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Rika Sensor is a weather sensor manufacturer and environmental monitoring solution provider with 10+ years of industry experience.

About the tipping bucket rain gauge

by:Rika Sensors     2021-09-30
About the tipping bucket rain gauge
Rainfall is often used to express rainfall depth. It refers to the depth of the water layer accumulated on the water surface without evaporation, infiltration, or loss of rain falling from the sky to the ground. It is usually expressed in millimeters, which can be expressed intuitively. How much rainfall.

Rainfall will change to varying degrees over a period of time. Rainfall will increase or decrease, which not only directly affects the water level of rivers, lakes and rivers, but also affects the growth, maturity, yield and health of crops, and indirectly affects cities. The occurrence of secondary disasters such as waterlogging, landslides, mudslides and mountain torrents, these secondary disasters are related to people's food, clothing, housing and transportation.

Therefore, timely monitoring of rainfall changes can provide accurate, true and timely reference for flood prevention and disaster prevention. Timely monitoring of rainfall changes plays an extremely obvious role in people's production and life. Therefore, rainfall monitoring equipment has become extremely important.

The most widely used rain gauge in China is the tipping bucket rain gauge. The tipping bucket rain gauge is an important rainfall observation instrument that can observe the digitization of rainfall data in real time. It has the advantages of accurate time, automatic data recording and convenient data collection, compilation and processing.

The principle of the tipping bucket rain gauge is mainly that rainwater enters the water receiver from the uppermost rain port, falls into the water diversion funnel, and flows into the tipping bucket through the funnel mouth. When the water accumulation reaches a certain height (such as 0.1 mm), the tipping bucket Loss of balance and tipping; Pour the water out, as the rainfall continues, the tipping bucket will be turned left and right, the contact switch will turn the tipping bucket flip times into an electrical signal, which will be sent to the recorder, and the precipitation data will be read on the cumulative counter and self-recording clock. In this way, the rainfall process can be measured back and forth.

RS-YL-*-4 tipping bucket rain gauge is composed of shell, filter, rain collector, funnel, tipping bucket, terminal block, leg bracket, reed switch, rain gauge base, etc. Among them, a tipping bucket shaft, a round horizontal bubble, a reed switch bracket and a signal output terminal are installed on the rain gauge base. Unlike other tipping bucket rain gauges, the tipping bucket sleeve of this instrument is an integrated positioning structure. The tipping bucket is installed in the shaft bearing through the tipping bucket shaft. The internal structure assembly is completed when leaving the factory, and there is no need to install the internal structure on site. Brings convenience.

Its rain-bearing port is 200mm in size, and its performance meets the requirements of the national standard GB/T 21978.2-2014 'Requirements for Precipitation Observation'.

It adopts stainless steel tipping bucket rain gauge, with high protection level, stamping rib design, greater strength, less deformation of the barrel, and more accurate measurement. The three-dimensional streamline design makes the tipping bucket more smooth, and has the function of self-cleaning dust and easy cleaning. The drooping arc-surface diversion tip has a beautiful and smooth appearance and better water turning performance. In order to prevent the leaves and other debris from blocking the rain flow, the tipping bucket rain gauge is designed with a mesh at the funnel to minimize the error caused by stagnant water; its tipping bucket component support system is well-made, and the friction torque is small, so the tipping bucket component is flipped sensitively , Stable performance and reliable work.

The edge of the bucket mouth of the tipping bucket rain gauge is blade-shaped, and the blade angle is 44°, which meets the requirements of the GB/T21978-2014 national standard to ensure the accuracy of monitoring. It has two output modes: RS485 and pulse signal.

The tipping bucket rain gauge can be used in relevant departments such as meteorological stations (stations), hydrological stations, agriculture and forestry, national defense, field observation stations, etc., with rainfall recorders to measure precipitation, precipitation intensity, precipitation time, etc. It can provide original data for flood control, water supply dispatching, and water regime management of power station and reservoir.

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