Multiple Level Gauges on Vessel Bridle

[processeng2014]

Please help me demystify the reason why sometimes multiple, smaller level gauges will be used instead of one larger gauge for bridles on oilfield vessels. I am aware of the need for multiple gauges if two liquid phases are present, but this is not what I am talking about.

Is there a standard gauge length that is used (ie 24") instead of ordering a "custom size"

Is there concerns over weight or stability?

I know this is sort of a trivial question but I would like to understand why I see so much variability in level gauge applications.

Thanks

 

[georgeverghese]

Would this be influenced by the level range being monitored in the vessel - shorter LGs' for narrow ranges, and longer LGs' for wider ranges?

 

[Compositepro]

The main reason is to use "standard" gage lengths and to keep the nozzle structural loads low. Long gages are heavy and have more issues with thermal expansion.

 

[EvenFurther]

Exactly what type of level gage are you referring to?