what is cascade loop and how it work and why it used instead
of PID single loop?
In cascade, Which loop is faster and slower?
Please explain with loop drawing and example...
Answer Posted / mithilesh kumar
cascade loop is the combination of two pid control.
where 1st controller output ie mv is the input of 2nd
controller.
1st contrroler more fater than second controoler.
it's used in boiler three element.
it's control feed water flow,drum level and steam flow.
drawing is not possible here.
but i am trying.
controller checked steam flow as well as drum level then it
gived command to control valve as per requirement.
| Is This Answer Correct ? | 6 Yes | 9 No |
Post New Answer View All Answers
What you mean by multi stage control vavles?
draw shematic diagram of c/v positioner(smart type)?
what is scale factor of proximitor & unit of the vibration.
define feed forward control loop with example and drawing?
you are on site,the plant trips,you are approached by operations,what do you do?
what is a good line as ic engineer as maintenance ,oc, project, calibration ,validation engineer?
Draw symbols of the following :
why is an oxygen sensor used in a boiler stack
In turbine what does term CDP, NH, HSSOC means.
where proximity sensor installed on tank in loading arm application
Instrumentation Safe Guarding test. How to determine the interval time of the test. eg:Halfyearly,Every year,Every three years etc.
while am calibrating Drager polytron 2IR flame gas detector occured non zero status.how can i get zero status?
what would be the minimum flow rate that we can measure on rotameter..?
what are the steps I have to deal with?
line up procedure for dp type flow transmitter?