What conditions does the process impose on self-control?
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For details, please refer to HG/T 20636.2-1998. According to personal understanding, the conditions for self-control caused by technology are divided into active conditions and passive conditions (for technology). The active conditions are: What degree of control do I need for this device, the final control quality (automatic meter opening rate, automatic control rate, etc.), what process parts do I need to observe the five major parameters of the instrument, etc. ； The passive condition is: Technicians don't like to mention things, and generally they always mention bad or vague ones. They always want to let the instrumentation personnel figure it out by themselves, such as the components of the process medium at each automatic control point, temperature, gauge pressure, flow rate, characteristics of the medium, material, pipe specifications, conductivity, viscosity (Reynolds), and allowable differential pressure. Let me tell you secretly, they actually have something called material balance, which is relatively complete, but it is impossible to take it out.
The process also provides conditions for self-control: Process equipment floor plans, process system diagrams, and possibly * * Division of regional levels. Personally, I think that craft majors don’t like things that are clear (he may not be able to mention them clearly). * To adjust the system settings and parameter requirements.