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

Instrumentation Interview Questions

Questions Answers Views Company eMail

How much flow is passing through 6 inch line? There are no gauge, no any transmitters in line.

3 6447

What is megering????

2 15636

waht is difference between pressure transmitter and transuducer

Gasco,

4 7887

There are two chlorination tonners both are connected to two pressure swithes and the pressure switch is connected to SOV which operates the valve to changeover the tonner selection i.e if pressure one tonner goes low the other tonner should come in line if it is inautomatic selection design a circuit using relays ?

2015

what is input and output cards of plc needs to be hot swappable mean

1 5607

why magnetic flow meter is not used in thermel power plant operation

JK Paper,

2 6928

How does milli volt is created in themocouple?

Jaypee,

2 6237

How does pyrometer works?

1 7598

Why we are using temperature and pressure as a reference when measuring flow of steam?

Shell,

4 9477

What is Process portal A(PPA)?

ABB,

1 5893

How Many Slave Can be used in one slave ?

2 5512

what do you mean by cathodic protection?

Saipem,

1 5881

what is Best Among SINK Or SOURCE Type Design In Digital Signal, Either Iput Or Output? WHY?Can any one..

Accer, Reliance,

2206

what is the difference between transmitter and smart transmitter ?

Aditya Birla,

4 9390

what is loop folder?

Bapco Bahrain Petroleum Company, Hyundai,

1 25936

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Un-Answered Questions { Instrumentation }

Why thermo wells are used? What materials are used in thermo wells?

1176

what is instrument philosophy

2332

What is the differerence between hysterisis and linearity.

2376

why use 50% lel methane gas concentration for gas detector calibration instead of 60% lel gas concentration whereas the hi alarm set at 60% lel.

2795

What is the diffrence between ff tx and non ff tx

3261

what is difference between HOT permit and cold permit

2288

How to calibrate capillary type level transmitter

1834

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

2184

steps for installing orifice plate?

1899

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

2714

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.

2382

What is profibus?

1193

1.what is the power consumption of three element drum level control in sugar industries? 2.how to reduce that?

1691

few questions on RS 232,1 question on relationship of impedance and turns ratio, many questions on flowmeters

2095

What types of Instrumentation Related Questions can an Interviewer ask in a Telephonic Interview ?

2566

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