Emerson Rosemount 2051 Reference Manual page 39

Reference Manual
00809-0100-4101
Figure 2-25: Bubbler liquid level measurement example
A. Air
Let X equal the vertical distance between the minimum and maximum measurable levels
(100 in.).
Let SG equal the specific gravity of the fluid (1.1).
Let h equal the maximum head pressure to be measured in inches of water.
Let Range equal zero to h.
Then h = (X)(SG)
= 100 x 1.1.
= 110 inH
Range = 0 to 110 inH
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