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

Instrumentation Interview Questions

Questions Answers Views Company eMail

Briefly describe instrumentation job

1 2923

I HAVE GOT TYPICAL PROBLEM WITH THE TEMP.INDICATION. THE PROBLEM IS THE K-TYPE T/COUPLE OUT PUT IS CONNECTED TO A INDICATOR.THE INDICATION FLUCTUATES SOME TIMES AND SOME TIME IT IS STABLE. WHEN I CHECKED OUT PUT OF T/COUPLE THE MV WILL NOT VARY. WHERE AS INDICATION FLUCTUATES. WHEN I GIVE MV SOURCE TO T/COUPLE EXTENSIONCABLE FROM THE FIELD IT INDICATION IS STABLE. WHEN GIVE MV SORCE TO INDICATOR ITS INDICATION IS STABLE. PLEASE CLARIFY.

5 7245

generally transmitter power supply having some range(12v to 35v) but the out put(4-20 mA) must same for given input.If we vary the power supply voltage then output mA also to be change according to V=IR. Is there any voltage regulator in the transmitter ?

1 3833

2 5142

How would i calibrate a new commissioned flow transmitter???

3 7512

WHY WE R NOT USING THE TURBINE FLOW METER IN THE STREAM SERVICE ? pl explain?

3 6036

1)how we calculate the drum level? and how we select the transmitter range?

3 10023

what are the steps to follow force a particular input or out put from ics triplex esd system?

1 3261

what is the function of a zener diode ?

Honeywell,

2 7432

in which mode of the zener diode act when load voltage is approximately constant

1 3878

In thermocouple could we use the lug for termination or not,Thermocouple is any time,I am currently concerned with K type.please let me know if anybody know

Saudi Aramco Shell Refinery Company SASREF,

4 11029

I am manjunath having exp in maintenance of chemical plants,know i want to do a design course INTOOLS,after doing design course can we get jobs in design field.sinve i dont have design exp..

1744

what is mass flow meter principal?

GIL,

4 8635

Someone Please tell me what are the Pre-Commissioning activities in a Thermal Power Plant for an instrumentaion Engg.

2544

why is honed type flow orifice plate? what purpose it used? how to select this?

4 17749

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Un-Answered Questions { Instrumentation }

What is zone,loop/fire alarm system?

2663

Which types of quections asked in interview for FORMULATION PLANT (PHARMA)

6708

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

3069

Isometric drawings are generated during _________________ phase of a project

2081

what is stroke check for field instument transmetter's & AOV's

2200

why we use 3 wire rtd direct wiring for temperature measurement instead of temperature transmitter like bearing temperature

1826

What is wet leg condition and why is it used?

2043

3. Differentiate between ultrasonic flowmeter and radar type flow meter.

2949

how to rectify the poor signal strength in utrasonic digtial flow meter ,model:ge digital xce868i

1266

Give an example where you had aproblem on the job, and tell me how you solved the problem. and the finalvoutcome.

2242

How to calibrate Magnetic flow Transmitter in Field

1270

why we r opening HOT BYPASS valve during startup of a compressor?

2098

how can i check vortex shedder bar it is ok? if there is ohms condition are shown correct?

2220

what is isloted barrier how it works and what are the main purpose.how it make safe area.

2132

Can anybody please let me know Orifice plate sizing calculation formula and step by step procedure

1994

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