Optical Rain Gauge Sensor for Flood Warning Monitoring

Key Features

Optical Rainfall Measurement: Uses optical sensing technology to detect rainfall intensity without relying on a traditional tipping bucket mechanism.
High Resolution Output: Standard 0.1 mm rainfall resolution supports precise rainfall data collection for weather and hydrology applications.
Fast Response for Real Time Monitoring: Optical detection enables rapid rainfall response, helping improve flood warning and short duration rainfall tracking.
RS485 and Pulse Output Options: Supports RS485 output and pulse output for integration with data loggers, RTUs, PLCs and IoT monitoring systems.
Modbus RTU Communication
Compatible with common industrial monitoring platforms through Modbus RTU protocol.
Low Power Consumption: Power consumption is less than 0.24 W, suitable for solar powered and battery assisted outdoor stations.
Wide Working Environment: Operates from -40°C to 60°C and 0 to 100% RH, suitable for harsh outdoor weather conditions.
Compact and Easy to Install: Small size, simple structure and lightweight design make it easy to integrate into rainfall stations or multi parameter weather stations.
Stable Performance with Low Maintenance: Optical structure reduces mechanical movement, helping lower maintenance requirements compared with mechanical rain gauges.
Customizable Multi Parameter Integration: Can be integrated with wind speed, wind direction, temperature, humidity, pressure and other environmental sensors for complete weather monitoring systems.

Product Description

1. Description

JW-RG-GYL1(LC42) optical rain gauge sensor provides real time rainfall intensity monitoring with 0.1 mm resolution and RS485 Modbus RTU output. Designed with optical sensing technology and multiple optical probes, it offers fast response, compact size, low power consumption and easy integration for flood warning, weather stations, hydrology monitoring and disaster prevention systems.

2. Product Overview

JW-RG-GYL1(LC42) optical rain gauge sensor is designed for accurate rainfall detection in automated weather monitoring and flood early warning systems. Unlike traditional tipping bucket rain gauges, this optical rainfall sensor detects raindrop density and falling speed through high precision optical sensing elements, enabling real time measurement with fast response and minimal mechanical wear.

With compact structure, low power consumption and flexible output options, the sensor is suitable for rainfall monitoring stations, urban waterlogging systems, mountain flood warning, hydrological observation, smart agriculture weather monitoring and environmental IoT platforms.In larger disaster prevention projects, rainfall data from the sensor can be combined with water level monitoring and automated alarms through an IoT flood early warning system.

The sensor supports RS485 output and pulse output, with Modbus RTU protocol for easy connection to data loggers, RTUs, weather stations and IoT gateways.

Item	Specification
Product Type	Optical Rain Gauge Sensor
Rain Sensing Diameter	6 cm
Measuring Range	0 to 30 mm per minute
Power Supply	9 to 30V DC
Power Consumption	Less than 0.24 W
Resolution	Standard 0.1 mm
Typical Accuracy	±5%
Output Options	RS485 output or pulse output
Communication Protocol	Modbus RTU
Working Temperature	-40°C to 60°C
Working Humidity	0 to 100% RH
Baud Rate	Default 9600 adjustable
Default Communication Address	01 adjustable
Approximate Size	Diameter 150 mm
Approximate Height	173.5 mm

3.Output and Integration Overview

The optical rain gauge sensor supports RS485 output and pulse output. RS485 communication uses the Modbus RTU protocol, which is widely used in industrial monitoring and environmental IoT systems. The default baud rate is 9600, and the communication address is 01, both of which can be adjusted according to project requirements.

This makes the sensor suitable for integration with:

Weather station data loggers
Hydrological RTUs
PLC control systems
IoT gateways
Solar powered monitoring stations
Remote environmental monitoring platforms

4. Application Scenarios

Flood Early Warning Systems: The optical rain gauge provides real-time precipitation data for rapid rainfall detection. For projects that also require river level, drainage water depth, remote communication, cameras, warning displays, and cloud alarms, it can be integrated into a complete flood monitoring system.
Automatic Weather Stations: Can be installed as part of a compact or integrated weather station for rainfall, wind, temperature, humidity and pressure monitoring.
Urban Waterlogging Monitoring: Supports rainfall data collection for city drainage monitoring, stormwater management and emergency response platforms.
Hydrology and Water Conservancy Monitoring: Suitable for reservoirs, rivers, irrigation districts, water resource stations and watershed rainfall observation.
Smart Agriculture: Used in farms, orchards, greenhouses and irrigation areas to support rainfall records, irrigation decisions and climate data analysis.
Environmental IoT Monitoring: Can be integrated with multi parameter sensors for environmental monitoring platforms, disaster prevention stations and remote telemetry systems.

FAQ

Q

1. What is an optical rain gauge sensor?

A

An optical rain gauge sensor measures rainfall through optical detection technology. It detects raindrops and rainfall intensity without relying on a traditional tipping bucket mechanism.
Q

2. What output does this optical rain gauge sensor support?

A

The sensor supports RS485 output and pulse output. RS485 communication uses Modbus RTU protocol for easy connection with industrial and IoT monitoring systems.
Q

3. Can this sensor be used for flood warning systems?

A

Yes. The sensor is suitable for flood warning, mountain torrent monitoring, urban waterlogging monitoring and hydrological rainfall observation.
Q

4. Does JW-IoT provide system integration support for this rain gauge sensor?

A

Yes. JW-IoT can support integration with data loggers, RTUs, gateways and cloud monitoring platforms for rainfall and flood warning projects.
Q

5. What is the measuring range of this sensor?

A

The measuring range is 0 to 30 mm per minute, making it suitable for real time rainfall intensity monitoring.
Q

6. What is the resolution of the optical rain gauge sensor?

A

The standard resolution is 0.1 mm.
Q

7. Is this sensor suitable for solar powered monitoring stations?

A

Yes. The sensor consumes less than 0.24 W, making it suitable for solar powered and low power remote monitoring stations.
Q

8. Can JW-IoT customize this sensor into a multi parameter weather station?

A

Yes. JW IoT can integrate rainfall, wind speed, wind direction, temperature, humidity, pressure and other sensors into a complete weather monitoring solution.
Q

9. What communication protocol does the sensor use?

A

The RS485 version uses Modbus RTU protocol. The default baud rate is 9600 and the default address is 01, both adjustable.