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Instrumentation Interview Questions
Questions Answers Views Company eMail

how many types of elements are there?

1 3176

why we use -ve voltage in vibration monitoring system.generally we use 4 to 20 mA as output of instrument then why we use voltage in vibration

2 7553

what is bms?

Emco,

4 5517

I have a LT of 10000mmwc range. can i use this LT in 1000mmwc range of tank?? if yes than what happened???

Nirma,

3 5383

what is the deluge ? How can its working?

KOC,

2 5314

what is the difference between plant earth and instrument earth? and what type of cable( cable size ) used for both? and why ?

2387

please explain about actuator action? direct action & return action ?

1 3244

draw a loop drawing of vibration beginning to end

1 3296

what is proportional & what is proportional band

Nimir,

1 1777

I want condensate pots vent position erection of flow transmitter ?

1 2768

WHAT IS D/O D/I AND A/O A/I PLZ EXPLAIN

2 4034

what is instrument termination

1 1979

what is intrument termination what is commisioning

3 6647

what is solenoid valve?

1 4553

Whatis the reset ofset and control system in instrumentation

Asyad International Company, CAE, Sugar Factory,

1151


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Un-Answered Questions { Instrumentation }

How to erection of DCS Panel at site step by step

541


Working principle of magnetic flow meter ......and calibration procedure of e+h magnetic flowmeter...

1453


Can anyone send most commonley asked Instrumentation questions and answers in cement industry please?

1025


IN CONTROL VALVE SPECIFICATIONS GENERALLY TERM " DE- 200" ."DM -400"USED,, WHAT IS DE/ DM STANDS FOR?

1321


describe flow nozzel principle?

1559






Why all the drains(Gland sealing,ESV,Casing inlet etc) are directly connected to the flash tank instead of hotwell of the condensor in the power plant? My Email Id:naba02222@gmail.com

1465


What is the purpose of the analyzer in petrochemical plant?

2862


Can anybody tell me how to select the size of earthing cable for DCS & PLC system.Please tell me any relevant answer here or mail it to me.

1256


why we take %i0.0 as input for twido plc

1210


A flange is used for instrument connection for a system with a design temperature of 316C (600F) and a design pressure of 1000 kPa (145 psi). What is the class rating of the flange to be used for this application? Explain your answer

1206


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

1177


what does the ratio 800-400-300-200/1-1-1-1-1 in the specification of current transformer indicates?

1524


Draw a simple circuit for a well head control panel used to protect the well against fire, leak, blockage, ESD, & controls the operation of one downhole & one surface safety valve. Explain the operation and controls

802


HOW TO CALCULATE ACCURACY OF AN INSTRUMENT. WHICH IS COMPITABLE FOR USE.

1392


1.what is controller proportional gain 2.what is the controller intergral action time. 3.A proportional plus derivative controller that has a proportional band of 20% and a derivative action time of 0.1 minutes. Construct the shape of the output waveform for the triangular input if the input rises and falls at the rate of 4 units per minute.

1754