Answer / sreedhar

First Measure The Height Of The Drum From HP To LP. For Example If It Is 500 mm. Then The LRV is -500 mmh20. URV Is 0 mmh20. Because It Is Steam It Will Condensate So We Have To Use Wet Leg. If There Is No Level In Drum, We Will Fill The LP Impulse Line With Water So 500 mm pressure Will Act In LP Side So It Shows 0% Level. When The Level Starts To Raise In The Drum The HP Pressure Will Increase And It Will Show The Corresponding Level.

how is work pressure switch& level switch?what is the principle of this?

0 Answers   Binani,

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What is the definition of direct acting valve & reverse acting valve

2 Answers  

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I am teja. I am studying Msc(tech) Electronics and Instrumentation (3years course) in Andhra university. But my course is not recognised by UGC and AICTE. Please tell me the job opportunities after this course. And i fineshed PLC course in IGIAT ,Vizag.Also complted my short term coure in SCADA, Seimans WinCC in ATI,Hyd.After Msc can i join Mtech for good job? or phd. How i can get good job in INdustrial Automation Side. Please give replay.Because this is my life matter.

0 Answers  

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What is the diffrence between ff tx and non ff tx

0 Answers   Jindal, Rosemount,

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Explain about safety integrated level protection? . How it was differ from other protections ?

0 Answers  

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A DP transmitter is used to measure the level of an open tank. The drain line of the tank is connected to a control valve, and is configured as, if the level of the tank is 90% the valve should get open 10%. And if the tank level is 10%, the valve should get open 90%. Draw wiring diagram and explain how to configure DP transmitter and control valve using HART communicator. If the span error at output is 1%, what will be the %opening of the control valve at 60% level of the tank?

0 Answers  

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What is the cascade control system and where is use in power plant give the detail with block diagram

1 Answers  

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How to connect PLC to DCS ?

2 Answers   Alkyl Amines,

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hi friends,im an instrumentation and contol engg student,can u hlp me of suggsting barc written question paper,my id is roysuvaranjan@gmail.com, cel no.9563591747

0 Answers   BARC,

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What is Cavitation in a control valve?

0 Answers   CCIE, KN,

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wht is snap action switch?where it is used?is there any diff between snap action switch and normal pressure switch?

1 Answers   ONGC,

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what is the meaning if the control valve CV is 27,in terms of selecting procedure?

2 Answers  

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