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

Instrumentation Interview Questions

Questions Answers Views Company eMail

how to wire from pressure transmitter to marshalling panel and panel to controller and controller to dcs plz give the answer with example .

2 5345

what is surge and how is it prevented, what is the purpose of bypass valve across AS valve.

ADMA OPCO,

1968

what is the usage of QDV & VOLUME BOOSTER.

ADMA OPCO,

2 5158

What is the purpose of LO Overhead tank in turbines.

ADMA OPCO,

2004

Explain level troll principle & interface level measurement.

ADMA OPCO,

1 3908

In turbine what does term CDP, NI, NH, HSSOC means.

ADMA OPCO,

2584

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

ADMA OPCO,

2138

Give 2 application of quartz crystal used for process parameter measurement.

ADMA OPCO,

2013

State four different types of flow measurement, for gas flow measurement MMSCFD is the common unit expand the unit and specify significance of word S in the unit.

ADMA OPCO,

2020

Where is the flow transmitter installed with respect to control valve, state reason.

ADMA OPCO,

1 5964

How to measure the vibration..?

Madhucon,

1 5632

What is the working principle of sox, nox analyzer?(opacity monitor) Otherwise how to measure the sox,nox?

Thermax,

1 19569

How to measure the dust in chimney(spm)?

Thermax,

4092

Why we are using PLC instand of DCS in ESD System? can u explain any one?

2 5585

what is function of ESD , and how is it work, explain with difination

Bapco Bahrain Petroleum Company, BMB,

1 4109

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Un-Answered Questions { Instrumentation }

How to Calibrate Temperature Switch in field

1312

Identification of ss fittings, pilot valves, relief valve.

1828

How to calibrate an pressure gauge with yantrika test bench?

2904

selection of the zener barrier for the hazardeous area zone 0

2254

Explain the working of rota meter.

1214

Turbidity analyzer working principle ?

1779

Why plc require in analog input 4-20amp & 0-10 volt?

1135

sir ,iam in dem urgent need of HPCL Paper of Instrumentation Branch plz send me at your earliest convenience at ujjwal_sharma1983@yahoo.com

2508

How can measure flow in oil line?which type of transmitter is generally used?

4212

why we use 3 wire rtd direct wiring for temperature measurement instead of temperature transmitter like bearing temperature

1822

it is possible to check the fail safe condition in pressure transmitter. if possible how?

1407

What is limitation of the ht.of the displacer of a level trol?

2393

How we can check the 2 wire proxy switch? & how it is connected to DI MODULE OF PLC?

2601

all questions related to instrument technician in any offshore oil and gas company.

21671

what is basic difference between motion balance and force balance in pneumatic instrument?

9665

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