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Instrumentation Interview Questions
Questions Answers Views Company eMail

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

1278

i/p converter always for supply pessure from 3~15 psi only !! And from where this converter bleed the air.

2 3663

what is the process for double acting cylinder pneumatic for 32' v/v

1196

My flow transmitter range is 0-1000mmwc.DCS range is 0- 100m3/hr.What is correspond out put in terms of milliamps if my flow is 65m3/hr

4 6550

Coriolis flow meter coil supply is 24vdc but why still we given 230ac for this transmitter let me explained detailed review please

Shell,

1 3311

Q1: Consider part of a control loop, which excludes the transmitter, consisting of a process, a controller and a control valve which may be represented by two dead times of 0.5 min each and three exponential lags of 0.8 min., 1.0 min. and 1.5 min. respectively. We wish to express this system as an overall first order plus dead time (FOPLD) model ie gain, time constant and process dead time. (We will see later that this is often done, to simplify controller tuning). For this exercise, gain is considered to be 1.0. (A) If the transmitter is a flow transmitter whose behaviour can be described by a dead time of 0.2 min. and an exponential lag of 0.5 min. in terms of the overall dead time and overall first order lag how can the system behaviour be approximated ? Overall dead time = Overall time constant = (B) If the transmitter is a temperature transmitter with a temperature sensor in a protecting well whose behaviour can be described by a dead time of 0.7 min. and an exponential lag of 15 min. how can the overall system behaviour be approximated now? Overall dead time = Overall time constant =

1045

What are the Components of Siemens S7 300 Series PLC system ?

Siemens,

1 7111

1)why we are using mostly Ultrasonic Flow meters to measure flow, rather than Radar waves? 2)why we are using Ultrasonic waves and Radar waves to measure the Level?

NTPC,

1 3181

pressure gauge measure static pressure or dynamic pressure?

3 6494

Air pressure in a pressure vessel can rise or fall at up to 2.5kpa/s.The pressure is sampled every 0.5 seconds.If range of the the pressure indication is 0 to 1500 kPa, what is the max value of the error due to sampling in % of Span

2 2448

a pressure transmitter with a range of 0 to 2500kpag has a specified accuracy of 0.5 % of span.It is to be calibrated using a comparison gauge to have an accuracy of 0.1% of span.The comparison gauge has a range of 0 to 3000kpag What is the accuracy ratio? is this ratio acceptable?

1 2575

temptrure me ketne frequiency hote hai

ME,

1438

what is formula mv convert to temperture

Sterlite,

4 8176

what is the principal of coriolis mass flowmeter

1 3117

1 > HOW TO MEASURE INTERFACE LEVEL 2 > DIFFERENCE BETWEEN RADAR & ULTRASONIC LEVEL TRANSMITTER

Atul Auto,

3 4776


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Un-Answered Questions { Instrumentation }

What is difference between Ionization heat and bimetallic heat

733


What are the error values can accepted in flow transmitter calibration?could u give any formula for this?

954


what is the process to make control schematic ?

1286


Draw block digram for well head from well to shipping pump?

1340


Somebody tell me in what way i need to prepare for csio pgrpe(adv instrum eng)interview?what all the quest can i expect?

1602






Explain bernoulli’s theorem. State its application.

225


give me all the details about the interview and which type of question being asked

1356


i am having information technology branh ....... can i prepare for psu exam

1273


what is zero and span ?

784


I m appointed as an automation trainee engineer in small firm in that I am only the one , my company give me a project on s7-200 as i m beginner I don't know how to program so please send me the helpful site so that I complete my project before deadline....please help me out in this critical situation.

940


how to calculate control valve bonnet size?? or how to select its material?

1397


what is compensation? temprature & pressure

1196


Can any one send me IOCL instrumentation question papers.. i dont know the pattern of the questions and what to prepare can any one help me on this .. my email id is anwarnishil@gmail.com

1233


can we copy the software from a transmitter using hht(hart 275) ?

1235


Explain PID, ON/OFF, Controls

1132