[JST-015] One-on-one Q&A on chemical process control and instrumentation [Technical update to floor 1818]
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This post was last posted by * aojiaoya0546 edited a special post for technical discussants on 2016-6-28 19:37. Please feel free to ask questions! My specialty: Chemical process control and instrumentation work experience: 18 years of working experience in Sinopec, including design, on-site maintenance, engineering, DCS/SIS systems, equipment management, and occasionally doing technical service output and sales. I will try my best to answer any questions you may have! illustrate: 1) This post mainly talks about issues related to chemical process control and instrumentation, to communicate with each other and improve together. 2) This post is designed for one-to-one discussion between the person seeking help and me. Other friends are also welcome to participate in the discussion. If you are not satisfied with the reply, please post a new topic in the instrument communication area. Thank you for your cooperation! 3) Any personal offensive replies are prohibited, and if necessary, apply for banning.
This post was last edited by hxm2087 on 2012-7-5 19:26 to support the original poster! After seeing your signature, I actually have a good impression of the NASS solenoid valves. The kit suppliers usually equip us with AIRTAC solenoid valves, which are relatively cheap, but I am not very satisfied with the quality. Can you upload some NASS solenoid valve information for everyone to share? Especially the more comprehensive selection samples.
It's a bit depressing. Don't you even have the patience to pay attention to the title? ! On the one hand, many questions have been raised, but here it is deserted! some. . . . . .
Support the landlord with this question: 1. I would like to ask if you can give a clear definition of interlocking. The one on Baidu seems to be for what kind of railway. Can the poster give a more detailed definition of interlocking in chemical industry based on his own understanding or if there is any reference book? 2. Regarding the selection of the control scheme, although the selection of the control scheme is determined by the process, the instrument major is only responsible for its implementation. Regarding how to implement this process from the process requirements to the instrumentation, can you recommend some relevant books or information? Thanks
Interlock: My understanding is to satisfy the preset logical conditions or states of process or equipment, safety, etc., so as to correctly execute the associated logical actions (no missing conditions, malfunctions, infinite loops, etc.) and achieve the preset result of safe state locking! Books on control schemes, to be honest, I only read some books on chemical process control and chemical unit operations! Recommend some books from East China University of Science and Technology Press! Moreover, it mainly comes from the accumulation of time and experience in the industry!
Is there any introduction to the diaphragm + capillary style pressure transmitter of the high-pressure synthesis tower? Several models or manufacturers?
You can inquire about the products of major companies, or ask for samples! ROSEMOUNT 3051 series, YOKOGAWA EJA series, HONEYWELL, ABB, etc.
This post was last edited by shell at 2012-7-17 10:20. The 2012 CONTROL GLOBE Annual User Best Product Award was announced.: This is the web link address: http://www.controlglobal.com/art ... ards.html ?page=full ； 1. Execution agency: http://www.controlglobal.com/00_ ... 1-CovStry-Fig10.pdf 2. System: http://www.controlglobal.com/00_ ...-CovStry-Table1.pdf ； 3. Others (tools, weighing, etc.): http://www.controlglobal.com/00_ ... 1-CovStry-Fig11.pdf ； 4. Gas, analysis: http://www.controlglobal.com/00_ ... 01-CovStry-Fig9.pdf ； 5. Pressure temperature: http://www.controlglobal.com/00_ ... 01-CovStry-Fig8.pdf ； 6. Liquid level: http://www.controlglobal.com/00_ ... 01-CovStry-Fig7.pdf ； 7. Traffic: http://www.controlglobal.com/00_ ... 01-CovStry-Fig6.pdf ； 8. Safety barriers, cables, terminals, I/O systems, etc.: http://www.controlglobal.com/00_ ... 01-CovStry-Fig5.pdf ； 9. Digital instrument: http://www.controlglobal.com/00_ ... 01-CovStry-Fig4.pdf ； 10. Control software: http://www.controlglobal.com/00_ ... 01-CovStry-Fig3.pdf ； 11. Industry ranking: http://www.controlglobal.com/00_ ... -CovStry-Table2.pdf The above information is for your reference! There are a lot of differences between usage performance and domestic use! ! !
Sir, I am a newbie. I have only been in the instrument industry for less than two years. I feel confused. I don’t know whether to insist on continuing in the instrument industry. I feel that many things are easy to learn on the surface, but when I go deeper, I feel very stressed. Can you give me some instructions and suggestions?
It should be said that a good instrumentation professional must have worked in a relatively large continuous process industry for more than 5 years, and have a good master to teach him, coupled with a complete organizational system and a relatively finely managed factory, he will achieve great growth! Two years of majoring is a transitional zone. Once you get over it, you will have new growth! The key is to combine it with the scene, think more about theory and do more!
Inquire about how to select the diameter and wall thickness of the pressure guiding pipe of the instrument and what is the basis?