Instrumentation Interview Questions
Questions Answers Views Company eMail

yogokowa field bus system transmitter all's we are geting IOP fault in Contiunes please help me fine how we can normal the broblems?

ABB,

4 23510

If the vibration probe near to the shaft,then output voltage will be decreased r increased?How?

Amtek, Hamsco, IJT,

1 2127

Specify ideal accuracy of flow element like orifice plate, Ventury, Annubar. Ultrasonic flow meter etc.

1477

What is the basic difference between 2 Wire, 3 Wire and 4 Wire RTD

2 9914

What types of Instrumentation Related Questions can an Interviewer ask in a Telephonic Interview ?

Cairn, Honeywell,

2037

What is the procedure of changing a Faulty Module of Allen Bradley PlC without stopping the Process

Siemens,

1 4522

What are the materials use for COntrol Valve body?

KNPC, Qatar Petroleums,

1 3295

What information needs for Control Valve "sizing"

Qatar Petroleums,

1 6097

If I want to buy a pressure switch & 3-way valve for hot water application then witch parameter I should consider.

1 2881

what are level of automation & how these are distinguished ?

3 4529

When we will do simulation for I/P?IF WE DO SIMULATION through which way either series or parallel?

TVS,

1 3762

how can I install "operating system " in may HART communicator? It is damaged, and it doesn't boot up.

ARPC,

1 2849

Can be operate control valve without positioning if yes ? how and why?

Focus,

4 5699

what is the T/C & RTD mesuremaint?

3 6382

Level in tank under vacuum (Ex: Condensate Tank of Power Plant)is measured using D. P. type level transmitter. Tank is subjected to vacuum of 755mmHg. Is it possible to fill wet leg ( i.e. leg connected to top of vessel with low point of D. P. xmtr) with water?. Are there chances of water getting sucked under vacuum? if yes, what is the solution?

3 4630


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Un-Answered Questions { Instrumentation }

Calculate the maximum pressure drop that can be allowed to occur across a control valve, so that we can prevent cavitation / flashing from occurring. Use the following formula: Δ P allow = Km (P1 – PvapourA) where, Δ P allow - the maximum allowable differential pressure for sizing purposes, or terminal pressure drop; Km- the valve recovery coefficient from the manufacturer’s catalogue; P1 - absolute inlet fluid pressure; PvapourA - absolute fluid vapour pressure at the inlet temperature; Use Atmospheric pressure = 101.3 kPa, P1 = 1200 kPa(g), PvapourA = 4 kPa, KM = 0.72

1642


In turbine what does term CDP, NH, HSSOC means.

1325


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

1850


Is it ok, to use non-contact type Radar type LT, on a tank that is half circular from the bottom side? If yes the, isn't the waves gonna bent in other directions? 

1705


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

1505






What is Erosion in a control valve?

1555


Define the terms Accuracy, precission, Spam, process tolerance while doing calibration of an instrument? Explaini with an example?

1554


how to check earthing,what is minum ohms for proper earthing

1506


HOW CREATED LP & HP PRESURES IN DRUM FOR DRUM LEVEL MEASUREMENT!

1426


What are different types of control valves?

681


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

3050


field bus transmitter calibration procedure tell me

1337


What is the use of each wire in three wire RTD

2039


IN CONTROL VALVE SPECIFICATIONS GENERALLY TERM " DE- 200" ."DM -400"USED,, WHAT IS DE/ DM STANDS FOR?

1749


HI, can anybody give details about GAS TREATMENT PLANT CONSTRUCTION,as INSTRUMENTATION ENGINEER what are the responsibilites.what are the instruments mainly instrumentation engineer will deal with

1601