PRE520-RFS1 Tipping Bucket Rainfall Sensor
PRE520-RFS1 Tipping Bucket Rainfall Sensor
The PRE520-RFS1 is a compact, high-accuracy rainfall sensor designed to convert rainfall into a measurable electronic pulse output. It uses a dual-chamber tipping bucket mechanism, where each tip corresponds to a specific amount of rainfall (0.1mm or 0.2mm). These pulses can be recorded and analyzed via data loggers or integrated weather monitoring platforms.
PRE520-RFS1 Tipping Bucket Rainfall Sensor – Accurate and Reliable Rainfall Measurement Solution
If you’re looking for a professional-grade solution to monitor precipitation in real time, the PRE520-RFS1 Tipping Bucket Rainfall Sensor is one of the most dependable choices on the market. With a durable structure, precise measurement capabilities, and seamless integration into weather and hydrological systems, this sensor has become a trusted tool for environmental monitoring worldwide.
What is the PRE520-RFS1 Tipping Bucket Rainfall Sensor?
The PRE520-RFS1 is a compact, high-accuracy rainfall sensor designed to convert rainfall into a measurable electronic pulse output. It uses a dual-chamber tipping bucket mechanism, where each tip corresponds to a specific amount of rainfall (0.1mm or 0.2mm). These pulses can be recorded and analyzed via data loggers or integrated weather monitoring platforms.
Key Features of the PRE520-RFS1 Model
✔ Compact size for flexible installation
✔ High precision with ±4% accuracy at 2mm/min rainfall intensity
✔ Stainless steel rain collector for durability
✔ Anti-debris funnel mesh and optional removable filter
✔ Optional heating system for cold regions
✔ Built-in bubble level for proper horizontal alignment
✔ Supports reed switch pulse and RS485 output
These features make it ideal for applications in meteorological stations, hydrology research, agriculture, climate monitoring, and flood control systems.
Applications of the PRE520-RFS1 Sensor
The versatility and durability of the PRE520-RFS1 allow it to be used in various environmental monitoring scenarios:
🌧️ Water supply systems – Supports efficient water resource planning
🌧️ Hydrological monitoring – Offers critical input for flood forecasting and watershed management
🌧️ Disaster monitoring – Early detection of heavy rain and storm events
🌧️ Agro-meteorological research – Helps monitor rainfall in agricultural zones for better crop planning
🌧️ Climate research – Ideal for long-term precipitation data collection
Technical Specifications of PRE520-RFS1
Below is a detailed specification table for the PRE520-RFS1 tipping bucket rainfall sensor:
| Item | Specification |
|---|---|
| Model | PRE520-RFS1 |
| Rain Collector Diameter | 200 mm |
| Height of Device | 350 mm |
| Measured Rainfall Intensity | Max: 4 mm/min |
| Allowable Rainfall Intensity | Max: 10 mm/min |
| Resolution | 0.1 mm / 0.2 mm |
| Accuracy (at 2mm/min) | ±4% |
| Output Signal | Reed switch pulses, RS485 (12–24VDC supply) |
| Max Load Voltage | 30 VDC (pulse output) |
| Max Load Current | 20 mA (pulse output) |
| Operating Temperature | -20°C to +80°C (non-freezing environment) |
| Main Material | Collector: 304 stainless steel; Bucket: ABS |
| Weight (Unpacked) | 3.5 kg |
| Heating Function (Optional) | Power: approx. 350W, Voltage: 220VAC |
| Collector Filter | Optional removable filter (debris protection) |
| Leveling Mechanism | Integrated horizontal bubble |
| Mounting | Adjustable screws and stable base |
Working Principle of PRE520-RFS1
Rain is collected through the 200mm funnel and directed to a divided ABS tipping bucket. Once a calibrated volume is reached, the bucket tips, sending a pulse output through a reed switch to the data logger. This seesaw action continues with rainfall, ensuring continuous and real-time recording.
This simple yet effective mechanical principle ensures long service life and low maintenance while maintaining accuracy in rainfall monitoring.
Why Choose PRE520-RFS1 Tipping Bucket Rainfall Sensor?
✅ Durable Design – Made with corrosion-resistant stainless steel for long-term outdoor use
✅ Wide Temperature Range – Suitable for extreme climates with optional heating system
✅ Easy to Install and Maintain – Compact size, leveling bubble, and removable filter
✅ Highly Compatible – Seamless integration with most weather stations and hydrological monitoring systems
✅ Cost-Effective – Offers premium performance at a competitive price point
Conclusion
The PRE520-RFS1 Tipping Bucket Rainfall Sensor is a professional-grade solution for anyone seeking accurate rainfall measurement, whether for research, agriculture, or public safety. With proven technology and robust construction, it delivers consistent performance even in challenging environments.