The tipping bucket rain gauge, widely used in hydrological automatic measurement and reporting systems both domestically and internationally, is known to suffer from significant measurement errors. These inaccuracies mainly stem from three key factors: the maximum starting threshold, the dumping metering process, and the size of the inlet opening. Understanding these sources of error is crucial for improving the performance of the device.

Based on this analysis, several improvement measures have been proposed. The primary strategies include optimizing the sensitivity of the tipping bucket, reducing the tilt angle of the collecting bucket, shortening the time it takes for the two chambers to switch, increasing the area of the rain inlet, installing a flow control valve, and applying a Teflon coating to the instrument's surface to reduce adhesion. Additionally, software-based error correction techniques can be implemented to further enhance accuracy.

By addressing these issues, the problem of large measurement errors in tipping bucket rain gauges can be effectively resolved. These improvements not only enhance the reliability of rainfall data but also make the technology more suitable for real-world applications in weather monitoring and hydrological studies.

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