Answer / greenborhan

All DCS has 2 types of inputs AI (Analogue Input), DI (Digital Input) and 2 types of outputs AO (Analogue Output), DO (Digital Output).

All the inputs and outputs may a contact signal or mA or mV

greenborhan@gmail.com

Answer / faiyaz ahmad

DCS has three input network communication field control station engineer work station
PLC has many input proximity switch push button limit switch
PLC output is motor heater solenoid valve led

What is the use of +/- 20ma in analog measurement,and which instrument gives +/-20ma output

1 Answers  

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Hi buddies! i am facing a problem and if someone could help me it will be an immense pleasure to me. we have compect logix PLC 1769 2L AO module to Heat @ 52 to 56 Deg C .So if anyone can do please help me out with this problem.I'll be highly grateful.

1 Answers   Cadila,

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What is differnece between leveltroll and interface leveltrol?

2 Answers  

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How to check range of DP Transmitter

7 Answers  

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How to control flow variations in magnetic flow maters..... When i will provide proper earthing?

0 Answers   ABB, L&T,

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why we use the 4-20 mamp signal used for transmitter.

5 Answers   Tecnimont,

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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% , so what to do for solve this problem. The cv is double acting and mounted for anti surge operation, it having 4 nos. volume booster, one sov, one positioner, etc..?

0 Answers   QAFCO,

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Questions on flow meters,few questions on HART protocol,

0 Answers   Monnet,

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What are the types of control valves available

0 Answers   CCIE,

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Hi Friends i am going to write BARC written test by this month 20th (20-5-2008). So please if any body knows the details about this or having previous question papers pls mail me to kkumarei@gmail.com. For Suggestions give one message to 9962122264

0 Answers   PDIL,

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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  

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there are two candidates p and q in an election.During the campaign,40% of the voters promised to vote for P ,and rest for Q.however, on the day of election 15% of the voter went back on their promise to vote for P and instead voted for Q. 25% of the voters went back on their promise to vote for Q and instead voted for P.suppose,P lost by two votes,then what was the total no. of voters.

4 Answers   GATE,

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