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
10417 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 to know power plant process with corresbonding laws&thoeries

1 Answers Bhel,

why we are using orfice plate? then difference between orfice 7 nozzle plate?

1 Answers Flour Tech Engineers (P) Ltd,

what is cems analyzer explain with principle and drawing ?

0 Answers

what is isolation Transformer???...

3 Answers Emerson,

rtd principle?thermocouple principle?

5 Answers

What is the difference between radar and ultrasonic level transmitter? Which method is best and more accurate?

8 Answers

i have an interview in Qatar Petroleum. So please provide the all details abt fire & gas systems

1 Answers Qatar Petroleums,

when we are using HART COMMUNICATOR why we are using 250 ohm resistance while using HART COMMUNICATOR.

7 Answers

why use squareroot in flow measurment by dp transmitter?

4 Answers

How a conductivity sensor & analyzer work at boiler, whats the principle & science is beyond this,How conductivity sensor sence & convert signal & move toward analyzer & analyzer show reading in percent? also what is temperature compensate option in conductivity analyzer

0 Answers

Transducer Input 0 to 230 v ac Output-0 to 10vdc Receiver Input 0 to 10 vdc and Output 4 to 20 ma How?

1 Answers

what is span value and zero ? and how set ?

0 Answers

For more Instrumentation Interview Questions Click Here