Instrumentation Interview Questions, Answers for Freshers and Experienced asked in various Company Job Interviews

Instrumentation Interview Questions

Questions Answers Views Company eMail

tell me the field & lab calibration procedure step by step with diagram of pressure gauge, pressure switch, pressure transmitter, temperature switch, level switch, flow switch, flow transmitter, temperature transmitter, temperature indicator, flow indicator, level indicator, control valve, thermocouple, pressure indicator (digital & analogue),

2312

control modes

Vedanta,

1 6135

What is deffrence between Battery and capacitor

Siemens,

3 9220

What is micromotion transmitter? What is the porpose of using this transmitter?

Samsung,

2 7216

how many type of control valve?

10 29242

why use 4-20mA in the field of instrumentation?

8 28511

what is the difference between two wire transmitter and 4- wire transmitter

3 20612

what is the working principal of pribe

2296

What is 1:1 redundancy ?

2383

why 4ma show higher zero ? i have transmiter flow renge 0-1000 m3/h but 4 ma show in monitoring 200 m3/h and 20 ma show 1000 m3/h i want when 4ma show 0 m3/h and 20ma 1000m3/h

3 6133

What is the minimum rating availalbe for weld neck orifice in market?

Jindal,

1982

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

2303

In 2 wire transmitter 1 wire is used for power and other is used for signal( 4-20)ma In 4 wire transmitter 2 wires are used for power and 2 wires are used for signal (4-20)ma . but my question is "what is the criteria or parameters we have to consider while selecting these transmitters for eg( distance, safety zones etc.

1 5435

In oil & gas industries and petrochemical industries, there are classification of zones like zone 0, zone 1, zone 2. Is there any differences in voltages or power supply supplied for the process instruments, control instruments depending on the zones

1 10444

For an Instrumentation Engineer, is there any effect on Instruments of safety zones like zone0, zone1, zone2. As an instrumentation Engineer, what we have to consider or remember while working in these areas.( zones 0,1,2).

1 4540

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Un-Answered Questions { Instrumentation }

what is effect of specific gravity in differential level transmitter , explain formula related with this .

1652

what is compensation? temprature & pressure

2016

What are advantages and disadvantage of the ac supply load cell?

1056

WHAT IS THE DIFF. BETWEEN SKIN TEMPERATURE AND PASSES TEMPERATURE..?

2533

Explain the working of an electronic level troll.

1096

how many types of preheaters are in cement industry & what r they can any body explain?

1764

How to calculate P,I&D value in PID controller ?

2141

what is function of SCADA , and how is it work, explain with difination

2371

What are the materials available to prepare individually for competetive exams in Instrumentation field? Plz reply...

2090

how to turbine speed measurement?

1585

What is Droop? What is Step/Gradient Limiter in Turbine Governor control?

3402

hi i am eswar i want to know the instrumentation interview questations for eil(engineers india ltd) i have applied for engineer post in eil please help in this.my mail id eswar310@gmail.com

2562

In apron feeder how TPH is calculated?

1731

What are different types of control valves?

1603

How the sizing of the analog signal cable is calculate?

2529

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