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Instrumentation Interview Questions
Questions Answers Views Company eMail

What is heating effect?

Process Control Technologies,

2419

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 6377

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

Process Control Technologies,

1 15142

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,

2544

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

Process Control Technologies,

2665

Why 1-5 vdc a standard?

Process Control Technologies,

1 7927

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 6109

what is all types of analyzer in water production plant?

Marafiq,

1 3337

flow transmitter formula?

BEMCO, Siemens, Yokogawa,

2868

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 4622

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

2287

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

Tecnimont,

5 10969

Boiler flame scanner working principle?

Bhel,

1 7295

Why boiler chimney area  oxyden sensor fixing? 

NTPC,

2565

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

Qatar Petroleums, RKS,

2 5887


Post New Instrumentation Questions

Un-Answered Questions { Instrumentation }

what is the procedure of belt scale calibration?

2493


What is intrinsically safe system?

1206


Explain bernoulli’s theorem.

1115


what happen if i increase height of displacer type LT.accuracy or sensitivity are affected.why?

2531


why use 50% lel methane gas concentration for gas detector calibration instead of 60% lel gas concentration whereas the hi alarm set at 60% lel.

2802


How to Calibrate Ultrasonic flow Transmitter in Field

1320


how to turbine speed measurement?

1634


There are two chlorination tonners both are connected to two pressure swithes and the pressure switch is connected to SOV which operates the valve to changeover the tonner selection i.e if pressure one tonner goes low the other tonner should come in line if it is inautomatic selection design a circuit using relays ?

2023


How to calibrate smoke Dectector

1678


what is the difference between -24 : +24 & 0:24 and where it use?

2133


what is KV and XV valve

1848


What is loop1 and loop2 in MTS LT?

3909


What is shielding effect?

2304


what is a half wave, full wave, and bridge rectifer.

1838


full process of gas turbin?

2163