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

Instrumentation Interview Questions

Questions Answers Views Company eMail

hi... i'm about to learn siemens plc i came across following question in my mind ... plr ans 1. hw motor operated by plc 2. hw drive operated by plc explain dis by both ladder logic diagram and hardware config , connection

KCP Cements,

2 3603

What does it mean 3/2 sov

5 6696

what is use single seated and double seated valve?

Doha Petroleum Construction DOPET,

2 4718

what is the difference b/w normal thermocouple and skin type thermocouple?

Heisco,

1 3937

Why 4mA-20mA current loop selected as standard ???

IMCO, Reliance,

1 4474

Single acting ON-OFF valve. it is air to open. when sov energized , valve will be open, so during that if air fail then what will be the condition of valve ( open or close ) ???

4 6005

why we use impulse line of flow transmitter at 45 deg. angle both side of orifice plate.

2389

how to change 4 wire rtd transmitter into a 3 wire rtd transmitter? as our transmitter is working for 4 wire rtd, what should do for working on 3 wire rtd transmitter

HHJ,

1 3751

what is the working principle of dis-placer type level transmitter

Sendan,

1 3075

What is the solution if rotork motorised control valve showing pink Colour in dcs.

Bhushan Power Steel,

3 4741

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

Petro Rabigh,

1709

Somebody can explain me about >Critical Loops, calibrations, ESD critical Loop checks, Logic Diagram / Cause & Effect checks for ESD loops,

1692

what is skin thermocouple?

3 4891

what type problems create in radar level transmeter and what is its solution

Essar,

2 4477

steps for installing orifice plate?

Bhushan Power Steel,

1848

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Un-Answered Questions { Instrumentation }

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

1119

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

2382

line up procedure for dp type flow transmitter?

1902

applications of plc in printing and packaging?

2204

kindly sent some demo question and answer

2069

Please tell me details about Sox,Nox,SWAS analyser????

3728

How u measure the massflow in orifice flow measurement techniques

1407

What is instrumentation measurement?

1113

what is effect of specific gravity in differential level transmitter , explain formula related with this .

1652

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

components of control circuit belongs to control valve

1659

Instrumentation symbols interpration, P& ID, Logic diagram analysis, Electrical drawing analysis.

1958

Difference between dcs and plc including date processing and architecture.

1132

IN CONTROL VALVE SPECIFICATIONS GENERALLY TERM " DE- 200" ."DM -400"USED,, WHAT IS DE/ DM STANDS FOR?

2229

how we are selecting instuments by differentiating certain instruments in 4 to 20 ma range and certain in 1 to 5 v dc

2079

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