Taylor-Wharton EF-1000 - Manual (Page 13)

BT-472 Rev. B
13
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. A digital gauge is also available that can be ordered fitted to the tank or installed in the field.
Isolation valves (V-7 and V-8) allow maintenance of the circuit without emptying and depressurizing the vessel. The
equalization valve (V-9) must be opened before the isolation valves are closed. Two ¼” female pipe thread connections
(CN-5 and CN-6) are provided to allow easy connection of telemetry devices or other differential pressure measurement
instruments. The connections are provided plugged.
Figure 8: Instrumentation circuits highlighted in blue.
V-7
PI-1
V-8
LI-1
V-9