for oil & gas industries which zone is normally preferred? why? give its example?

0 Answers  

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How to get Cv of control valve having following parameter ,i.e inlet pressure 4.5kg/cm2 outlet pressure 1 kg/cm2 specific gravity 0.808

3 Answers  

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Pls.could any one Clarify the following with an example. 1.At What condition Close on Rise and Close on Fall Pressure Switch contacts are used. 2.If Pressure is abnormal as per set pressure,if connecting Terminal of pressure switch breaks,how the voltage extends to Relay base. 3.Are these contacts come under fail safe philasaphy.

1 Answers  

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What are the type of bonnets in the control valves?

0 Answers   CCIE,

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What is Square Root Extractor for?

9 Answers   Sabic,

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in rotark mov in display err msg showing how to remove the error

1 Answers  

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why we use by pas on a positioner? When can a by pass be not used on a positioner ?

1 Answers  

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what is pt100 RTD, and does 100 stands for

8 Answers   Tata Power,

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what is absolute pressure, gauge pressure and atmospheric pressure?

2 Answers   Mother Dairy,

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Difine flashing , Cavitaion & Noise? how to minimize these effects

3 Answers   L&T,

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What is the differerence between hysterisis and linearity.

0 Answers   CCIE,

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SIR MAY I KNOW IF RADAR TYPE LEVEL TRANSMITTER SHOWING IN THE FIELD 0 % LEVEL AND IN DCS SHOWING 100% THEN WHAT IS THE CAUSE I CLEAN THE CHAMBER & TAKEN ONLINE BUT ONLY ONCE ITS BECOME ZERO IN DCS BUT AGAIN 100% SHOWING IN DCS,THEN I REMOVE THE POWER SUPLLY AND CONNECT IT AGAIN .IS IT OK BUT STILL IN THE DCS ITS 100% AND ON THE DISPLAY ITS INITILAZIATION PLEASE HELP ME READRING THIS?

4 Answers  

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