Chemical Engineering - Process Control and Instrumentation - Discussion
Discussion Forum : Process Control and Instrumentation - Section 1 (Q.No. 1)
1.
Which of the following is an undesirable dynamic characteristic of an instrument ?
Discussion:
12 comments Page 1 of 2.
Bewnetu Dinkie Endeg said:
2 weeks ago
Very nice question. Thanks for explaining the answer.
Ayushi Soni said:
5 years ago
Thank you so much @Vivek S.
It's really helpful.
It's really helpful.
(3)
Vivek S. said:
6 years ago
1)Static characteristics:
- Desirable.
* Accuracy, Repeatability, Reproducibility,
* Sensitivity.
- Undesirable.
* Drift, Dead zone, static error.
2)Dynamic Characteristics:
- Desirable.
*Speed of response, Fidelity.
- Undesirable.
*Time lag, Steady state error.
- Desirable.
* Accuracy, Repeatability, Reproducibility,
* Sensitivity.
- Undesirable.
* Drift, Dead zone, static error.
2)Dynamic Characteristics:
- Desirable.
*Speed of response, Fidelity.
- Undesirable.
*Time lag, Steady state error.
(23)
Veerendra yadav said:
9 years ago
Time lag is the main immportent charecterstics of the instrument.
(3)
Mukesh said:
9 years ago
All are static characteristics except time lag or time delay.
Rajan verma said:
9 years ago
Time delay increases the stability by increasing the PM, so how it could be an undesirable dynamic characteristic?
RIMJHIM said:
1 decade ago
Dead zone is corresponds to that range of input frequencies for which output does not change even on changing the input(in that particular range only).
Sankarvinayaka said:
1 decade ago
No mixing occurs it is normally due to sharp ends at the corners.
Bala said:
1 decade ago
For a good instrument time lag should be zero then only we can get the reading as it is that's why it is undesirable.
Sunil Kumar said:
1 decade ago
All are static characteristics except time lag or time delay.
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