Identification of pipe fitting codes in PID diagrams
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Hello, experts. I have been in the chemical industry for less than a week, and I am currently learning about PID diagrams. I’m not quite sure what devices are represented by some of the circles in these diagrams, so I would like to ask the experts for their help. For example, what do PCPTGIO stand for, or are there any resources available that can explain the meaning of these letters?
PC – Pressure control; PT – Pressure transmission. Take a look at the basic information on reading chemical process diagrams!
TG temperature display, io interlock signal
Check out the materials after downloading; they are very detailed
Take a look at the homepage image; everything is listed there – various valve diagrams, pipe numbers, and instrument function codes are all annotated
I suggest you take a look at the image on the home page; the circle there represents a local pressure gauge. If there is a box behind the circle, it indicates the sensor for a remote-mounted gauge