Taylor-Wharton EF-450 - Manual (Page 14)

Instrumentation Circuits
The instrumentation consists of a pressure gauge and differential pressure gauge. The pressure gauge (PI-1)
displays the inner vessel pressure in pounds-per-square-inch and kilopascals. The liquid level gauge (LI-1)
measures the difference in pressure between the top and bottom of the vessel. Product within the vessel
creates a higher pressure at the bottom of the vessel than at the top. Readings on the liquid level gauge are in
inches of water. This reading, when compared to the contents chart attached to the front of the vessel, allows
accurate monitoring of the amount of product within the vessel.
LI-1
PI-1
Figure 8: Instrumentation circuits highlighted in blue.
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