Answer / kunal

first of all open the two nos screw than check interlock if
bypassed, than PULL the card.

so simple.

Answer / muzaffar

If the Card is redundant then there will be no problem to change the failure card. if it's non-redundant cards then please follow the Kunal instructions.

Answer / faiyaz ahmad

DCS card can change very easily because the DCS system would be redundant means each Nodes having a Stand by That is why if you want change DCS card you can when you will change the card another will come online by its self all are in automation system.

what is meant by Valve reversibility?

2 Answers  

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what is absolute pressure and where use in process?

3 Answers  

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what is the difference between signal cable and ontrol cable?

14 Answers   Essar,

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We have yokogawa cs3000 one fcs and 4 his. After download to his, showing successfully at es, but not transferred to his.

1 Answers   Shyam Steel,

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Q1: Consider part of a control loop, which excludes the transmitter, consisting of a process, a controller and a control valve which may be represented by two dead times of 0.5 min each and three exponential lags of 0.8 min., 1.0 min. and 1.5 min. respectively. We wish to express this system as an overall first order plus dead time (FOPLD) model ie gain, time constant and process dead time. (We will see later that this is often done, to simplify controller tuning). For this exercise, gain is considered to be 1.0. (A) If the transmitter is a flow transmitter whose behaviour can be described by a dead time of 0.2 min. and an exponential lag of 0.5 min. in terms of the overall dead time and overall first order lag how can the system behaviour be approximated ? Overall dead time = Overall time constant = (B) If the transmitter is a temperature transmitter with a temperature sensor in a protecting well whose behaviour can be described by a dead time of 0.7 min. and an exponential lag of 15 min. how can the overall system behaviour be approximated now? Overall dead time = Overall time constant =

0 Answers  

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what is use single seated and double seated valve?

2 Answers   Doha Petroleum Construction DOPET,

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Why 250 or 500 ohm load resistance is use in any transmitter

2 Answers  

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Calibration procedure for electro magnetic flow meter

0 Answers  

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Turbidity analyzer working principle ?

0 Answers   Tata Steel Limited,

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Gas equation

0 Answers   CCIE,

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Furnace draft transmitter range is -50 to +50 mmwc. why the impulse line connected in hp side?

2 Answers   Arena,

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any one can send me instrumentation previous interview papers? I prepare for MNC Company Interviews? my mail id- Rakesh.Golla@dodsaldxb.ae , and another mail rakesh.gvk@gmail.com

0 Answers  

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