what are the basic instructions used in simatic s7-300 plc?

5 Answers   Dr Reddys, HZL, Siemens,

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Regarding , there is an air cooler which control the fans(50% of AV FANS) by temperature in outlet , and the louver of Air cooler is controlled by HIC from control system , So if on Air cooler we will consider 2 individual I/P converter or positioner?

0 Answers   Chagalesh Consulting Engineers,

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what is the main supply source for pressure transmitter?

1 Answers  

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Emergency Shutdown Systems/ Plant Shutdown System.

0 Answers   CCIE,

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Hi, I'd like to know the purpose of MOS (maintenance override switch). At site, these switches are installed in a stanchion with the transmitter (connected to ESD). thank you.

3 Answers   Adani, Adani Wilmar,

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NAME ANY TWO ELASTIC PRESURE SENSOR?

2 Answers   DVC,

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what is the Difference Between Domain and Station?

3 Answers   Emerson,

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What is instrumentation control?

0 Answers  

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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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Why boiler chimney area  oxyden sensor fixing? 

0 Answers   NTPC,

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what is the use of impulse line in AFBC boiler , WHY WE CONNECT IMPULSE LINE TO TRANSMITTER , DRFT GAUGE ETC ????????

6 Answers   Jindal, Reliance,

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is fan is a transducer or inverse transducer?

5 Answers  

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