|
|
|
|
|
|
TEST
YOURSELF: Calculate the optimum PI for this non self-regulating (NSR) process.
1. Data captured using a paperless recorder of a level decreasing process
2. Data captured using a chart recorder of a level decreasing process
1. Td = 4 s, RR = 0.03896 / s, P = 17.3%, I = 13 s
2. Td = 4 s, RR = 0.03891 / s, P = 17.3%, I = 13 s
Your answers should not differ much from mine.
F.G. Shinskey: Process
Control System of 4th Ed. p99
For liquid level loop: P
is between 5 - 50% and I is between 60 s - 600 s