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.

What is SCADA ? WHAT is it role in DCS ?

3 Answers   Honeywell,

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What is mean by SMART in an Instrumentation. is any full form for SMART?

3 Answers  

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1 How to calculate dp transmitter steam and water? 2 impulse line for liquid steam and gas

1 Answers   Sitara Chemical Industries,

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Is that Speed Probe and Vibration Probe sensors are same,if yes what is the diff b/w them?

2 Answers  

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what is the meaing of calibration curve?

3 Answers   HCL, Honeywell,

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In dcs contol valve parameters showing like this Gain=1 or 2 , ti=7 sec, td=20sec. But temp,pressure,level control valves we are using in which type parameter side using ti,td clearly tell me

1 Answers  

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how i can copy paste the program of smart transmitter to another smart one with hart communicator?

2 Answers   KOC,

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p=hdg,please explain these parameters?

7 Answers  

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What is the difference between bench set and operating range i control valve?

1 Answers   Descon,

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how can loop single 4-20 ma to two isolation amplifier? i mean i have two isolation amplifier with 4-20 ma input and 1-5 v output.can i done series connection ?

1 Answers  

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What is Droop? What is Step/Gradient Limiter in Turbine Governor control?

0 Answers  

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SIR MAY I KNOW IF RADAR TYPE LEVEL TRANSMITTER SHOWING IN THE FIELD 0 % LEVEL AND IN DCS SHOWING 100% THEN WHAT IS THE CAUSE I CLEAN THE CHAMBER & TAKEN ONLINE BUT ONLY ONCE ITS BECOME ZERO IN DCS BUT AGAIN 100% SHOWING IN DCS,THEN I REMOVE THE POWER SUPLLY AND CONNECT IT AGAIN .IS IT OK BUT STILL IN THE DCS ITS 100% AND ON THE DISPLAY ITS INITILAZIATION PLEASE HELP ME READRING THIS?

4 Answers  

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