role of electrical engineer in the instrumentation industry

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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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What is the GK Value in Flowmeter?

0 Answers   IBPIL, Thermax,

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TRANSDUSER MOSTLY CONVERT WHICH ENERGY INTO ENERGY ?

6 Answers   DVC,

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you must show the examples application and give at least 4 types of transducer/sensors that can minimize the failure during the manufacturing of the resistors.

0 Answers   DEWA,

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whats diffeence between dcs & scada operation.

3 Answers   Orchid, Reliance,

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Dear sir I am MD.zafar eqbal. I have taken this id from allinterwiev .com I have qustion if you dont mind. 1.what is the maximum operating temprature in instrumentation. 2. I want know about viberation i mean wahat types of sensor used in viberation And what types of trabsmitter used.and hiw to control it and wher is used of viberation transmitter and finally how to control it and what types of fault come. Sorry for disturbing you. I know you have no reason for help me. Because you dont know about me.but i request you please help me these question are very usefull for my feauture.plz sir Thanking you. Sent from Yahoo! Mail on Android

4 Answers  

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how to calculate orifice sizing? and tell me if pipe size bet 50mm t0 200mm then we can use pipe flange??? and above 250mm pipe size should i use D & D/2 Flange? is it right or wrong?

0 Answers  

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.how does CSADA systems display the process variable value?

2 Answers   Empower,

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what is the protection system in solar turbine compressor

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What is an SCR?

4 Answers   GAIL,

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What is open loop and close loop?

4 Answers   L&T, Pearl Distillery,

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