I want to learn *field instrument selection and design – what are some good methods?

First, understand the characteristics of various instruments, then observe and learn more by going to the site to see which instrument is used in what situation and why. It’s best to learn on-site; it’s much more convenient than studying design while sitting at home. If you have any questions, you can go to the site and take a look, observe more, learn more, and think more. Also, pay attention to the standards and regulations for learning – after all, design is always carried out in accordance with these standards. All kinds of design drawings can find their original versions in these standards, with only minor differences. So, start by looking at the standards and build up gradually.

Here are two suggestions for you: 1. Find one or two process control schemes used in chemical manufacturing plants. First, understand thoroughly the properties of the process media and the required control parameters. Try to select the appropriate instruments on your own first, then see what kind of instruments are actually in use there and how they differ from those you chose. Consider why those choices were made. Working on several examples will be very helpful. But the real way to improve your skills is by working on actual projects; after handling a few projects, you’ll gain more confidence. 2. Work in a chemical plant run by Taiwanese owners for two years. Taiwanese owners are very frugal; they often assign the task of designing instrument control schemes and selecting instruments – tasks that should normally be done by design firms – to engineers, in order to save money. It’s more demanding work, but it provides good training opportunities

Reply to 3# zhuirvine: I support it. Pay more attention to the standards – design institutes also rely on standards when making decisions. Focus mainly on IEC standards; if your English is not that good, then look at the national standards! To become a competent instrumentation engineer, it is important to read papers written by others and to listen to their experience with debugging, but understanding and mastering the standards is even more crucial. Moreover, if you ever get the chance to work with colleagues abroad in the future, you’ll find that they are very familiar with the requirements outlined in the relevant standards. If you’re also familiar with them, then foreigners will view you with great respect :)

Of the two ideas put forward by the original poster, I think one is reasonable while the other is not. Selecting field instruments is actually quite easy to learn; as long as one has an understanding of the field instruments and the conditions at the site, and refers to the manufacturer’s specifications for those instruments, there should be no problems with making the selection. However, the design of field instruments may be a different matter. The design of field instruments may involve specialized knowledge that you have never come across or even heard of; so how do you develop a design concept and the specific steps to implement it? If you are aiming to work as a designer in the field of automatic control instruments, and want to determine under what circumstances which instruments should be chosen in a design project, then that’s more or less it.

Reply to 1# wullen: It is recommended to find reference books such as the \"Instrumentation Technician’s Manual\" and the \"Automatic Control Design Manual\". By referring to the actual circuits around us, and combining them with the \"instrument data sheets\" in the design drawings, one can match the diagrams with the actual devices. . Take it step by step, figure out the reasons behind each circuit, and over time you will become an expert.