Answer / anurag,e&a ispat ind. ltd.

in manual control system all the controlling parameter have
been controlled by operatorbut automatic control system all
parameter are controlled by automatic control system by
using plc,dcs @scada system.

Answer / harsh zala

In manual control system, operater has to calculate the
manipulated variable(MV) manually..like we r controlling a
speed of two wheeler by accelerating it by our hand...

While in auotmatic control system u need to give set point
(SP) and acoordingly we programmed the system it will try
to reach the desired output(sp) automatically.uit does not
need manual calulations.as it is already programmed.

Answer / elibariki

automatic control system is the closed loop system that requires no operator e.g Automatic furnace temperature system
Manual system is the system that requires an operator

Answer / dibyalochan sahoo

In automatic control system sensor is used to reduce the error.in manual control system user is responsible to reduce by observeving output.it is a close loop control system .in place of sensor here human is present.an open loop control system with human involvement called manual control system.

Answer / uday

Human operated system is called manual control system.like speed control of vehicles.it's operation based on human sense.
Automatic control system have sensor mechanism, sense the actual condition and send feedback to controller.

which flow meter is use for measuring the open channel flow?

2 Answers  

in the pipe line if the control valve fails to respond to controller action,by what means we can stop the flow in the pipe line ?

9 Answers  

what is positive displacement meter.

1 Answers   Takreer,

What are the materials use for COntrol Valve body?

1 Answers   KNPC, Qatar Petroleums,

what is flow

2 Answers  

what is meant by calibration

20 Answers   Exxon Mobil,

what are the documentation and instrument identification system used to identify the correct device to be calibrated? name atleast three.

1 Answers  

how u measure flow?orifice measurement?why all ft in square root?

1 Answers  

need instrumentation job completed 1 year trainee ship in mnc pesticide company. now in search of job

0 Answers  

what does a positioner in control valve ?

11 Answers  

what is the Instrumentation?

9 Answers   Gulf,

What is profibus?

0 Answers