Chemical Technology Process Package Design and Development Training Course Unit One: Basic Concepts of Instruments 1. Measurement, Measurement Error, Direct Measurement and Indirect Measurement 1. What is measurement error? Answer: The difference between the measured value and the true value is called measurement error. 2. What are direct and indirect measurements? Answer: Direct measurement refers … Read more
Do you remember the old gentleman who sat in the second class of the high-speed train, wearing old leather shoes and working intently? Image source: @Jigong Strategy Weibo The old gentleman in this photo is Liu Xianlin, the honorary president of the Chinese Academy of Surveying and Mapping and one of the first academicians of … Read more
Source / Knowledge Automation (ID: zhishipai) Author / Lin Xueping Cover / Tuchong Creative China’s manufacturing is large but not strong, and the instrumentation industry is not even considered large, it can only be said to be numerous but not substantial. The domestic leaders in instrumentation are merely a fraction compared to foreign manufacturers. Even … Read more
The Development of Process Control Instruments and Control Systems Has Gone Through Four Stages:1. In the 1950s, pneumatic unit combined instruments were the main focus. 2. In the 1960s, the emergence of electronic components like transistors allowed for the development and application of electric unit combined instruments (DDZⅡ). 3. In the 1970s, safety spark explosion-proof … Read more
This article is an excellent piece from the KX forum. KX Forum Author ID: KerryS Dobby has two main functions: one is inline hooking, and the other is instruction instrumentation. The principles of both are similar, but this article mainly introduces instruction instrumentation. Instruction instrumentation refers to inserting instrumentation into any instruction (either at the … Read more