Answer Posted / senthil
2 out of 3:
for example:
we use three pressure transmitters in the process line
discharge of a pump.consider the range is ( 0 to 10 bar).we
have a condition that when the discharge pressure is low the
pump has to trip(less than 4bar).
-if two transmitters goes below this value there is trip.
we have deviation alarm,deviation deadband warning also in 2
voting 3 concept.
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sir, i preparing hpcl,ongc,barc,hal exams(instrumentation engg)pls send a placement papers
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