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Instrumentation Interview Questions
Questions Answers Views Company eMail

State bernoulli’s application.

503

What is zener diode? What is voltage regulator?

490

What is solenoid valve? Where it is used?

466

What materials are used in thermo wells?

475

How process line mpm calculation is done?

647

What is the constant voltage unit?

487

How d.p. Transmitter can be applied to close tank?

458

What is modbus?

506

What is furnace draft control?

479

How can a d.p. Transmitter be calibrated?

485

What is force balance principle?

552

What is difference between differential pressure & delta pressure?

479

Explain the working of an electronic level troll.

447

Explain the use of hair spring in the pressure gauge.

493

What are different types of control valves?

523


Post New Instrumentation Questions

Un-Answered Questions { Instrumentation }

Why humidity limit is 30 to 55 % for raw material storage?

3367


How to work togather like sov,limit switch,proxy switch and booster in xv

3578


how to design orifice plate?what is the equation?

1477


any one can send me instrumentation previous interview papers? I prepare for MNC Company Interviews? my mail id- Rakesh.Golla@dodsaldxb.ae , and another mail rakesh.gvk@gmail.com

1368


What is modbus?

506






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

1718


what happen if i increase height of displacer type LT.accuracy or sensitivity are affected.why?

1868


Which are all the commonly used Bordon tubes in the pressure gauges. Do any one use ASTM A 312 tubes for this purpose?

1128


What is the Working principle of Dozing valve?

1620


What are different type of instrument cable

1642


what is orfics working in main steam line. is it increase pressure, velocity of steam flow and dicrease steam flow rate. or any other

1471


What are different types of orifice plates? State their uses.

482


How to Calibrate Level Troll in field

508


I was working on calibrating turbidity transmitters endress+hauser at effluent polishing plant.We calibrated using NTU buffers.What happened is that when we immersed the sensor, everytime we raise and lower the sensor gradually, the reading will vary.my question is that is there any specifications on what is the required distance from the bottom of the container with buffer to the face of the sensor?Is it ok to install the sensor in a medium which has turbulence specially if bubbles are present?

1577


why we are using drum level control valve air to close?

1446