China's Instrumentation Technology Needs to Pass Eight Levels

The development of modern industrial instrumentation not only depends on the product technology level, but also involves 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. China's instrumentation and technology breakthroughs need to reach eight miles.

Breakthrough 1: Improve the level of digitization, intelligence, and integration The technical characteristics and trends of modern industrial instruments and meters are digital, intelligent, networked, and integrated. In general, China’s products are generally conventional varieties, and smart products have just started. 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.

Breakthrough 2: Improve 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 function of these products has been close to the international level, but there are still some gaps in the reliability and engineering application capabilities.

Breakthrough 3: Improve the high-tech foreign intelligent 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, etc. Start getting started.

Breakthrough 4: Product precision is more precise Take mass flowmeter as an example, foreign measurement accuracy is divided into 4 grades, the highest accuracy and can measure gas is 0.1 grade, the most common is 0.15 grade, and domestic can only reach the economy at present Type 0.2 and applicable 0.5. Another example is China's metering at gas stations. . 5% accuracy, but the accuracy of overseas 300,000-ton oil tankers to China's delivery is 0.1%.

Breakthrough 5: Abundant varieties and specifications Take the high-precision intelligent pressure/differential pressure transmitter as an example. The domestic transmitter lacks 1 kPa or less of micro-low pressure, more than 800 kPa of high differential pressure range, more than 16 MPa 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.

Breakthrough Six: To improve the 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.

Breakthrough 7: Expanding the share of high-end products At present, there are few high-end products in China, 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.

Breakthrough Eight: Improve market share Take PLC as an example. At present, 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. The instrumentation market is also as described above.