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Instrumentation Interview Questions
Questions Answers Views Company eMail

if we mount flow tube in arrow direction then flow comes in negative & if we mount it another direction then flow comes positive,So what will be the problem

 2 3897

if tx. dp increase or decrese what happend in the reading

BSP,

1 4161

how can calibrate vacume trasmitter by HART COMMUNICATOR ?

Bajaj, IMECO,

3 6310

What's the difference between cold loop test and hot loop test?

 5 40552

Can we calibrate an actuator?

Siemens,

5 10825

What is Cu-100 and Cu-1000 ? and tell me its application ?

2 5604

why we cant transmit the dc current easily

 1 4358

What is the Temperature Co-officient of Resistance of PT- 1000 and PT-2000 ?

Adani, Birla, MEIL,

2 8154

Consider a control valve action,the inlet air pressure is only 6 ksc but physically how it can be operate against 100 ksc line fluid pressure?

SCS,

2 6032

ABB DCS (AC 800 M)redundency take howmany milliseconds to switch from master controller to slave?should be less than DCS scanning time?

SCS,

2 5248

A DP Endress and Hauser flow transmitter is always tripping pump at low flow. set point is 74 cubic meter/hr. Thorough impulse line flushing and zero calibration has been done, yet problem persists. What do you think is the problem and how do you rectify this fault?

 5 6482

how works encoder in plc

 1573

Explain the usage of the PLC system?

 3 5196

Explain the difference between the types of input variables plc?

 1 4106

Is an analogue only transmitter as accurate as a smart transmitter?

SCA,

2 4216

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Un-Answered Questions { Instrumentation }

in natural gas indirect water bath heater,how to prevent the problem of backfire from firetube during ignition...becoz of this backfire performance of wbh is going low.

2279

How servomotor controls throttle valve of TURBINE?

1482

how u calibrate sox nox co2 co in cemps?what is opacity n HPm?tell the standard parameters of cems?

3183

hello can yoy pls send me previous papers of jindalpower and steel ltd.....'m from instrumentation..... mani1048@gmail.com

1568

How to calibrate smoke Dectector

1116




why we are using magnet for calibration of gas detector?

1793

Explain the mechanism behind the turbine meter.

683

what is the difference between active & reactive power?

1657

What is rang ability?

1778

Can please tell mi about SIOS, PRM, SERVER, and what is the diference between PIN LAN, PCS LAN,APC Server, and please send the Doc if possible for referance,mail id patil_amit17@yahoo.com

1439

Why are the uses 24vdc in industries

487

steps for installing orifice plate?

1348

what is commisioning procedure,2)what is is the main work in commisioning in the field tx to dcs, plz send me detail

1848

sir, give me placement papers and interview quistion of birla group company of copper.

2365

Explain the working of an enraf level gauge.

650

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