What does a light bulb symbol on a PID diagram with two stop valves connected above and below it represent?
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This post was last edited by WallaceLee on 2022-3-28 at 12:05. As shown in the diagram, there is a horizontal tank; next to it is a bulb-shaped symbol, and there are two flanged stop valves above and below it. I would like to know what the bulb-shaped symbol represents What is the function of the upper and lower connecting stop valves?
It is used to measure the liquid level in storage tanks; the two stop valves serve to cut off the flow, allowing for the replacement of the device used to measure the liquid level.
What is the purpose of remote level measurement?
Isn’t it marked as LIC on the diagram? Level gauge.
;P;P bulb~ It looks like a level gauge, with root valves at both ends to facilitate the replacement and maintenance of the level gauge!
1. That symbol that looks like a light bulb is the symbol used to represent the transmitter. (Actually it’s redundant; the LIC symbol is sufficient to indicate this.) 2. The valve is used to introduce the liquid-phase and gas-phase pressures to the level transmitter (in differential pressure level gauges), or to connect to a measurement conduit in order to measure the liquid level within that conduit (some types of level gauges come equipped with their own conduits).
It’s just an ordinary level transmitter, with two primary valves