Wind, rain, temperature, humidity and other climatic environments have a great impact on agricultural production. In order to better grasp the changes in agricultural climate and environment and carry out targeted scientific production, the current agricultural field uses professional meteorological instruments to "watch wind and rain. "In addition, with the development of science and technology, the accuracy, convenience and functionality of these meteorological instruments are getting better and better. For example, modern rain gauges realize online transmission and display of rainfall data. You can view the data using mobile phones and computers. Convenience.
Rain gauge is one of the most widely used instruments in hydrological monitoring. The instrument is mainly used to measure natural rainfall, and at the same time convert rainfall into digital information output in the form of a switch to satisfy information transmission, processing, recording and The need for display etc. The traditional rain gauge is wired transmission, and the measured data needs to be manually recorded by the staff, and then input into the computer one by one for summary analysis. This kind of work efficiency is not high, and the workload of the staff is relatively large. And we know that in recent years, Internet technology has developed rapidly, and mobile phones and computers have gradually become popular. Making good use of Internet technology can provide a powerful technological boost for agricultural development. In terms of rainfall monitoring, the rain gauge with wireless transmission technology has been applied to realize the wireless transmission of data, and the information and data can be uploaded to the cloud, which is more convenient for the subsequent management and analysis of integrated data, further deepening the meteorological service for agriculture, and promoting precision meteorological agriculture. The development of China has played an important role in ensuring food production safety and enhancing agricultural competitiveness.
These technical characteristics of modern rain gauges are just a small manifestation of modern agricultural science and technology boosting agricultural development. With the development of science and technology, agricultural instruments are constantly undergoing technological innovations, whether in agricultural scientific research, breeding and cultivation, or production guidance. These scientific instruments are getting easier to use, more accurate, and more information-based. They not only provide valuable agricultural data for agricultural production management, but also facilitate the overall management of relevant departments. The effect is getting more and more prominent.
Flanges are a method of connecting pipes, valves, pumps, and other equipment to form a piping system, usually by welding or threading. It is also easy to clean, inspect or modify. Flanges are usually welded or tightened. Flange joints are made by bolting two flanges together and using washers between them to provide a seal.
Pipe assemblies may be bolted together between flanges. Flanges are used to connect pipes to each other, to valves, to fittings, and to special items such as filters and pressure vessels. Cover plates can be connected to create "blind flanges". Flanges are bolted together, and sealing is usually done using washers or other methods. Industries dealing with flammable, volatile, toxic or corrosive substances require special protection at flange joints. Flange shields can provide an additional level of protection to ensure safety.
There are many different flange standards worldwide. For simple functionality and interchangeability, these designs have standardized dimensions. Common world standards include ASA/ASME (USA), PN/DIN (Europe), BS10 (UK/Australia) and JIS/KS (Japan/Korea).
In most cases, standards are interchangeable, as most local standards have been aligned with ISO standards.
Flanges are also made in standardized sizes, usually in "flat", "convex", "mortise" or "ring joint" styles, but other ambiguous styles may be available.
Flange designs include "weld neck", "socket", "lap", "socket weld", "thread" and "blind flange".
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