what is different betwen Process zero and atm zero?

1 Answers  

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Hi buddies! my name is sachin and i am working as a electrical and instrumentation engineer in a paper plant. right now i am facing a problem and if someone could help me it will be an immense pleasure to me. i am using AC 800M to synchronise DCS500 drives on paper machine and rewinder.communication is on PROFIBUS and we are using NPBA-01 module to link profibus to DC drives.But these days two of these drives are showing a error named FIELDBUS COMM.TIMED OUT and the drives get tripped.I have changed the NPBA module and PROFIBUS cable.So if anyone can do please help me out with this problem.I'll be highly grateful.

0 Answers  

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How can I zero check of wet leg type DP Tx ?

6 Answers   ONGC,

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what is pressure control

1 Answers   GNFC, IBM, Privi Organics,

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p=hdg,please explain these parameters?

7 Answers  

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why we are using ungrounded RTD sensor and what is difference between grounded RTD and Ungrounded?

1 Answers  

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pls any1 sugges me book for plc,dcs & scada..

1 Answers  

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what are the definitions of input, output, command & signal according to instruments controlled by PLC using DCS System?

0 Answers  

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without color coding, without nameplate, without multimeter how can you find the type of thermocouple???

1 Answers   Sabic,

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Why do we go for 4-20mA? why not other standara?

6 Answers  

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What pressure results for a flow transmitter of range 0- 180t/h in the dcs and 0-301mbar in the field using square root extraction. Kindly also suggest formulae for the percentages 0,25,50,75,100?

0 Answers   Kentz,

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What is the start up procedure of desalter

0 Answers   Reliance,

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