What do FI, TI, and PI mean in a process flow diagram?
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I saw a process flow diagram with these symbols on it; I’d appreciate it if someone could explain them to me
This post was last edited by ylb913 on 2014-12-31 09:34. FI stands for flow indication, TI stands for temperature indication, and PI stands for pressure indication. It is recommended that the original poster download HG/T 20505-2000 \"Functional Indicators and Graphic Symbols for Process Instruments and Control Instruments\" to take a look.
The first few pages of a PID diagram usually contain explanations of the letter codes
The abbreviation for indication is I. FI stands for flow indication, which refers to the indication of flow rate. TI stands for Temperature indication, which refers to the indication of temperature. PI stands for Pressure indication, which refers to the indication of pressure
Haha, a newbie. . . . . . . . .
It’s specified on the first page of the drawing: flow rate, temperature, pressure~~~indicators
With the help of the main building, I would like to ask: there is a tag inside the heating furnace labeled “BI unit, in m”. What does that mean?
Check the legend on the first page of the PID diagram; all the explanations are there
FI: Flow indication [or flow display]； TI: Temperature indication; PI: Pressure indication ；