SISCO digital radar rain sensor utilizes radar wave technology to measure precipitation intensity without mechanical components. This radar rain gauge sensor requires no heating device, reducing energy use. With RS485 output and compact design, this rainfall radar sensor enables reliable data transmission and easy installation.
Precipitation Measurement & Type Recognition
- Measures real-time rainfall intensity from 0 to 200 mm/h with high accuracy.
- Records cumulative rainfall volume over user-defined time periods (daily, monthly, annually).
- Distinguishes between rain, snow, and hail based on Doppler frequency shift analysis.
- Detects precipitation start and stop moments with dry/wet status signal output.
Data Communication & System Integration
- Outputs real-time rainfall intensity and cumulative data via RS485 digital interface.
- Supports Modbus-RTU protocol for direct connection to PLC, RTU, and IoT gateways.
- Configurable alarm thresholds for upper/lower limits with trigger output upon exceedance.
- Enables remote parameter configuration, data polling, and firmware updates via communication bus.
Applications
SISCO digital radar rain sensor is widely used in meteorological monitoring stations, smart city systems, river flood warning, agricultural irrigation management, and industrial rainfall data collection. Its robust design and reliable performance make this radar rainfall sensor an ideal choice for various professional precipitation measurement applications.
Agricultural Irrigation
Flood Warning
Smart City System
Weather Monitoring Station
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| Model | SISCO-RS-YL4 |
| Communication Interface | RS485 / RS232 |
| Measurement Type | Rain, snow, hail |
| Measurement Range | 0 ~ 200 mm/h (rainfall) |
| Particle Size Range | 0.5 ~ 5.0 mm (raindrop size) |
| Measurement Accuracy | 5% (@ wind speed <5m/s) |
| Resolution of Rainfall | 0.1 mm |
| Sampling Frequency | 1 second |
| Measurement Principle | 24GHz Doppler radar |
| Communication Protocol | ModBus |
| Power Supply | 12 ~ 24 VDC |
| Power Consumption | < 2 W |
| Operating Temperature | -30°C ~ 70°C |
| Working Humidity | 0 ~ 100% |
| Overall Dimension | 82 × 195 mm |
| Material | ABS |
| Net Weight | 380 g |
Dimensions (unit: mm)
Q1: How does the digital radar rain sensor measure rainfall intensity?
A1: The digital radar rain sensor emits 24GHz Doppler radar waves toward falling raindrops. By analyzing the frequency shift of reflected waves, it calculates the falling velocity of raindrops and converts it into real-time rainfall intensity from 0 to 200 mm/h with high accuracy.
Q2: What communication protocols does the radar rainfall sensor support for system integration?
A2: This radar rainfall sensor supports RS485 and RS232 communication interfaces with the standard Modbus-RTU protocol. It can be easily connected to PLC controllers, RTU devices, IoT gateways, and SCADA systems for seamless data acquisition and remote monitoring.
Q3: Does the rain gauge sensor require regular maintenance or calibration?
A3: No, the rain gauge sensor adopts Doppler radar technology with no moving parts, eliminating mechanical wear and blockage issues. It is factory-calibrated and requires no regular maintenance or field calibration, ensuring long-term stable operation.
Tips: What factors should you consider when installing the radar rainfall sensor?
- Choose an open location away from buildings, trees, or other obstructions that may block or reflect the radar beam.
- Ensure the sensor is mounted with the radar wave emission window facing upward or at the correct orientation as specified in the installation manual.
- Verify the power supply is within the 12- 24 V DC range, and the RS485/RS232 wiring is correctly connected to the data logger or controller.
- Check the Modbus communication settings (baud rate, address, parity) to ensure proper data transmission between the sensor and the receiving system.
Thank you for buying industrial test and measurement equipment on SISCO.com, all products sold by SISCO and the partner cover a 12 months warranty, effective from the date of receiving the products.
What is covered?
SISCO is responsible for providing free spare parts, and free technical support to assist the customer to repair the defective products until the problem is solved.
What is not covered?
- Product purchased from anyone other than a SISCO store or a SISCO authorized reseller.
- Expendable parts.
- Routine cleaning or normal cosmetic and mechanical wear.
- Damage from misuse, abuse or neglect.
- Damage from use of parts other than SISCO approved.
- Damage from use outside the product’s usage or storage parameters.
- Damage from use of parts not sold by SISCO.
- Damage from modification or incorporation into other products.
- Damage from repair or replacement of warranted parts by a service provider other than a SISCO authorized service provider.
- Damage caused by the application environment not meeting the product usage requirements and the failure to perform preventive maintenance.
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