Instrumentation Interview Questions
Questions Answers Views Company eMail

what is the name of thermocople element cable from field to pannel end?

3 4802

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??

792

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 10930




what is the difference between cold loop and hot loop

2 9386

why we use 24v dc in instrument rahter than 230vac????

4 15562

why we use 0.2 to 1.0 kg/cm2 output in control valve

GNFC,

4 8094

in which application we use bigger size actuator

5 4561

diffrence b/w accuracy and precision?

HPCL,

4 4923




can we connect instrument earth pit to electrical earth pit, if not why?

2 13624

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 10849

What is Droop? What is Step/Gradient Limiter in Turbine Governor control?

1446

what is control valve input and out put

Nirma,

9 13164

what is thermocouple output

IPCL,

7 6290

What is principle of ultrasonic level transmitter?

3 6942

what is formula for calculating flow if i have pressure and pipe diameter?

1 1215


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Un-Answered Questions { Instrumentation }

We are using Rosemount 5400 series Radar Level Transmitters in all types of Sump Applications having oily water hdrocarbon petrochemical nature. What we are facing the problem frequently is that always getting reading frezzed at some value. If we do power recycling , sometimes it is working . then making same freezing problem. If anybody faced before such type of problem and also having solution , Please give the answer.

825


Hi Friends i am going to write BARC written test by this month 20th (20-5-2008). So please if any body knows the details about this or having previous question papers pls mail me to kkumarei@gmail.com. For Suggestions give one message to 9962122264

1002


can any one tell me when ongc placement test and its forms is available????/ pls tell me if u know

706


Q-Explain the different load conditions that will produced different offset which may or may not be acceptable to thhe control function

875


what is thermo coupler and how it works

3129


SOME OF YOUR QUESTIONS ARE NOT MAKING ANY SENSE SO TRY AND PUT IN A LITTLE BIT MORE EFFORT BEFORE YOU POST A QUESTION. WE WILL ONLY HELP THOSE WHO WE CAN SEE ARE TRYING TO HELP THEMSELVES.

1020


Meaning of the following a. IOP- Manimum; b. IOP- Maximu,;

616


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?

567


I have installed a RTD whose length is 2250mm(RTD stem length), but it's upper 200 -250mm is out of the reactor, and this upper 200mm stem is surrounded by atmospheric temp. And the lower portion i.e. 2000mm is in contact with the measuring fluid, then does the final measuring temp. Gonna change as the upper 200mm RTD stem is out of reactor?

707


how many type conductivity sensor ?

701


POSSITIVE PULSE IS APPLIED TO AN INVERTER INPUT.THE TIME FROM THE LEADING EDGE OF THE INPUT TO THE LEADING EDGE OF THE OUTPUT IS 10 ns. THE TIME FROM THE TRAILING EDGE OF THE INPUT TO THE TRYLING EDGE OF THE OUTPUT IS 8 ns. WHAT ARE THE VALUES OF tPLH and tPHL?

737


hello can yoy pls send me previous papers of jindalpower and steel ltd.....'m from instrumentation..... mani1048@gmail.com

683


what is the working principal of pribe

742


Draw a great bridge circuit.

692


How works weighfeeders in cement industry? what is the working principle?

663