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

Instrumentation Interview Questions

Questions Answers Views Company eMail

Somebody ask me how many size of control valve what is mean of control valve size?

2 5193

what deference between panel earth and systemearth

Tecnimont,

2326

In control valve proximity inductive sensor is taken as digital feedback for full open and full close.Normally its volts 24v when the sensor acts the feed back voltage 14v so that our relay not indicating in plc panel . kindly give the solution.

1969

What is input and output of vaiberation transmitter and what is its unit.

SMH,

4 9314

What is input and output of plc & dcs

2 5921

What is TMR

3 10338

Where are use of pressure,level,flow switches?and what is input and output

3 7442

What is differnece between leveltroll and interface leveltrol?

2 6404

How many types of sensors are used in instrumentation & what are names

CTC,

1 4371

What types of thermocuple are mostly used?

6 10367

(1) In turbine, what does term CDP, NI, NH, HSSOC, means. (2) What is the purpose of LO overhead tank in turbines.(3) An equipment is certified for EEX, IA, IIC,T6, what do you under stand by this.(4) what is SURGE, and how it is prevented, what is the purpose of bypass valve across AS valve.(5) Give 2 application of quartz crystal used for process parameter measurement.(6) what is meant by cold float of compressor shaft. (7) 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.(8) what is meant by Gap voltage, in vibration measurement. Normally how much Gap voltage is set and state the reason.(9) what will the new flow factor if D/P transmitter is Re-Ranged from 25” wc to 50” wc.(10) what is the usage of QDV & Volume booster.

ADMA OPCO,

4045

What is the purpose of LO overhead tank in turbines.

ADMA OPCO,

1 2927

what is the usage of QDV & VOLUME BOOSTER

ADMA OPCO,

2315

what barrier is used in process industry.

ADMA OPCO, Process Industries,

3 7130

what is meant by cold junction compensation. where it is used.

SRACO,

1 6096

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Un-Answered Questions { Instrumentation }

Please can anybody help for control valve sizing step by step procedure?

2127

What is profibus?

1122

need instrumentation job completed 1 year trainee ship in mnc pesticide company. now in search of job

1886

I am manjunath having exp in maintenance of chemical plants,know i want to do a design course INTOOLS,after doing design course can we get jobs in design field.sinve i dont have design exp..

1744

how to calculate signal cable sizing? and multipair cable sizing??explain in brief?

2353

Can Any body tell me how to check Modbus Settings in ER300N L&T trivector meter?

2595

Calibration procedure for water rotameters

2193

How you calibrate absolute pressure with the calibration range of 0 to 1000 0C Absolute. Please explain the procedure for calibration.

1709

Why the ammonia and Nitric Acid level indicators is with millimeter ? and What is the conversion form millimeters that level indicator indicate to weight ?

1845

can u briefly explain aboutan aryton shunt multirange DC ammeter?

2742

What are the interlocks we have to check during the start up of LP/HP compressor?

2003

Explain why use mmwc unit?

1047

What is instrumentation instrumentation engineering?

1102

What is the use of temprature compensation?

1151

what are procedure of sox-nox calibration

2972

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