what is zenier barier and what means
zone 1,zone 2,and zone 3
Answer Posted / jayeshsangani1988@gmail.c
zenner barrier is safety barrier for hazards area for current limiter,voltage limiter.
and zone for hazard area classification for duration based.
zone 1- explosive mixture of gas,vapor,is present in continuous
zone 2- explosive mixture of gas,vapor,is like to occur in normal operation
zone 3- explosive mixture of gas,vapor,isn't like to occur,and if occur is vary short time.probability is vary less in year
| Is This Answer Correct ? | 4 Yes | 1 No |
Post New Answer View All Answers
what effects a surging can produce in the compressor
Good evening all I need a small favour regarding reliance paper i wanna probable sample papers(e&i) of reliance. if any of u have any idea about dis then plz mail me back.i belongs to electronics and instrumentation engg.so i need e&i papers. thanking u....
I have got a call of IOCL interview for projects having 2yrs experience. What sort of questions should I expect in the interview?
what is output of FOUNDATION FIELD BUS transmitter
What is intrinsic safety mean.
How can a d.p. Transmitter be calibrated?
What is surge and how is it prevented, what is the purpose of bypass valve across AS valve.
need to calculate flow rate with the help of dp range and orifice bore dia and size. range is 0 to 400 inwc and orifice size is 12 inch 150 # rf and bore dia is 7.180 inch. need to calculation for flow rate
Which are all the commonly used Bordon tubes in the pressure gauges. Do any one use ASTM A 312 tubes for this purpose?
can we copy the software from a transmitter using hht(hart 275) ?
What is difference of fanuc alpha series 16i and 18i controller.also what is differnce betn TC and MC controller
where proximity sensor installed on tank in loading arm application
What are different types of orifice plates?
How to calibration a control valve?
When doing a liquid seal on a differential flow transmitter , most of the time the sealing liquid will be heavier then the process fluid. For wich application will the sealing liquid be lighter than the process fluid if transmitter is mounted below the process line.