Answer / omak

In DCS system , their is an option called third party interface.this third party interface is mostly in serial communication method. so by using the third party interface card, we can connect the PLC using serial communication method.

Answer / abdul rahim

we can connect the third party in dcs by using the Profibus
serial communication.

what is the deference bitween DCS and PLC SCADA HMI System for Power Process Industry.

1 Answers   UltraTech,

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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..?

2 Answers   Gujarat Fluorochemicals Limited (GFL), Shell,

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What you mean by multi stage control vavles?

0 Answers  

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how to change measuring units from mmwc to cubm/h in rosemount air flow transmitter with hart communicator fluke 744

0 Answers  

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I want to measure and control level in tank of size 10*5 filled with gasoline, so plz give me the solution with clear details. how to select transmitter and sensors.

0 Answers  

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Generally in which location ( JB or IO card or DCS) the thermocouple compensation is done.Also where they measure the atmosphere temp ( for compensation) in JB OR DCS panel? How they compensating that atmosphere temp? is any circuit for that ( like in rtd wheatstone bridge)?

3 Answers  

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What is surge in compressors? How to detect and control it?

1 Answers   DEWA,

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plz send me placement paper of ongc

0 Answers   ONGC,

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What are the two program execution modes of PLC?

4 Answers  

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what is the deferance between LCN and UCN.

1 Answers  

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How a rtd work, and what volts/current goes to a RTD to measure the resistence?

1 Answers   DVC,

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What is the Difference between E/P Positioner and I/P positioner in a control valve? In which applications the respective positioners are used in?

18 Answers   ADCO,

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