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Instrumentation Interview Questions
Questions Answers Views Company eMail

what is cold loop? difference between hot and cold loop?

Adani Power,

2238

what is the use of impulse line in AFBC boiler , WHY WE CONNECT IMPULSE LINE TO TRANSMITTER , DRFT GAUGE ETC ????????

Jindal, Reliance,

6 15524

What are the most frequent problem faces with Vortex flow meter?

1 3851

Control valve Flow characteristic. How the equal percentege curve form?

5 10814

what is instrument philosophy

United Automation,

2260

what is the difference between sensor and tranducers?

12 18930

how to calibrate any tansmiter by loop or hart calibrator

2 6220

WHAT IS THE DIFFERENCE B/W PLC and DCS

Bhel,

10 15181

What is a PID?

6 9925

Explain how thw analog to digital converter works with the circuit diagram

2671

what is three element loop

7 19735

Why the industry's standard current standards are from 4mA to 20mA,not from 0mA or any other range?

3 7701

We are using Rosemount 5400 series Radar Level Transmitters in all types of Sump Applications having oily water hdrocarbon petrochemical nature. What we are facing the problem frequently is that always getting reading frezzed at some value. If we do power recycling , sometimes it is working . then making same freezing problem. If anybody faced before such type of problem and also having solution , Please give the answer.

Sabic,

2328

why pneumatic control signal output is use 0.2 to 1 kg/cm2

Jindal,

3 9688

Why we use mmwc unit for pressure

3 9015


Post New Instrumentation Questions

Un-Answered Questions { Instrumentation }

How u measure the massflow in orifice flow measurement techniques

1405


How to calibration a control valve?

1166


can u plz send me technical questions asked in SCHNEIDER ELECTRICAL technical paper?

4728


how to change measuring units from mmwc to cubm/h in rosemount air flow transmitter with hart communicator fluke 744

2393


What is the main difference between Cavitation and Flashing?

14338


what effects a surging can produce in the compressor

1913


Specify ideal accuracy of flow element like orifice plate, Ventury, Annubar. Ultrasonic flow meter etc.

1913


principle of automatic votage regulator

2137


what is the minimum power (P=VI)to produce a spark?

1978


There are many type of control cable like pair,core,tried, What are defination each one

2148


Isometric drawings are generated during _________________ phase of a project

2071


Why is it necessary to use compensation leg to measure the liquid level in a closed or pressurized tank?

2462


how many pulses are required by a ac induction servo motor of 4 poles with 50 Hz frequency to rotate by 1 degree?

2114


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.

2059


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

2223