Rules for compiling instrument tag numbers across the entire plant.
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Recently, we have started assigning uniform numbers to the company’s instruments. I was wondering if anyone has any good suggestions regarding the rules for assigning instrument tag numbers throughout the plant? AA-BBBCDEFZ: Some believe that 2 digits should be added at the beginning as a code for the device or system unit, with AA BBB serving as the function code. For example, FV and FI, etc.; the CD refers to the various components within a device or system unit, while EF is the sequence number of the instrument circuit. Z is a multi-part suffix. What do everyone think? Are there any other opinions regarding this formatting? What is commonly seen are the 3 digits following the function code. Or 4 digits represent the device and instrument circuit number. 4 bits can generally be used for how many sites? How much can it be used if expanded to 5 digits? Dear design experts, please share some good suggestions. Under the standards.
Comply with HG/T 20505-2014 \"Functional Indicators and Graphic Symbols for Process Measurement and Control Instruments\".
It’s not that I have standards; it’s just that I don’t want to use an old standard like 1981. They’re all older than me. In this era, things are changing rapidly. Don’t go by the old calendar right now
For the workstation numbers of a factory or several devices, as long as the standards followed are suitable for the application, there is no necessary connection with the year when those standards were introduced. Since standard revisions are carried out based on the applicability and relevance of the standards, there is no reason why a standard, even if it is old, should remain applicable. Do you know how many years these Chinese municipal units, such as chi, jin, dao, and ling, have been in use? They are still being utilized today. Some standards need to be improved over time, but some simply do not need to be improved because they remain valid throughout.
What format did you end up using?
I have also encountered issues regarding the rules for assigning instrument tag numbers throughout the plant. After reviewing the standards for functional indicators and graphic symbols you shared, I would like to ask about point 2 of section 3.2.4: The numerical identifier for the instrument circuit should consist of 3 or more digits, such as -*01, -*001, -*0001, etc. The asterisk symbol can be any digit from 0 to 9, or it can be a numerical code related to the unit number, sheet number, or device number. So is the numbering format proposed by the original poster also acceptable?
In accordance with the standards, make appropriate improvements within the permissible range, ensuring that it is easy to distinguish and remember.