Instruction Manual
IM-106-880, Rev 2.1
April 2017
OCX 8800
7-33
AI
Function
Block
OUT_D
PID
Function
Block
AO
Function
Block
OUT
IN
Differential Pressure Transmitter to Measure Flow
Situation
The liquid flow in a line is to be measured using the differential pressure
across an orifice plate in the line, and the flow measurement will be used
in a flow control loop. Based on the orifice specification sheet, the
differential pressure transmitter was calibrated for 0 to 20 in H
2
0 for a flow
of 0 to 800 gal/min, and the transducer was not configured to take the
square root of the differential pressure.
Solution
Table 7-24 lists the appropriate configuration settings, and Figure 7-12
illustrates the correct function block configuration.
Table 7-24. Analog Input
Function Block Configuration for
a Differential Pressure
Measurement
L_TYPE
Indirect Square Root
XD_SCALE
0 to 20 in.
OUT_SCALE
0 to 800 gal/min
Figure 7-12. Function Block Diagram for a Differential Pressure Transmitter Used in a Flow Measurement
Analog
Measurement
BKCAL_INBKCAL_OUT
Parameter
Configured Values
3
8
7
4
0
0
8
9
Содержание OCX 8800
Страница 2: ......
Страница 4: ......
Страница 10: ...Instruction Manual IM 106 880 Rev 2 1 April 2017 OCX 8800 ii ...
Страница 22: ...1 10 Instruction Manual IM 106 880 Rev 2 1 April 2017 OCX 8800 Figure 1 7 Optional Sample Tube Support ...
Страница 33: ...Instruction Manual IM 106 880 Rev 2 1 April 2017 OCX 8800 2 5 Figure 2 3 Adapter Plate Installation ...
Страница 70: ...Instruction Manual IM 106 880 Rev 2 1 April 2017 OCX 8800 4 6 Figure 4 4 LOI Menu Tree Sheet 3 of 4 ...
Страница 72: ...Instruction Manual IM 106 880 Rev 2 1 April 2017 OCX 8800 4 8 ...
Страница 88: ...Instruction Manual IM 106 880 Rev 2 1 April 2017 OCX 8800 5 16 ...
Страница 100: ...Instruction Manual IM 106 880 Rev 2 1 April 2017 OCX 8800 6 12 ...
Страница 164: ...Instruction Manual IM 106 880 Rev 2 1 April 2017 OCX 8800 7 64 ...
Страница 176: ...Instruction Manual IM 106 880 Rev 2 1 April 2017 OCX 8800 8 12 ...
Страница 185: ...Instruction Manual IM 106 880 Rev 2 1 April 2017 OCX 8800 9 9 Figure 9 6 Remote Electronics Housing Cable Connections ...
Страница 209: ...Instruction Manual IM 106 880 Rev 2 1 April 2017 OCX 8800 9 33 Figure 9 26 Electronics Housing Cable Connections ...
Страница 213: ......
Страница 217: ...Instruction Manual IM 106 880 Rev 2 1 April 2017 OCX 8800 10 5 Figure 10 2 Sensor Housing Components Sheet 2 of 2 ...
Страница 223: ...Instruction Manual IM 106 880 Rev 2 1 April 2017 OCX 8800 10 11 ...
Страница 225: ......
Страница 262: ...Instruction Manual IM 106 880 Rev 2 1 April 2017 OCX 8800 C 2 ...