Where are oxygen analysers installed in cfbc boilers? What are their usual readings?

0 Answers  

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Why we are using 4-20 mA as Analog signal transmission other than 3 to 19 or 2 to 18 or 6 to 22 like wise ? What is the reason behind using 4 & 20 mA? Can anyone give proper technical reply ?

5 Answers   Air Liquide,

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what is the difference b/w normal thermocouple and skin type thermocouple?

1 Answers   Heisco,

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How to connect PLC to DCS ?

2 Answers   Alkyl Amines,

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how to make a calliberation for deffirential pressure

3 Answers  

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what is full form of NAK?

1 Answers  

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What is the function of positioner in control valves? does the control valve operate without positioner?

3 Answers   Hofincons,

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Relation in MMWC to Flow rate

1 Answers  

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installation process of orifice,a question asked for confusion creation in interview by BARC 1.if orifice is tightly fitted with pipe ,it will act like venturi 2.if orifice is left hanging in between liquid it will not create the pressure difference exactly,

0 Answers   BARC,

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working principle of lvdt?

2 Answers  

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please send me hpcl placement papers

13 Answers   HPCL, L&T,

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How to isolate a DPT from line in the condition that process must not be disturbed,and process is also critical and no bypass is available.?

4 Answers   Descon,

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