What is the Weighing Rain Gauge? What is its working principle?

Weighing Rain Gauge is based on weighing principle technology, utilizing high-precision sensors to real-time measure the pressure change of precipitation on the receiving container, thereby accurately calculating precipitation intensity. It can measure both liquid and solid precipitation, as well as mixed solid-liquid precipitation, suitable for long-term automatic monitoring needs in hydrology, meteorology, forestry, and other departments.

The Weighing Rain Gauge is a precipitation monitoring device designed based on the weighing principle. This device monitors the weight change produced by the accumulation of precipitation in the receiving container in real-time using high-precision sensors, and then calculates the accurate precipitation intensity. Its unique feature is its ability to simultaneously measure liquid precipitation, solid precipitation, and mixed solid-liquid precipitation, providing a complete solution for various precipitation monitoring scenarios.

In terms of technical principles, the Weighing Rain Gauge uses strain gauge sensors or electromagnetic force balance sensors as the core measuring components. When precipitation falls into the receiving container, the sensor detects the weight increase in real-time and converts this mechanical signal into an electrical signal. The data acquisition system calculates the precipitation intensity based on the time series of weight changes, and also uses temperature monitoring data to differentiate precipitation types. This measurement method has high sensitivity and can detect precipitation changes as small as 0.1 millimeters.

The main components of the device include the receiving container assembly, weighing sensor, temperature sensor, data collector, and protective casing. The receiving container uses a special geometric design to ensure that it receives sufficient precipitation samples while preventing precipitation from splashing out. The weighing sensor is precisely calibrated, with a measurement range typically covering 0-1000 mm of precipitation and a resolution of up to 0.01 mm. The temperature sensor is used to monitor the ambient temperature and assist in determining the precipitation type. The data collector is responsible for recording and processing the measurement data, and the protective casing ensures that the device operates normally in harsh weather conditions.

The significant advantage of the Weighing Rain Gauge lies in its ability to measure all forms of precipitation. For liquid rainfall, the device directly measures the weight of the rainwater and converts it into precipitation amount. For solid snowfall, the device maintains the weighing system's normal operation through built-in anti-freezing measures, accurately recording the amount of snow. When encountering mixed precipitation such as sleet, the device can comprehensively determine the precipitation type based on the weight change characteristics and temperature data. This comprehensive measurement capability allows it to provide reliable monitoring data under different climatic conditions.

Device installation requires selecting an open area, avoiding interference from buildings or trees that may affect precipitation reception. The installation height should comply with specifications, ensuring the water inlet is horizontally positioned. During use, it is necessary to regularly check for blockages in the water inlet, clean the sensor surface, and verify measurement accuracy. The equipment's protective design can withstand environmental impacts such as strong winds, extreme temperatures, and precipitation, ensuring long-term stable operation.

The data acquisition system records precipitation data at minute or hourly intervals and transmits it to the data center via wired or wireless means. The equipment supports multiple communication protocols, allowing for easy integration into existing monitoring networks. The data processing software provides functions such as precipitation statistics, intensity analysis, and trend charts to meet the monitoring needs of different users.

In the field of hydrological monitoring, the Weighing Rain Gauge is widely used in water level stations of rivers and lakes, reservoir rainfall stations, and urban hydrological stations. Its long-term automatic monitoring capability provides important basic data for hydrological forecasting, water resource management, and flood warning. In meteorological observation, the equipment is used in national meteorological stations, regional automatic stations, and special observation projects, supplementing the measurement blind spots of traditional rain gauges.

Forestry applications mainly include forest ecological stations and fire prevention monitoring points. The equipment can accurately record precipitation in forest areas, providing a basis for forest hydrology research and fire risk assessment. In agricultural meteorological services, the equipment helps monitor farmland precipitation, guiding irrigation scheduling and crop management. Furthermore, it has wide applications in professional fields such as transportation and power.

The technological development of the Weighing Rain Gauge is trending towards higher accuracy and stronger environmental adaptability. The new generation of products integrates intelligent diagnostic functions, automatically detecting equipment status and prompting maintenance needs. With the expansion of monitoring networks, this equipment is becoming increasingly important in precipitation monitoring systems, providing reliable precipitation observation data support for various industries.