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Instrumentation Interview Questions
Questions Answers Views Company eMail

How I identify to solonied coil which is 24v or 230v In our lab.because there is no tag.

MRPL Mangalore Refinery and Petrochemicals Limited,

1 10183

Can 2 transmitters be connected to Integral orifice meter taps? Does an integral orifice comes with 2 set of taps?

1 6205

What is the compensation of thermocouple

Samsung,

2 12542

Close loop and open loop diagram for instrumentation

Petron ltd,

1 5612

how to convert digital signal to analog signal in plc

UltraTech,

1 7252

Tyes of interface level measurement and how to use that technique for interface level measurement,

2003

why pressure 3-15psi is used as industrial standard and what is the reason

JAL International, UltraTech,

2 12944

what is the difference in Kg/cm2 and mmwc?

Niko,

2 7585

How we are blocking 40 kg or more pressure through only 6 kg instrument air in control valve 

3 8609

What is the formula of vabration sesore. i mean how to covert mils to volt plz share if any body knows   very argent : my mai is merajalam143545@yahoo.com

Samsung,

1801

How to calibrate radar lt type transmitter

NTPC,

1 6127

What is the live zero and dead zero

Samsung,

2 6906

Why rtd  out put is ohm how create the ohm 

Samsung,

1 4972

What is the difference between ff transmitter and non ff transmitter

Samsung,

1807

What is the diffrence between ff tx and non ff tx

Jindal, Rosemount,

2061


Post New Instrumentation Questions

Un-Answered Questions { Instrumentation }

In a gas over oil actuator, after the opening/closing of valve, how the gas is vented out? How does the hydraulic/gas circuit function?

1215


How can i test procedure grounding for CAT-7 cable? Or How can we test procedure CAT-7 Cable Electrically safe?

2307


why we are using magnet for calibration of gas detector?

1637


Why rdt and thermocouple both give different output .and one things more, how to generate  ohm or mili volt  plz mail me merajalam143545@yahoo.com

2108


What is critcal speed. what is resonant frequency. why we want to cross crtcal speed on higher RPM (early).

1486






Square root calculation for dp flow transmitter?

470


How to change dcs card in online. (Dsc is maxdna)

1953


What is eddy current? Describe the operating principle of proximity probe.

1602


what is commisioning procedure,2)what is is the main work in commisioning in the field tx to dcs, plz send me detail

1706


What is the calibration procedure of Drum level transmitter if range is 0 to -400 mmh2o in lab?

1517


What is the Working principle of Dozing valve?

1609


please send me some question papers of HPCL aptitude test ?? please send it to bipinb.28@gmail.com ...

1347


Specify eight technical requirements that you would consider important, when deciding upon a particular control valve?

1281


What is the difference between modbus,fieldbus & profibus

1674


what is SIL 1 2 3

1318