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

Instrumentation Interview Questions

Questions Answers Views Company eMail

Difference between ultrasonic flow meter and radar type flow meter

Dodsal, Qatar Petroleums,

2 14307

WHAT IS A SYMPTOM OF FAULT WITH THE SPAN OF AN INSTRUMENT? 1)ZERO-POINT AND 100% ARE CORRECT BUT NOT A MID-RANGE. 2)ZERO-POINT IS CORRECT ,BUT 1005 INPUT IS NOT GIVING 100% OUTPUT. 3)LINEARITY PRBS. 4)1005 O/p IS CORRECT BUT ZEO POINT IS WRONG.

Reliance,

1 11966

Can a pneumatic control valve work without positioner?

SMC,

4 8279

How to adjust the zero & span of a control valve from the posiitioner(MIL)?

Bhel, SMC,

1 10454

WHAT IS SELF CLEAN ELCTRODE IN MAGNETIC FLOWMETER?? WHAT DO YOU MEAN BY THIS TERM??

IOCL,

2 9421

why to use 3 wire at RTD ? what's the reason for common wire ?

4 10823

What is the use of each wire in three wire RTD

GSPC,

2502

How to convert gpm into inches of eater.I nerd formula with example so pls help me.

1 4224

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

2125

Can anybody please let me know Orifice plate sizing calculation formula and step by step procedure

1994

Pls.could any one Clarify the following with an example. 1.At What condition Close on Rise and Close on Fall Pressure Switch contacts are used. 2.If Pressure is abnormal as per set pressure,if connecting Terminal of pressure switch breaks,how the voltage extends to Relay base. 3.Are these contacts come under fail safe philasaphy.

1 4487

how to set calibration range in a DP transmitter to measure level for a closed tank and for an open tank,and also please explain me how to set calibration range for a DP flow transmitter in a line ?

CCL Products, IOCL,

1 9421

While giving Power Supply of 24 VDC to a Transmitter,why Shield Terminal is connected either at Transmitter or at ISB.Why not Shield Terminal connected at both ends.If the Reason is to avoid Noise interference,which type of noice that is interfering.Is the Noice from the 24 VDC supply terminals or from any external source.

1 5643

what is ABB DCS SYSTEM?

OMV,

2 6557

How to find out the current of two motors having same power consumption but different RPM?

2007

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Un-Answered Questions { Instrumentation }

what is easiest way to read STL language in PLC?

3135

Tell me the field calibration procedure step by step with diagram of pressure gauge, pressure switch, pressure transmitter, temperature switch, level switch, flow switch, flow transmitter.

3209

where i can get training in INTOOLS and PDMS in Delhi-NCR OR north part of India. please reply with ur ans. at arunsamkaria@ymail.com

3543

i need some objective type questions in instrumentation

4896

dear sir we have insatlled positioner model no.sipart PS2 make Siemens at our control valves . now problem is if we want to increase the response of valve opening speedy /fast. what parameters do we change for positioner ? any idea. please guide us.

1890

How to calibration a control valve?

1166

please send the drdo exam paper

2389

on interface level transmitter model(RTG3302-EMERSON) What is threshold valve how can we select correct threshold value T1,T2,T3,T4 When interface water & hydro carbon

2151

Which is your favourite subject & explain any one topic of it.

9594

Questions on flow meters,few questions on HART protocol,

1993

I WANT SECURITY PAPER MILL, HOSHANGABAD TEST PAPER.KINDLY SEND TO MY MAIL ID

2787

what is the electrical operation procedure for switching on 27.6MVA electric furnace.

2030

how to calibrate 0- 150 psi presure gauge by dead weght tester

2011

please can any one tell me clearly about pid tuning i am confusing about this .how to tune pid easly?

2245

field bus transmitter calibration procedure tell me

1828

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