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),

2310

control modes

Vedanta,

1 6128

What is deffrence between Battery and capacitor

Siemens,

3 9215

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

Samsung,

2 7211

how many type of control valve?

10 29228

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

8 28499

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

3 20596

what is the working principal of pribe

2293

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,

1980

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

2300

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 5434

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 10440

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 4536

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Un-Answered Questions { Instrumentation }

Instrumentation symbols interpration, P& ID, Logic diagram analysis, Electrical drawing analysis.

1955

explain key exchanges in all security modes WPA,WPA2,TLS?

2046

what is the reset offset and control system in instrumentation

3610

What is 3 element control system

1487

How to work temperature gauge?

1868

There are many type of control cable like pair,core,tried, What are defination each one

2148

How you calibrate absolute pressure with the calibration range of 0 to 1000 0C Absolute. Please explain the procedure for calibration.

1709

flow transmitter formula?

2810

I need to know steps to Calibration Valve Guard......

1486

Introduce yourself which is not present in your biodata?

2434

what is a vortex flow meter,mass flow meter and electromagnetic flow meter.particular use of this.means in which condition particular meter is used.

2233

Draw a great bridge circuit.

2014

what is interface level measurement.who can calibrate interface level measurement transmitter online

2516

Give 2 application of quartz crystal used for process parameter measurement.

2014

How many interlocks at turbine side?

1926

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