Answer / vishal

In case of drum, it contains both water and steam and the
zero is located the midway to maintain optimum level in
drum say -30mm is maintained for safe boiler operation and
high levels are controlled to avoid water rushing to super
heaters and damaging turbine and simmilarily very low drum
levels are avoide to protect overheating of drum and
prevent excessive rise in drum metal temperatures. but in
case of deaerator we are only concerned with the actual
level present in it to indicate in control room.level
ranges are generally in accordance with the height and we
take 0 for min level and for eg 1000mm if the height is
1200 mm or equivalent for safe operations .

Answer / tarique

to maintain your sp as per load control,for anti cavitation
in your system it will always monitor true value

the pump holds on run indication into the dcs and filed local control panel remote push button condition operaton wrong like when the push button pushing conditions the pump is off and the push button release condition the pump is on totally opposite condition . And control room inside give the stop command into dcs just 1secon relay engage and again normal condition. How can I slove

0 Answers  

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What is controller? What is transmitter?

1 Answers  

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my temperature transmitter in field showing 700 degree , whereas in dcs showing 459 degree, how to resolve this?

4 Answers   ONGC,

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if drum level is low what is interlock? i mean we put interlock to fd fan or id fan ?

4 Answers  

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what is the difference between attemperator and desuperheater ?

0 Answers  

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we have level transmitter for h2s04 storage tank capacity 10k ,always there are failure of transmitter due to failure of magnetic floats ,please come up with solutions at the earliest.

0 Answers   TechNova,

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In a gas over oil actuator, after the opening/closing of valve, how the gas is vented out? How does the hydraulic/gas circuit function?

0 Answers   Reliance,

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Actual using of tube bender to bend 2 opposite 90 deg at correct measurement center to center of tubing.

0 Answers   CCIE,

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in DCS or PLC we can not put all ai or di,there is calculation through which we can accomodate certain no of digital and analog signal.I need to know that calculation

1 Answers  

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why is the sleeve of the cable used for?

2 Answers   Jindal,

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what is difference between accelerometer vibration sensor and proximity vibration sensor

3 Answers  

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what is meant by Hydroelectric powerplant?

0 Answers  

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