Instrumentation Interview Questions
Questions Answers Views Company eMail

So I'm a first year apprentice and I'm having a tough time with knowing the difference between AI, AO, DI, DO. I'm having a hard time understanding what devices are which and why. Can someone explain this to me?

2 608

How to calibrate the flow transmitter

348

i have used level transmitter in starch cooking preparation tank. tank total height 2mtr.sometime LT display shows some error value when tank is fully empty and diaphragm side i already checked okay no problem in diaphragm area. field cable checked 24volt and mA shows correct value while tank empty mA is 4mA. 4mA i needed that 0% but display showing 10% or 15% percentage values are varying continously please give any good solution for me.....

269




We Have Two Field bus Pressure Transmitters of Different Sensor Range (I.E One is of Lower range and Another is of Higher Range).Is same Process Line. My Question is Can i provide Saturation Limit to my field Bus Transmitter as We can provide Saturation current limit to HART Instruments. As During Low Pressure Both Working OK ,But During High Pressure, transmitter with Lower sensor range Goes to Fault mode as Beyond its Sensor Limit it can Measure, So may I provide Saturation point Some where to Suppress This Fault during High Pressure.

OPaL,

374

What is 3 selection available when configure the burnout protection for controller

EI Electrotechnical Institute,

751

Why trim span ? How?

280

Any body have know try work calculation ???

244

What is cut off relay? And why use in PLC and DCS?

263




Please why do we use 4-20ma in instrumentation engineering

297

If relative y axis vibration sensor is by passed, and relative x axis and absolute sensor is left working. how much monitoring i would have risked?

292

How is work 5/2 sov?

317

open tank and close tank leavel transmiter about range and calibration

314

Can we use mov instead of esdv Explain the reason

KOC,

337

What are the questions asked in fresher instrumentation candidates

Polmon,

279

How we calculate orifice plat size???

277


Post New Instrumentation Questions






Un-Answered Questions { Instrumentation }

How to calibrate the flow transmitter

348


How to regulate the flow of Air in 4" line, with max flow of 330 nm3/hr and Pressure of 0.5 bar? please suggest the type of instrument required.

404


2. What is ultrasonic flowmeter?

3390


Hello to all....I am an Instrumentation Graduate and i am passed out in this year only.. I am unable to find the job in my core instrumentation.. so any boby tell me how to and where to search the job....please...and also tell me i there are any courses offered in the instrumentation stream so i can do it... you can send your suggestions to my mail-id i.e Ganesh20084u@gmail.com ... please..

834


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

1390






can anyone tell me about the basic concepts to consider before to start a PLC panel wiring

818


How many types of sensor

444


how many type conductivity sensor ?

916


which type of filter gives the constant phase characteristics?

922


What is the procedure of calibration of Load cell?

793


give eg of how I/P is used in control loops

841


why direct mounted pressure transmitters is always installed with DBB ( double bleed block) valve in process line or top of the tanks ?

863


May I have a brief note above the voltage barriers? Whats is the purpose? Please mail me if you've operational details, mail id: rajkumar.diice@gmail.com

890


please send the drdo exam paper

1296


In Safe Guarding test what means by "Failed to Danger" ?

931