Instrumentation Interview Questions
Questions Answers Views Company eMail

What is heating effect?

Process Control Technologies,

1873

Why is the length of cable layyed from RTD to temp. Transmitter should be minimum? Why does heating effect takes place in their?

Process Control Technologies,

1 5432

Why do we use triad cable for RTD to Temp.transmitter connection? Why we don't use 3 core cable?

Process Control Technologies,

1 13767

What are continuances of connecting earthing and shield of branch cables (instrument to Junction box), at the same earthing pot provided on JB? Is it ok, or may produce some problem? 

Process Control Technologies,

2014

Why do we have earthing cable in branch cable and shield in the same cable?

Process Control Technologies,

2145

Why 1-5 vdc a standard?

Process Control Technologies,

1 7156

Hello Friends do you know this answer of this Question? Which color you would use when there is Somthing not correct or need to change In P&ID? i mean color that use for highlight that need to update in P&ID. Yellow Highlighter ? Red color ? Blue Color ? Appreciate for your answer. Thanks Blue Color

2 5129

what is all types of analyzer in water production plant?

Marafiq,

1 2421

flow transmitter formula?

BEMCO, Siemens, Yokogawa,

2357

Flow tax range 0 to 100 mmh2o ,flow rate 40 tons /hr, I want change flow rate example 42 tons/hr so tx range ?

2 3626

Describe how to use megger to measure the earth resistance and insulation resistance

1701

why we use the 4-20 mamp signal used for transmitter.

Tecnimont,

5 8475

Boiler flame scanner working principle?

Bhel,

1 6322

Why boiler chimney area  oxyden sensor fixing? 

NTPC,

2042

How to calculate flow of air bubbler type level transmiter  According hight and density 

Qatar Petroleums, RKS,

2 4704


Post New Instrumentation Questions

Un-Answered Questions { Instrumentation }

components of control circuit belongs to control valve

1231


what is gas metering system? gas chromatograph? and gas compressors?

1960


what is the input to be given in digital flow meter during the the calibration time?

1736


How earthing can be checked????

1962


I want to buy a seal kit of a pneumatic power cylinder.But I don't know it's specification.So please help me to know its specification.

1500






Why do you want to work here

1816


what is compensation? temprature & pressure

1564


What is the principle of capacitance type level transmitter?

670


What is 3 selection available when configure the burnout protection for controller

2062


What is ultrasonic flowmeter?

633


how can use ram

1478


Manipulation of dead wt. tester double piston type.

1504


Explain bernoulli’s theorem. State its application.

677


What is the calibration procedure of Drum level transmitter if range is 0 to -400 mmh2o in lab?

1681


where proximity sensor installed on tank in loading arm application

1524