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Instrumentation Interview Questions

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

1523

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

4116

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

1465

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

7367

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

3746

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 =

1301

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

7546

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,

3614

pressure gauge measure static pressure or dynamic pressure?

7149

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

2987

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?

3003

temptrure me ketne frequiency hote hai

ME,

1725

what is formula mv convert to temperture

8906

what is the principal of coriolis mass flowmeter

3527

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

5441

our kks tagging is crossing more than 12 character please suggest how to take tags in the DCS

1519

how many type conductivity sensor ?

1461

god evening sir i am studying m.sc(tech)electronics &instrumention.am i elegible to all industies

1213

What is intrinsic safety mean.

1315

Explain the combusion chamber

1408

Programmable Logic control.

1350

how to calibrate electro pneumatic positioner 8013 mil controls ltd ?gsr

7135

2107

When doing a liquid seal on a differential flow transmitter , most of the time the sealing liquid will be heavier then the process fluid. For wich application will the sealing liquid be lighter than the process fluid if transmitter is mounted below the process line.

1239

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

1246

What is the advantage of using locally fabricated hook ups over Pre fabricated hook ups in process instrumentation?

1432

WHAT IS MEANT BY PROJECT MANAGEMENT STRATEGIES IN INSTRUMENTATION?

2836

1.can you use SCADA instead of DCS,DCS instead SCADA 2.Difference between DCS and PLC,can their role be reversed i.e. role interchange 3.Difference between RTU and PLC

1883

model question paper of instrumentation for Jindal GET 2010.plz reply sudhanshukumar08@yahoo.com

1715

Introduce yourself which is not present in your biodata?

1744