In a P&ID diagram, what is UL?

2019-05-13View Original

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As shown in the figure below, what does UL represent? It’s not specified in the legend.

Reply #22019-05-13

Check the data sheet; it’s either a throttle device or a flow meter

Reply #32019-05-13

It might be a multivariable differential pressure flow meter; you can check the data sheet

Reply #42019-05-13

Got it, it’s an ultrasonic flow meter, ULTRA SONIC. Still, thanks to the two people above.

Reply #52019-05-13

For ultrasonic flowmeters, the symbol in HG/T 20505 2014 is US.

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In a P&ID diagram, what is UL?

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