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 6654

Before erect the instrument what should you do?

L&T,

3 5587

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

1744

why Fahrenheit unit of moistur analyzer transmitter

Infosys, Samsung,

2232

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

Kesoram,

2 4915

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 ?

1853

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 3198

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

Process Control Technologies,

1752

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

Samsung,

1906

What is the reverse action and direct action

Samsung,

2 5738

How to calibrate DP transmitter by using HART communicator ?

1 5070

How to Calibrate the magnetic flow meter on site ?

MRL,

1 3840

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

Adani, SRF,

2055

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?

2208

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 3322

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Un-Answered Questions { Instrumentation }

What is the minimum rating availalbe for weld neck orifice in market?

1980

what step is taken for ESD ( emergency shut down) in DCS REPLY to hashimka20009@gmail.com

2323

How to calibrate an pressure gauge with yantrika test bench?

2907

Explain signal isolator

1161

Can combine control system for Emergency control system (ESD)and Fire & Gas System ( F & G) is possble to built and offer to client? Can such system is as per Norms in India?

1988

can u plz send me technical questions asked in SCHNEIDER ELECTRICAL technical paper?

4728

Definition of reverse and acting controllers:

2315

what is scale factor of proximitor & unit of the vibration.

2140

what is dc moter.

2227

why we are using magnet for calibration of gas detector?

2248

Difference between ultra sonic flow meter

1993

give me the formula for analog to digital converter and also d to a converter

2838

, Instrument Index, P&ID review, I/O schedule, datasheet, DCS / Analyzers specifications, loop diagrams, hook-up drawings.

8099

A length of steel pipe is used to carry sea water to a desalination plant. An adequate corrosion allowance must be specified and indicated in the piping specification, which affects the _________________________ of the pipe

2248

use of split range ? where it is used ? in which control loop it is used ?

1968

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