What is the difference between working pressure and calibration pressure of a control valve

0 Answers  

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what is cavitation in control valve? & how we can avoid it?

1 Answers   Forbes Marshall, Reliance,

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If we interchange HP and LP tapping in drum level measurement and reverse LRV & URV correspondingly.What is the difference between the normal tapping(HP,LP) and reversed tapping(LP,HP)?

2 Answers  

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which transister (npn or pnp) is used in vibration monitoring for negative voltage? 

2 Answers  

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what are different types of cables used in instrumention how to calibrate a level transmitter online ( rosemount )

1 Answers  

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in yokogawa prosef rd safety PLC how to data send frome local SCS to other SCS and other FCS

2 Answers  

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what is the use of glycol filling in seal pot (or) condensate pot in instrument impluse line?

7 Answers  

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how will do square root transmitter calibration

2 Answers   Roche,

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Troubleshoot to the device level basic process control systems given the Process and Instrumentation Diagram?

2 Answers   Chettinad, HPCL,

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Condensation within a sight glass? Would you expect there to be more problems when using a sight glass if there is condensation on the inside or the outside of the glass, and why?

1 Answers  

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what is concept of field,control room area in transmitters?

1 Answers  

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if the neutral and ground of ups voltege are connected together in the source itslef then why the voltege b/w neutral and ground comes positive in some other destination inspite of having earth pit. how can we mimmise this?

1 Answers   MPL,

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