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Instruction Manual
IM-106-880C, OI
September 2009
7-31
Hazardous Area OCX 8800
Figure 7-8. Analog Input
Function Block Configuration for
a Typical Temperature
Transmitter
Pressure Transmitter used to Measure Level in an Open Tank
Situation #1
The level of an open tank is to be measured using a pressure tap at the
bottom of the tank. The level measurement will be used to control the level
of liquid in the tank. The maximum level at the tank is 16 ft. The liquid in
the tank has a density that makes the level correspond to a pressure of 7.0
psi at the pressure tap (Figure 7-9).
Figure 7-9. Situation #1 Diagram
Solution to Situation #1
Table 7-22 lists the appropriate configuration settings, and Figure 7-9
illustrates the correct function block configuration.
Table 7-22. Analog Input
Function Diagram for a Pressure
Transmitter used in Level
Measurement (Situation #1)
38740085
Temperature
Measurement
To Another
Function Block
OUT_D
OUT
AI Function Block
38740086
16 ft
7.0 psi measured at
the transmitter
Full Tank
Parameter Configured Values
L_TYPE Indirect
XD_SCALE 0 to 7 psi
OUT_SCALE 0 to 16 ft