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Rosemount Model 8800C Vortex Flowmeter with FOUNDATION
TM
Fieldbus
B-10
Figure B-5. Function Block Diagram for
aPressureTransmitterusedinLevel
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 (see Figure B-6).
Figure B-6. Situation #2 Diagram.
Solution Table B-5 lists the appropriate configuration settings.
Analog
Measurement
AI
Function
Block
OUT_D
OUT
PID
Function
Block
AO
Function
Block
BKCAL_IN
CAS_IN
CAS_IN
OUT
BKCAL_OUT
16 ft
0ft
2.0 psi measured at
the transmitter
Empty Tank
FIELDBUS-3244MV-3244A_02A
TABLE B-5. Analog Input Function Block Configuration 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