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IOCL Instrumentation Interview Questions
Questions Answers Views Company eMail

HOW MANY METHODS OF TEMPERATURE MEASUREMENT ? HOW MANY MEASURING DEVICES / TRANSDUCERS ?

6 8254

can we replace a pressure transmitter of range 0 to 25 Kg/cm2 by a Pressure transmitter of range 0 to 10 Kg/cm2 ?.. Will it affect 4 to 20 mA output signal which we will feed to the PLC.

9 8461

Explain about 4 wire instrument concept & tell about its wiring fron sensor in Field to PLC panel.Explain with an example?

3 10471

Explain about relays.. Can we give both AC and DC to the same relay... How it is energising.. Explain its working..

7 9426

Where & Why we are using SURGE PROTECTION ?

4 6418





1.can you use SCADA instead of DCS,DCS instead SCADA 2.Difference between DCS and PLC,can their role be reversed i.e. role interchange 3.Difference between RTU and PLC

1611

in which principle pressure tx,level tx ,flow tx,temp tx ,control valve works?

2150

WHAT IS SELF CLEAN ELCTRODE IN MAGNETIC FLOWMETER?? WHAT DO YOU MEAN BY THIS TERM??

2 6845

how to set calibration range in a DP transmitter to measure level for a closed tank and for an open tank,and also please explain me how to set calibration range for a DP flow transmitter in a line ?

1 7568

in current transmitter why we use 4-20ma ???

2 3627

Yokogawa mass flow meter shows negative reading...what r the main causes for this problem?...

3 6242

What is safety barrier and how it is work

2 2816

difference between repeatability and reproductability

1 2375

what is stability

2 2392

difference between span and range

3 11011

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IOCL Instrumentation Interview Questions


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114


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105


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133


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89


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998


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109


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98