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  Question  Asked @ Answers Views     select
 
what is the name of thermocople element cable from field to pannel end?  3  1652
when the instrument tapping on pipe line is located below and transmitter is located above the tapping point for liquid service transmitter, what should we do, is there any additional drain valve is required??  0  178
when the instrument tapping on pipe line is located below and transmitter is located above the tapping point for liquid service transmitter, what should we do, is there any additional drain valve is required??  2  2360
what is the difference between cold loop and hot loop  2  3052
why we use 24v dc in instrument rahter than 230vac????  4  4045
why we use 0.2 to 1.0 kg/cm2 output in control valve GNFC  4  2464
in which application we use bigger size actuator  5  1278
diffrence b/w accuracy and precision? HPCL  4  1863
can we connect instrument earth pit to electrical earth pit, if not why?  2  3945
If we interchange HP and LP tapping in drum level measurement and reverse LRV & URV correspondingly.What is the difference between the normal tapping(HP,LP) and reversed tapping(LP,HP)?  2  3324
What is Droop? What is Step/Gradient Limiter in Turbine Governor control?  0  468
what is control valve input and out put Nirma  7  2773
what is thermocouple output IPCL  5  1707
What is principle of ultrasonic level transmitter?  3  3369
what is formula for calculating flow if i have pressure and pipe diameter?  0  331
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Un-Answered Questions
 
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Define the difference between a stable versus an unstable controlled system and some of the tools you might use to be able to detect when this is happening and assumptions used for control system application design that could contribute to instability 156  
Dear Sir/Madam,im going to attend Hpcl written exams on feb 17th in instrumentation stream..can anyone send me the HPCL model papers and pattern of HPCL ....i ve not yet attended anything in HPCL...so i dont know how it comes...so just i need some model test papers and pattern ..pls help me friends... 277  
What is the difference between uv and ir scanners? and what is the workig principle of both 411  
There are many type of control cable like pair,core,tried, What are defination each one 186 Birla
There is a problem with our HART475 it is not communicating with smart devices error becomes "NO DEVICE FOUND"we have insert 250ohm resistance as per requirement but invain plz tell me the solution? 195  
Thermocouples work as follow: 153  
Instrumentation Safe Guarding test. How to determine the interval time of the test. eg:Halfyearly,Every year,Every three years etc. 95  
-/5A. What is the meaning and limitations of this in energy meter constant. It is a 3 phase LT Energy Meter. If this Energy Meter is connected through a CT of ratio 200/5 Amps, then what is the multiplying constant and how its will be calculated. 86  
what is disadvantage of field bus (ff)type of instrument 9  
how u choose thermowell lenght n pnumatic C/v size? 142  
I have completed B.E. Instrumentation & control in 2009. i have 3 year industrial job experience in chemical plant.now, I want to join M.E. in external. so, Plese say easiet way and good institute name. 112  
Sir , i have completed my M.Sc In Instrumentation and presently working in Maintenance department 3 yrs Exp , is there is any possible for work in offshore .. 177  
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