what is the use of glycol filling in seal pot (or) condensate pot in instrument impluse line?
7 39503how do i tune dearator pr control valve using PID. we set the set point is 0.6kg/cm2 now i want 0.5 to 0.7kg/cm2 limits so what should i give p,i,d values. then pls explain how do set pid values for control valve tuning?
1458Please any one can explain how to calibrate transmitter (smart) online with out remove from the container suppose it is interface level or static pressure level measurement we dont want to remove transmitter from the container mean it is running plant please give me detail. thankx brothers
KNPC,
1 5478how can we tune a PID. If it is by zeiger nichols method..please explain briefly with help of an example.
KNPC,
1987In your own words, would you expect an ultrasonic level device to work better in a pressure vessel with a high pressure or a strong vacuum, and why?
1 4326What is the advantage of using locally fabricated hook ups over Pre fabricated hook ups in process instrumentation?
1575Post New Instrumentation Questions
Why humidity limit is 30 to 55 % for raw material storage?
why is an oxygen sensor used in a boiler stack
Can any one send me IOCL instrumentation question papers.. i dont know the pattern of the questions and what to prepare can any one help me on this .. my email id is anwarnishil@gmail.com
Why is the orifice tab provided?
What is frequency factor in massflow meter? When using frequency output?
In most instances, Inertia processes are quite uncommon. Give an example of a combined Resistance and Capacitance situation.Describe an application, which according to your understanding of the subject matter, comprises of both Resistance and Capacitance effects.
What is the difference between conductive lined pipe and conductive unlined pipe? Why do we see that?
what is the importance of CV in the control valves? how it is calculated?
How to do gas analysers calibration in AUTO and Manually by using zero and span gas?
Somebody can explain me about >Critical Loops, calibrations, ESD critical Loop checks, Logic Diagram / Cause & Effect checks for ESD loops,
What you mean by multi stage control vavles?
How do you identify between actual alarm and false alarm in a Temperature Transmitter in SCADA based Control System
how to calculate orifice sizing? and tell me if pipe size bet 50mm t0 200mm then we can use pipe flange??? and above 250mm pipe size should i use D & D/2 Flange? is it right or wrong?
In VVVF DRIVES VOLTAGE IS ALSO VARY WITH THE FREQUENCY. HOW? WHAT IS THE DIRECT FORMULA RELATING THESE TWO.
what are the use of belew gear in general ??