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Instrumentation Interview Questions
Questions Answers Views Company eMail

how u choose thermowell lenght n pnumatic C/v size?

 1661

describe flow nozzel principle?

SEWA,

2069

what is controlling card in dcs? how u measure dcs memory?what is bus in dcs?how u know dcs speed n ehternet speed?

 1493

what is written on orifice plate?

 4 7143

how u calibrate sox nox co2 co in cemps?what is opacity n HPm?tell the standard parameters of cems?

 3185

what is piezo electric transducer?its principle?

 2 5100

how u calculate ai/di/ao/do capacity in ur dcs?

 1 9240

how u calibate pr tx without master tx?

 2 4116

how u calibrate pneumatic n motorized c/v?

 1524

diff between dead wt calibrator n pressue comparator?

Invensys,

4 9496

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?

 1722

Why DP transmitters are subjected to high static pressure test of 100 bar. Though they will be used for very small pressure range

HPCL,

4 8306

Calibration procedure for water rotameters

HPCL,

1746

How to measure density of oil in your kitchen. i.e indirectly to verify the quality of oil using min. gadgets available in the kitchen/house.

HPCL,

1 3661

give me all the details about the interview and which type of question being asked

Jindal,

1789

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Un-Answered Questions { Instrumentation }

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

1509

Explain an adaptive / self-tuning controller’s major draw card.

1850

selection criteria of control valve? and selection criteria of actuator explain in brief?

3642

What is voltage regulator?

625

what is RTV function in in process control?

2616




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

8981

What are the error values can accepted in flow transmitter calibration?could u give any formula for this?

1392

hi sir yhis is zahid ali i am preparing for the jspl at oct.4.please send me the recently updated sample paper.

1682

Isometric drawings are generated during _________________ phase of a project

1605

what is the process to make control schematic ?

1722

send me HPCL paper

8313

what is the process for double acting cylinder pneumatic for 32' v/v

1623

Displace type LT to be calibrated in workshop, wt. 40, dia- 60 mm, density- 0.8kg/cm3.

1428

What is 3 selection available when configure the burnout protection for controller

2055

Explain working principle of lvdt?

623

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