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Instrumentation Interview Questions
Questions Answers Views Company eMail

Explain " FAIL SAFE " feature in temp. measurement.

Bapco Bahrain Petroleum Company,

1 5400

What is meant by cold float of compressor shaft.

Sabic,

1 5232

What is offset in a control system.

Sabic,

2 9121

What is the relationship between GAIN and PROPORTIONAL BAND.

Kharafi National, Sabic,

1 8171

What is the purpose of valve positioner. Explain 4 uses.

SRACO,

2 7601

What is cavitation. what is the effect of it on control valve and how is it prevented.

ADMA OPCO,

1 5429

What is meant by GAP VOLTAGE, in vibration measurement. Normally how much GAP VOLTAGE is set and state the reason.

ADMA OPCO,

3 31243

What is surge and how is it prevented.

ADMA OPCO,

1 3512

What is the purpose of bypass valve across AS valve.

ADMA OPCO,

2155

State four different types of flow measurement.

ADMA OPCO,

4 9206

Give 2 application of quartz crystal used for process parameter measurement.

ADMA OPCO,

1 3059

What will the new flow factor if D/P Transmitter is RE-RANGED from 25" WC to 50" WC

ADMA OPCO,

3 10704

What is the out put of pressure switch & electronic pressure transmitter.

ADMA OPCO, Al-Barrak,

5 9139

can any send me a forbes marshall dtron 316 manual

2009

Dear Friends, we are planning to design Power distribution and Fiber optic in the same cabinet.Like Front side Fiber optic and Rear side Power distribution.Is it any possibility of problem occurs like interference etc? Your answer is highly appreciate.

2260


Post New Instrumentation Questions

Un-Answered Questions { Instrumentation }

What is intrinsically safe system?

1202


what is the calibration procedure for magnetic flow meter @ onsite

1707


If i have 4 Allen Bradely make RS logix 5000 PLC and for viewing that we are using 4 RS view SCADA for 4 different packages. Now, I will want to view two packages on only one SCADA. Then how i will do it?

2436


Is it ok, to use non-contact type Radar type LT, on a tank that is half circular from the bottom side? If yes the, isn't the waves gonna bent in other directions? 

2230


what is output of FOUNDATION FIELD BUS transmitter

2206


why we should maintain neutral earth voltage below 1V while calibration? why cant it be 1.2V or 2V

2498


why we use cascade control and feed forward control in 3 element drum level control measurement of steam drum .what is cascade and feed forward control system ?give example .

2934


NSV type probe stands for

2434


Which type of pressure can be measured by these elements?

1181


what is the input to be given in digital flow meter during the the calibration time?

2296


Why 4-20 amps is being used in instruments? Why cant we use any other range instead of 4-20 amps? Why only 4 amps is taken as lower limit and why 20 amps is taken as the higher limit?

1568


What is three element drum level control system why its better than single element?

2625


WHY THE DEGREE OF VALVE PLUG AND VALVE SEAT IS SLIGTLY DIFFERENT I CONTROL VALVE TRIM DESIGN

2027


Name different types of bourdon tubes.

1201


principle of automatic votage regulator

2190