Regarding the notation of instrument tags on the process flow diagram
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As shown in the figure, when I saw the instrument tag numbers presented this way in the flowchart today, I didn’t understand what it meant. I checked the table of contents but couldn’t find any relevant legends. Gentle experts, does anyone understand?
It was probably written in a concise manner; maybe there wasn’t enough space, or perhaps it was out of laziness. Just understand it based on its meaning – it actually refers to two items: TI20104A and TI20104B. This isn’t anything complicated at all; we even have items labeled A through F here. .
This should involve the use of two thermometers, with two temperature-sensing elements inside one casing for measurement
Do these two expressions mean the same thing?
There should be a specific explanation for this at the beginning of your PID pipeline flowchart; take a look for yourself
I couldn’t find any relevant instructions; I took a look
We have all of these; normal instructions are provided at the beginning. As for yours, it’s unclear what the situation is. For A/B, it’s certain that dual thermometers are being used, while the other aspect is still up for discussion
Yes, I can’t tell whether the letter in the middle is an N or a wave line. . .
Check the pipeline numbers in the instrument index table
There should be two sets of temperature sensing elements on a single gauge