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Instrumentation Interview Questions
Questions Answers Views Company eMail

State 5 different method of level measurements.

SRACO,

3 5254

what is the essential difference between DIODE and SCR in term of application.

ADMA OPCO,

2 4383

In turbine, what does term CDP, NI, NH, HSSOC, means

ADMA OPCO,

2053

An equipment is certified for EEX, IA, IIC, T6, what do you under stand by this.

ADMA OPCO,

3 5933

I HAVE PRESSURE TRANSMITTER WITH TWO WIRES 24 VOLTS SUPPLY.IF TRANSMITTER WILL GIVE SIGNAL TO THE DCS WHAT HAPPEN TO THE 24 VOLTS POWER SUPPLY IT WILL DROP OR REMAIN TO 24 VOLTS POWER SUPPLY.

 3 6031

what is sequence table in DCS . make a logic in sequence table for tripping of ID fan in Boiler(in YOKOGAWA CS 3000 DCS).

Yokogawa,

1 6169

Dear all... I have 1 0-400 duplex type RTD, I connected the A side to the temperature indicator and B side to the PLC panel, but when I have observed then found that The PLC side temp has the variation. and it was distub to other RTD temp also. so what can I do.

 1 3380

Dear all... I have 1 0-400 duplex type RTD, I connected the A side to the temperature indicator and B side to the PLC panel, but when I have observed then found that The PLC side temp has the variation. and it was distub to other RTD temp also. so what can I do.pls help me

Worley Parsons,

1 3923

Can we used Condensate Pot on flow transmitter which is using on liquid having sluge and DP transmitter is in pit and below the process line,Can we used Condensate pot for accamulate the Sluge?

 1 4637

What properties or parameters to be taken into consideration for protection while selection of Dcs controller.

JPL,

1 3261

What is the difference between ROM & RAM .

Sabic, SPIC,

1 4247

Can we use a 10000 Lph Flow Transmitter in 100 LPH flow line to get 20mA O/P by adjusting SPAN ?

1 3732

in differential pressure transmitter,min&max pressure range for hp&lp

 1355

What is the difference between EPROM & EEPROM.

Sabic,

1 8002

What is scale factor of proximitor & unit of the viabration.

Sabic,

2 4507

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Un-Answered Questions { Instrumentation }

what will the sending unit in the fuel gauge utilizes?

1323

Emergency Shutdown Systems/ Plant Shutdown System.

1532

How to Calibrate Flammable gas detector in field

479

How oil line flow measured?eplain about instruments used and working principle?

1404

how to design orifice plate?what is the equation?

1477




explain key exchanges in all security modes WPA,WPA2,TLS?

1342

What is difference between ESD and PLC please Explain me clearly.

4155

What is first echo & echo window in radar type level transmitter?

1130

Draw symbols of the following :

1385

Make a ladder diagram on LSL valve will close, on PSL valve will open and start the motor

1511

How will you calibrate PID controller? explain with example.

1790

For crude application in floating roof tank, how to calibrate a DP Transmitter? How is the floating roof weight considered?

4794

Why we are using reverse action in displacer types level transmitters on some Vessels?

1892

In VVVF DRIVES VOLTAGE IS ALSO VARY WITH THE FREQUENCY. HOW? WHAT IS THE DIRECT FORMULA RELATING THESE TWO.

1725

what is interface level and how it is calibrate?

1622

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