International gaps The development of modern industrial instrumentation depends not only on the product technology level but also on the engineering application technology. In recent years, many measurement and control equipment manufacturing enterprises and thermal power, petrochemical, metallurgical and other applications of scientific and technological enterprises and engineering companies have made considerable progress in application software development and system integration technology, through the commitment of foreign control systems and product engineering applications , Mastered a number of large-scale projects and installations of automatic control applications. However, with the development of foreign field bus, SOLUTION, MIV, EPC and other technologies and engineering assembly methods, the difficulty of China's automatic control systems and field instruments entering large-scale projects will further increase.
China's automation control system and on-site instrumentation and key precision test instruments are still 10 to 15 years apart from the international level.
Gap One: Poor Product Reliability The overall characteristics of modern industrial instrumentation are high reliability, high performance, and high applicability. The gap between most products of Chinese companies and foreign products is also in this respect. For example, China's self-developed decentralized control system (DCS) and electromagnetic flowmeter, the basic performance and functionality of these products has been close to the international level, but there are still some gaps in reliability and engineering application capabilities.
Gap two: Digitalization, intelligence, and low level of integration The technical characteristics and trends of modern industrial instrumentation are digital, intelligent, networked, and integrated, while China's products are generally conventional varieties, and smart products have just begun. Taking nuclear power control systems and instrumentation integration as an example, the gap is even greater after entering the digital control technology era due to the weak foundation.
Gap three: High-tech differential The foreign smart actuators have adopted new technologies such as variable frequency speed control, new-type motors, low-work consumption, micro-piezoelectric ceramic I/P converters, Bluetooth communication technology, intelligentization, and field bus. Start getting started.
Gaps 4: Product precision is low In mass flow meters, for example, the accuracy of foreign measurements is divided into 4 grades, the highest accuracy and can measure the gas is 0.1, the most common is 0.15, while the domestic can only reach economical Grade 0.2 and applicable Grade 0.5. Another example is China's gas meter at the gas station is generally 5% accuracy, but the overseas 300,000 tons of oil tankers to China's delivery accuracy to 0.1%.
Gap 5: The incomplete specifications use high-precision intelligent pressure/differential pressure transmitters as an example. The domestic transmitter lacks 1 kPa or less of micro-low pressure, 800 kPa or more of high differential pressure range, 16 MPa or more of high static pressure, and corrosion resistance on the measurement reference range. With specifications and other products, some engineering or system application special requirements cannot be met.
Gaps 6: The low degree of automation such as high-performance photoelectric direct reading spectrometer, the vacuum degree of foreign instruments is monitored by the computer in real time, and domestic instruments still need manual operation in many aspects.
Gaps 7: Less high-end products At present, China's high-end products are few or even blank. Taking atomic absorption spectrophotometer as an example, there are high-end instruments for Zeeman background correction technology in foreign countries, which have not yet been developed in China. The high-end needs mainly rely on imports.
Gap 8: Market share is low Programmable controller (PLC) is taken as an example. More than 95% of China's PLC market is occupied by foreign products. European and American products have absolute advantages in large and medium-sized PLC fields. Japanese products have an advantage in the field of small-scale PLCs, and products in South Korea and China Taiwan also have a certain market share. The market impact of China's own indigenous brand PLC is very small, and it is difficult to form economies of scale.
China's automation control system and on-site instrumentation and key precision test instruments are still 10 to 15 years apart from the international level.
Gap One: Poor Product Reliability The overall characteristics of modern industrial instrumentation are high reliability, high performance, and high applicability. The gap between most products of Chinese companies and foreign products is also in this respect. For example, China's self-developed decentralized control system (DCS) and electromagnetic flowmeter, the basic performance and functionality of these products has been close to the international level, but there are still some gaps in reliability and engineering application capabilities.
Gap two: Digitalization, intelligence, and low level of integration The technical characteristics and trends of modern industrial instrumentation are digital, intelligent, networked, and integrated, while China's products are generally conventional varieties, and smart products have just begun. Taking nuclear power control systems and instrumentation integration as an example, the gap is even greater after entering the digital control technology era due to the weak foundation.
Gap three: High-tech differential The foreign smart actuators have adopted new technologies such as variable frequency speed control, new-type motors, low-work consumption, micro-piezoelectric ceramic I/P converters, Bluetooth communication technology, intelligentization, and field bus. Start getting started.
Gaps 4: Product precision is low In mass flow meters, for example, the accuracy of foreign measurements is divided into 4 grades, the highest accuracy and can measure the gas is 0.1, the most common is 0.15, while the domestic can only reach economical Grade 0.2 and applicable Grade 0.5. Another example is China's gas meter at the gas station is generally 5% accuracy, but the overseas 300,000 tons of oil tankers to China's delivery accuracy to 0.1%.
Gap 5: The incomplete specifications use high-precision intelligent pressure/differential pressure transmitters as an example. The domestic transmitter lacks 1 kPa or less of micro-low pressure, 800 kPa or more of high differential pressure range, 16 MPa or more of high static pressure, and corrosion resistance on the measurement reference range. With specifications and other products, some engineering or system application special requirements cannot be met.
Gaps 6: The low degree of automation such as high-performance photoelectric direct reading spectrometer, the vacuum degree of foreign instruments is monitored by the computer in real time, and domestic instruments still need manual operation in many aspects.
Gaps 7: Less high-end products At present, China's high-end products are few or even blank. Taking atomic absorption spectrophotometer as an example, there are high-end instruments for Zeeman background correction technology in foreign countries, which have not yet been developed in China. The high-end needs mainly rely on imports.
Gap 8: Market share is low Programmable controller (PLC) is taken as an example. More than 95% of China's PLC market is occupied by foreign products. European and American products have absolute advantages in large and medium-sized PLC fields. Japanese products have an advantage in the field of small-scale PLCs, and products in South Korea and China Taiwan also have a certain market share. The market impact of China's own indigenous brand PLC is very small, and it is difficult to form economies of scale.
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