Instrumentation Interview Questions, Answers for Freshers and Experienced asked in various Company Job Interviews

Instrumentation Interview Questions

Questions Answers Views Company eMail

State 5 different method of level measurements.

SRACO,

3 6707

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

ADMA OPCO,

2 5870

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

ADMA OPCO,

2675

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

ADMA OPCO,

3 7547

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 7762

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 7414

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 4392

Worley Parsons,

1 4942

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 5660

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

JPL,

1 4225

What is the difference between ROM & RAM .

Sabic, SPIC,

1 5443

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

1 4600

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

1935

What is the difference between EPROM & EEPROM.

Sabic,

1 9212

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

Sabic,

2 5969

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Un-Answered Questions { Instrumentation }

we want to control pump in let pressure and tank (for exp) our inlet line if water cam and pump will on and when our tank will full pump will off also if our inlet pressure low pump will off even tank not full.this pump i want to uses on our water supply line.

1654

please send the drdo exam paper

2334

can we create an interrupt in plc through scada?

2302

is motorized valve closed when power shutoff?

1647

Isometric drawings are generated during _________________ phase of a project

2016

how to calculate range of level transmitter?

2256

give some question relative instrument fitter?

6201

What are different types of orifice plates?

1106

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

2075

send me HPCL paper

10011

what is the diffrence between pressure safety valve & pressure relief valve....pls

2131

How vortex sensor used for steam flow measurment can be checked on line i.e without taking out from process line.

2085

how to convert MA in to measuring values..and how mwasuring values into MA ?..plz ansr.i have intervw

2605

What is the use of control cable?

1091

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

2392

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