Answer / fazil

DCS- distributed control system. widely used in large scale
industry. a system which control instruments for desired
process variables
ABB- is a multinational corporation headquartered in Zurich,
Switzerland, operating in robotics and mainly in the power
and automation technology areas

google it for definition, inquire here for more advance

Answer / ayaz

DCS is distibution control system to monitor and measuring .
and ABB is manufacturer company this is largest one of them.
ABB is company name like yakogawa etc...

please give me combustion cntrl interlock details? if possidle drawing also?for this one is there any website ?

1 Answers  

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If a control valve is hunting means means if we are giving 50% to the cv, the cv will open at 51% then slowly slwoly it will reaches 49% , then it will reaches again 50%, this type of action occured frequntly.. so what to do for solve this problem. The possible cause is in volume booster or positioner's relay.. positioner is double acting .. and make siemens..sipart.The cv is double acting and mounted for anti surge operation, it having 4 nos. volume booster, one sov, one positioner, etc..?

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cascade controller is feed back or feed forward or both

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what is sinking and sourcing....

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whats the reason for control valve not installed -90degree (down position)

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How the sizing of the analog signal cable is calculate?

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i want to measure temp of hot sand(welding flux) in closed chamber(around 150 deg C).Which is better thermocouple or thermometer?

1 Answers  

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if in a level tx height is given, how u calculate the ranges of the tx?

2 Answers   Bombay Rayon Fashions, Invensys,

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