At the World Climate Conference held in Cancun in December 2010, China released a roadmap for carbon emissions and committed to reducing carbon dioxide emissions by 40% to 45% by 2020. China's 12th Five-Year Plan, released in March 2011, also paid close attention to climate change and environmental issues, and put forward the requirement of adopting energy efficiency technologies to reduce carbon dioxide emissions. According to relevant data, the energy consumption of China's industrial sector accounts for approximately 51% of the country's total energy consumption. Therefore, reducing energy consumption and improving energy efficiency in the industrial sector are the basic national policies for the country's sustainable development.
One of the most prominent points in the report of the 18th National Congress of the Communist Party of China is the proposal to vigorously promote ecological civilization construction. We should strive to promote green, circular and low-carbon development, foster the ecological civilization concept of respecting, conforming to and protecting nature, form a spatial pattern of conserving resources and protecting the environment, and build a beautiful China. At the "2012 Shanghai International Industry Expo" and the "OEM Summit Forum on Mechanical Design Technology" held in November 2012, some giants in the international automation industry, Companies such as Schneider, ABB, Pilz, Rockwell, Siemens, and Schmeser have once again launched their own "green machine" strategies and green and safe automation products on a large scale.
How the weighing instrument industry can adapt to the basic national policy of national development and innovatively develop energy-saving and efficiency-increasing products is another new issue faced by weighing instrument technology. For China's weighing instrument industry, environmental protection, safety, energy conservation and high efficiency constitute a blueprint of green weighing instruments and will also be another new goal for the development of China's weighing instrument technology.
The following elaborates on the concept of "green manufacturing" for industrial weighing instruments and the development and application of weighing instrument technology from the above four aspects respectively.
1. Weighing instruments and control of air pollutant emissions
Air pollution is currently one of the topics that the entire nation is most concerned about. In the past, people always believed that environmental protection and weighing instruments were two different industries. However, with the advancement of science and technology, the concept of environmental protection requirements should be introduced into the new generation of weighing instruments. Especially for products such as gravity-type automatic batching and weighing systems and continuous cumulative automatic weighing systems in industrial weighing equipment, during the processes of batching, conveying and dynamic weighing of a large amount of industrial raw materials, due to the dust raised by various materials during transportation and flow, the surrounding air may be polluted, which may cause the allowable concentration values of PM1, PM2.5 and PM10 in the local atmospheric environment to exceed the standard. Therefore, it has been stipulated in relevant standards that the discharge of industrial air pollutants should comply with the maximum allowable emission concentrations (mg/m ³) of different pollutants as stipulated in Table 1 "Emission Limits of Air Pollutants from Existing Pollution Sources" and Table 2 "Emission Limits of Air Pollutants from New Pollution Sources" of the national GB 16297 Comprehensive Emission Standard for Environmental Air Pollutants. The requirements for the maximum allowable emission rate (kg/h) and the limit values of unorganized emission monitoring concentrations. How to incorporate the design of a dust removal system into the newly designed system to meet national environmental protection requirements is a subject that all those undertaking the design of industrial raw material batching and weighing systems must consider.