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Instrumentation Interview Questions
Questions Answers Views Company eMail

If we increase D what will be the controller action?

2 5718

Can anybody explain what is the different between ESD & PLC

ADCO,

1 3252

what are the possible reasons if a control valve fails to open/close?

DEWA,

1 7411

Can anybody explain about wellhead control system.

1 2952

What is the different between ESD & PLC.

1 6883

why temperature transmitter is showing ambienttemp.but 21.5ma. alarm AO showing at the display &how to sloves this problem.

2 6165

what does mean by analog output trim and where this one used for?

1 8603

Which boiler is use in power plant

Jindal,

1 5586

what sud u do if u dont get feedback from control valve?

Siemens,

1 7543

what is difference between positioner and position transmitter in control valve

2 15467

suppose, after calibrating a transmitter we fixed it in a process line. At live zero condition the Tx shows 4.5 mA. what should we do to make the Tx show 4 mA? If we adjust zero, will it not affect the calibration?

ABG Shipyard,

4 8162

Sitrans LR460 Radar level transmitter getting level out or disturbed level during moisture present in the material ie coal in the pccb bunker in CHP.Any suggestions for this problem...????

ABG Shipyard,

1 4701

Explain , how timer based pneumatic control valve will work ?

1 3710

what are the documentation and instrument identification system used to identify the correct device to be calibrated? name atleast three.

1 7096

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

1886


Post New Instrumentation Questions

Un-Answered Questions { Instrumentation }

How to measure the dust in chimney(spm)?

4147


Programmable Logic control.

2005


Can u tell me the principle of the tc,rtd,level switch,pressure switch ,transmitter(pr flow level temp.),vibration...plz

2104


Lux meter is the measuring device to measure the lux level of lighting fixture. in industrial sector two types of lighting fixture is being used as street lighting purpose 1. HPSV (Sodium) and 2. HPMV (Mercury). HPMV having white light which is an combination of red, blue and yellow colour, while HPSV haivng Yellow lighting. in HPSV red & blue colour will be absent. during measurement of the lux level of HPSV and HPMV fixture. 1. Lux meter can measure the actual lux level of both fixture? 2. or it will show false reading for HPSV fixture light as it has only yellow light present. please give me answer

4719


flow transmeter accuracy 0.075% of full scale & find ucertainty is 0.025 % so what is maximum limit band of uncertainty

2366


How to calibrate Magnetic flow Transmitter in Field

1317


we have level transmitter for h2s04 storage tank capacity 10k ,always there are failure of transmitter due to failure of magnetic floats ,please come up with solutions at the earliest.

2126


How flow can be measured with dp?

1206


draw shematic diagram of c/v positioner(smart type)?

2274


How will you test a transistor with a multimeter?

1150


which type inter lock use in petrochemical refinery,and oil & gas?

3070


What are the maximum packet size of: a) HART b) Profibus DP c)Profibus PA d) DeviceNet e) Foundation Fieldbus

5918


How to calibrate an pressure gauge with yantrika test bench?

2952


how will you segregate the alarm levels in alarm management system during factory Acceptance Test

2450


what is the importance of CV in the control valves? how it is calculated?

2503