Difference b/w SCADA & DCS

8 Answers   Siemens,

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In control valve there are two type of valve seat we can use metal to metal seat & soft seat.On this valve seat i have following doubt. 1)I have never seen practically the internal assembly of valve so my doubt is that basically weather the seat is soft seat or metal its basic MOC is same as valve body(SS or CS) only in soft seat we are using PTFE ring & place on valve seat & in metal this PTFE ring is not threr am i correct??????? 2)what are the common general rule for using metal to metal seat & soft seat,means its depend on process parameter like liquid,gas, steam & on valve leakage class.

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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How does a strain gauge measure pressure?

2 Answers  

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How Honeywell FSC is functioning and what is its purpose? Can we bypasa it and only use DCS instead of that.

3 Answers  

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how to calibrate corollaries (Mass flow meter)?

0 Answers   Honeywell,

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can anybody will tell me abiut PID controller.

4 Answers  

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How can I zero check of wet leg type DP Tx ?

6 Answers   ONGC,

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Foe selecting control valve if i have the min,normal & max data of flow rate,inlet pressure& outlet pressure,inlet tem.&density than how can i assure that these data are correct,pl. let me know if therew there is any method to check it.& also how we assure that the Cv we get from this data is suitable for valve for controlling require flow.

3 Answers   HPCL,

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field bus transmitter calibration procedure tell me

0 Answers   BAP,

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how u calibrate sox nox co2 co in cemps?what is opacity n HPm?tell the standard parameters of cems?

0 Answers  

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what is instrumentation?

8 Answers  

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