauge for water level monitoring in lakes and rivers, flash flood warning, water storage ponds, sewage pipe networks, etc.
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