Answer / abinecious

3 element control means if 1 valve control 3 parameter like
in power plant 1 valve control steam flow,drum level and
feed water flow.

Answer / rushikesh s gaddpawar

Three Element loop control is close loop system. In this
system mainly use in power plant that means it use 1.main
steam flow 2.feed water flow 3.drum level.

Answer / shyam

Three element loop is a close loop control system where
control 3 variables

Answer / ashfaq alam

Three element we used basicaly for boiler steam
control.steam pressure, boiler feed water flow and boiler
drum level control and through final control element mean
Flow control valve.

Answer / seshu

Single cortrol valve control the three industrial parameters at same time for ex: boiler drum level control valve

Answer / chris

You nee to be specific, is it -
A) A 3 element loop?
B) 3 elements of a loop?

A) Normally used for boiler control.

B) 1. Detection (Element)
2. Control (controller)
3. Correction (valve)

Answer / ainadz

Basic for close loop.

1 - measure (trasmitter)PV
2 - control (controller)
3 - control valve (MV)

I am a instrument technician. recently i attend interview and face one of question for DP transmitter ,the client asking about the calibration of DP transmitter ,am answer the calibration procedure, they will ask one more question. why open LP side in atmosphere? i did not answer that question. so please help me and explain the particular question. Dear firends waiting for your valuable replay

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