Chemical Engineering - Process Control and Instrumentation - Discussion
Discussion Forum : Process Control and Instrumentation - Section 4 (Q.No. 1)
1.
The time constant of a unity gain, first order plus time delay process is 5 min. If the phase lag at a frequency of 0.2 rad/min is 60°, then the dead time (in minutes) is
Discussion:
2 comments Page 1 of 1.
Kuldeep said:
2 years ago
Tan^-1(-5x0.2)-Tdx0.2 = -60xπ/180.
pi/4 +0.2Td = π/3.
Td = 5π/12.
pi/4 +0.2Td = π/3.
Td = 5π/12.
(2)
Bashir said:
5 years ago
Please explain this.
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