In oil & gas industries and petrochemical industries, there are classifica

In oil & gas industries and petrochemical industries, there
are classification of zones like zone 0, zone 1, zone 2. Is
there any differences in voltages or power supply supplied
for the process instruments, control instruments depending
on the zones

Question Posted / mohi

1 Answers
10412 Views
I also Faced
E-Mail Answers

In oil & gas industries and petrochemical industries, there are classification of zones like z..

Answer / wael mohamed

yes,according to the frequencies of gas in different areas

Is This Answer Correct ?

2 Yes

3 No

Post New Answer

More Instrumentation Interview Questions

how many types 0f thermocouples?

6 Answers HZL,

How to Calibrate Ultrasonic Level Transmitter in field

0 Answers

What does it mean 3/2 sov

5 Answers

what is meant by calibration

3 Answers

please explain about actuator action? direct action & return action ?

1 Answers

what is air to open and air to close control valve and difference btwn this...and how to measure milli amp by this...and what is the role of positioner and i/p converter in this..plz help me

2 Answers HCL, SOC,

how to calculate the total flow in square root

0 Answers PTI, Qatar Kentz,

How to check electrical health of Vibration probe?

1 Answers QAFCO,

As you are fresher in Instrumentation & control engineer.Then why should I select you?

1 Answers

FOR CO/CO2/O2/NOX applications which of the following manufature is best? and what is the basic principle of gas analysers? ABB/YOKOGAWA/EMERSON/SIEMENS/TELEDYNE/THERMOFISHER

4 Answers

Why do we have earthing cable in branch cable and shield in the same cable?

0 Answers Process Control Technologies,

What is exact difference between the panel earthing and system earthing in DCS system. What is the value of resistence.

0 Answers

For more Instrumentation Interview Questions Click Here