Instrumentation Interview Questions, Answers for Freshers and Experienced asked in various Company Job Interviews

Instrumentation Interview Questions

Questions Answers Views Company eMail

Guy's need your support,I want to measure closed tank level which is under vacuum -630mmHg using DP Transmitter, tank fluid density 1.38, Tank height is 7ft

icl,

4 6824

Before erect the instrument what should you do?

L&T,

3 5737

Explain about safety integrated level protection? . How it was differ from other protections ?

1824

why Fahrenheit unit of moistur analyzer transmitter

Infosys, Samsung,

2289

how many types of orifice plates?and explain about it?

Kesoram,

2 5054

I faced several time siemens ps2 positioner automatically getting Chang in it's set point direction after auto calibration So is there any causes biside this or any permissives ?

1904

What different types of problems do occur while doing the loop checking? and please explain in detail or mail me at kadam.aniket143@gmail.com

Operational Energy Group, Process Control Technologies,

1 3290

what different types of problems do occur while doing instrumentation commisioning and how to solve them? please explain in detail

Process Control Technologies,

1804

Anybody can tell me how to convert mmHg2o /psi to scfm please give me formula of conversion

Samsung,

1967

What is the reverse action and direct action

Samsung,

2 5837

How to calibrate DP transmitter by using HART communicator ?

1 5159

How to Calibrate the magnetic flow meter on site ?

MRL,

1 3927

Can u tell me the principle of the tc,rtd,level switch,pressure switch ,transmitter(pr flow level temp.),vibration...plz

Adani, SRF,

2107

I am using 971 Enraf radar level transmitter for LPG tanks ,the tank side indicator gives the error code 999999999FL can any body give me any diagnostic for this issue?

2260

How can I map a tank? Tank 15m h and 42m dia. we just fixed radar type lit. its reading shows over range. Now its required mapping ?

CMC,

1 3402

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Un-Answered Questions { Instrumentation }

how will you segregate the alarm levels in alarm management system during factory Acceptance Test

2450

how to calculate range of level transmitter?

2399

Turbidity analyzer working principle ?

1841

Explain how thw analog to digital converter works with the circuit diagram

2730

TECHNICAL/ARTITUDE

2307

How to calibration a control valve?

1213

What is exact difference between the panel earthing and system earthing in DCS system. What is the value of resistence.

2714

What is the meaning of wet leg

1335

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?

1948

What is the use of single seated valve?

1137

Is there any relation between Artificial Intelligence and Instrumentation?

1209

hi sir yhis is zahid ali i am preparing for the jspl at oct.4.please send me the recently updated sample paper.

2235

can anyone can let me know in Eurotron Micro cal 2+ calibrator in milli amps source mode we are not able to get 20 milli amps output it only produces 1.52 milli amps out, but display shows increase in milli amps , and err6 displays, let me know how to remove the err 6.

2329

What are the charcterstics of a P&ID controller block for Governor speed raise or lower for a load sharing functionality between 4 Gas turbines in droop mode.

3080

Why we are using reverse action in displacer types level transmitters on some Vessels?

2606

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