jkate
Mechanical
- Nov 5, 2011
- 66
A project I'm working on has an atmospheric tank with level float switches installed. The floats are LSH (level switch high) and LSHH (level switch high-high). When the water level in the tank activates either the LSH or the LSHH, a strobe light on top of an auxiliary alarm panel illuminates as well as indicator lights on the front of the same alarm panel. What is the proper symbol to use to show this scenario on the P&ID. My initial thought was to show individual bubbles with LSH and LSHH in them. Off of those two bubbles I would have a bubble for each with two solid horizontal lines indicating an auxiliary panel. What letters do I put in those bubbles? Is it "YL" for Event, Light or "LL" for Level, Light? Lastly, in should the bubbles with two solid horizontal lines be inside a square box because the lights "share" the alarm panel with other lights?
Thank you.
Thank you.