Rosemount OCX 8800, Instruction Manual

Page: 132 / 266

Instruction Manual
IM-106-880, Rev 2.1
April 2017
OCX 8800
7-32
Figure 7-10. Function Block
Diagram for a Pressure
Transmitter used in Level
Measurement
Analog
Measurement
Situation #2
The transmitter in situation #1 is installed below the tank in a position
where the liquid column in the impulse line, when the tank is empty, is
equivalent to 2.0 psi (Figure 7-11).
Figure 7-11. Situation #2
Diagram
16 ft
Empty Tank
0 ft
2.0 psi measured at
the transmitter
Solution
Table 7-23 lists the appropriate configuration settings.
Table 7-23. Analog Input
Function Diagram for a Pressure
Transmitter used in Level
Measurement (Situation #2)
Parameter Configured Values
L_TYPE Indirect
XD_SCALE 2 to 9 psi
OUT_SCALE 0 to 16 ft
AI
Function
Block
OUT_D
OUT
BKCAL_IN
BKCAL_OUT
PID
Function
Block
OUT CAS_IN
AO
Function
Block
CAS_IN
3
8
7
4
0
0
8
8
3
8
7
4
0
0
8
7