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Instrumentation Interview Questions
Questions Answers Views Company eMail

how to commission furnace ( water heater)

Petrofac,

1504

Full form of KKS when use DCS.

 2605

how to measure the output of RTD given the general formula of  rtd.  

 2 4922

How to calculate the flow rate in Vortex flow meter?What is K factor?Can you give me an example calculation to understand the same as better?

npcc, Zadco,

1 3470

What is the potential contact / output??

Vasava Engineering Private Limited,

1 2416

How to convert 0-2500mmH2o into kg/hr? Or how to convert mmH2O into kg/hr,t/hr etc

 2 32935

How many interlocks at turbine? Plz explain briefly

MRPL Mangalore Refinery and Petrochemicals Limited,

1527

In dcs contol valve parameters showing like this Gain=1 or 2 , ti=7 sec, td=20sec. But temp,pressure,level control valves we are using in which type parameter side using ti,td clearly tell me

 1 3666

In field side transmitter voltage droping here no loose connection then what will happen?

Edac,

2 3931

how eddy current loss in probe and induced gap voltage accros probe trip and shaft

Reliance,

1 3591

how to adjust relay in smart positioner ?

SipChem,

1 3129

HOW TO CALCULATE ACCURACY OF AN INSTRUMENT. WHICH IS COMPITABLE FOR USE.

ABB, NTPC,

1806

How to do manual mapping in radar type level transmitter?

 2 11599

What is first echo & echo window in radar type level transmitter?

 1275

What is frequency factor in massflow meter? When using frequency output?

PCMIL,

1320

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Un-Answered Questions { Instrumentation }

please someone tell me what is function of vibration sencer and how many types and how to control viberation.please. my id is jimmykhan077@gmail.com

1364

how to calibrate 0- 150 psi presure gauge by dead weght tester

1492

How d.p. Transmitter can be applied to open tank?

642

Dear Friends, we are planning to design Power distribution and Fiber optic in the same cabinet.Like Front side Fiber optic and Rear side Power distribution.Is it any possibility of problem occurs like interference etc? Your answer is highly appreciate.

1741

How is work 5/2 sov?

1382




which type of zones used for boiler? & why ?

1428

plz tell me clearly about PID.."when v have to change I value,D value,GAIN??

1686

how will you check torque value during Factory acceptance Test for control valve/ESD ON/OFF VALE how will you confirm this torque value is being correct, Which document will you be refer.

2015

what is droop in governer ,type of droop ,how it work

1764

how do we commission inergen system?

1427

How many interlocks at turbine? Plz explain briefly

1527

What do you know about gail?

2048

What are the application of bernoulli’s theorem?

684

A DP transmitter is used to measure the level of an open tank. The drain line of the tank is connected to a control valve, and is configured as, if the level of the tank is 90% the valve should get open 10%. And if the tank level is 10%, the valve should get open 90%. Draw wiring diagram and explain how to configure DP transmitter and control valve using HART communicator. If the span error at output is 1%, what will be the %opening of the control valve at 60% level of the tank?

875

how the arrangement of equipments done in control room

1589

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