Can anybody explain what is the different between ESD & PLC

1 Answers   ADCO,

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what are the pinciples & units of flow, level, temperature, pressure, quality.

1 Answers  

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what is the difference between active & reactive power?

0 Answers  

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in my plant 100% feedwater control v/v is air to close but due to instrument air fail,the valve opens but instead of drum level high its get tripped in low low drum level.the urv of level tx is 0 and lrv is -800.pls tell me the reason. for such behaviour.

1 Answers   Sirpur Paper Mill,

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as an instrumentation engineer which are the things we have to know / or we must have idea about that....

2 Answers  

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I work on a electronic positioner transmitter 4211 at the field.I connect my multimeter in series to get the current output then I calibrate it to 4ma in 0% of position of the valve and 20ma in 100% position of the valve.My problem is in the field I get the correct output current based on my multimeter but in the dcs they only receive 40% in a output 20ma of this positioner.Then I try to simulate in this analog card and they receive the equivalent percent on the value that I simulated.Is ther any possibility to reset the zero and span of this positioner 4211 fisher.And what other possibility I can do to fixed this.This is my email add ( landicho_randy@yahoo.com )

4 Answers  

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pls suggest suitable MOC of diaphragm for pressure measurement of UREA grade solution service fluid.

0 Answers   Siemens,

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what sud u do if u dont get feedback from control valve?

1 Answers   Siemens,

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could someone explain for me what is 32-bit Floating Point ? Thanks

1 Answers  

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what is the conductivity sensor output formula and what is the ph sensor output formula?

1 Answers  

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What is Cavitation in a control valve?

0 Answers   CCIE, KN,

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wt kind of business we can do by usig PLC?

2 Answers   Dabur,

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