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Instrumentation Interview Questions
Questions Answers Views Company eMail

What is the difference between Error and Offset.

1 14317

What s the exact height of installed transmitter?

1 3840

What is the reason PT speed not incresed in gas turbine?

ROC,

1687

What is the difference between sdv and bdv ?

1 15607

why we should maintain neutral earth voltage below 1V while calibration? why cant it be 1.2V or 2V

Hospira,

1817

a laways iface problem with brine level transmitter sealing diaphram a laways giving error and maximum reading i made re range and adjust with side glass but during commission it giving gap reading between it and side glass i need help from expert to explain how to calibrate it. note:dp transmitter yokogawa company

1 2721

We do have a problem in the company that is one PT connected to PlC which is mean 1 out of 1 in PLC system we do have the PAHH is 55 mbar and PALL 8 mbar with a timer of 15 sec for the PAHH the problem started when PAHH goes more than the set point which is 55 it reached up to 71 but due to timer doesn't trip . We force it and we checked everything nothing there . We replaced the transmitter problem still there the reading goes more than the 55 bar the range for transmitte is 0- 60 mbar . So we did loop check , aculaizing valve , wiring all are okay . What the possible causes for this ???

National Petrochemical Company,

2 4039

why we are using ungrounded RTD sensor and what is difference between grounded RTD and Ungrounded?

1 12434

I want to use 1/2 inch SS316 tube in my high pressure & temperature (64 kg/cm2 & 500 deg C)after condensate pot in pressure tranmistter. 1) Is it possible to use 1/2" ss316 tube in high pressure and temperature line. Tube manufacturer is local vendor. 2)On sarting the plant, We need to do system fluse that time condesate is not in the condesate pot so steam is directly contact with the tube. We have no exact calculation to know our tube is ok or nor at this time. pleae,reply.

1 4315

in rotark mov in display err msg showing how to remove the error

1 3478

what is disadvantage of field bus (ff)type of instrument

1 5468

what are different types of cables used in instrumention how to calibrate a level transmitter online ( rosemount )

1 10364

how do we commission inergen system?

1287

what are the on/off valve precaution?

Reliance,

1 6350

if RTD damage in plant, how we know?

Reliance,

5 9909


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Un-Answered Questions { Instrumentation }

Difference between 2-Valve Manifolds, 3-Valve Manifolds and 5-Valve Manifolds 3 with diagram

2459


what is dc moter.

1602


how to calibrate electro pneumatic positioner 8013 mil controls ltd ?gsr

7138


In bently nevada vibration monitoring system,what is the reason to maintain the Resistance of the probe + extension cable equal to 95 ohm? If possible explain the basic principle of measurement with detail electronic circuits.

2302


what is the different between deflection type measurement and null type measurement in RTD?

1261






How to calibrate Magnetic flow Transmitter in Field

478


Differentiate between ultrasonic flowmeter and radar type flow meter

504


Type of level transmitter commnly used in Procees area are the following. a.________________This type of level transmitter works as follows

1420


Which language of programing is popular? how can i learn it ?

1536


How to calibrate displacer type level transmitter (chemtrol make )for level measurement in hotwell , LP & HP heater ?

5232


What is the use of control cable?

512


what is the process to make control schematic ?

1563


sir, i preparing hpcl,ongc,barc,hal exams(instrumentation engg)pls send a placement papers

1714


please send data bank of quetions answers on analytical instrumentation.

1298


What is the difference between working pressure and calibration pressure of a control valve

2366