why we use 250 ohms across HART CALIBRATOR DURING CALIBRATION OF TRANSMITTER

4 Answers  

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why we are using negative range like -750 to 0 mmwc in closed tank?and what is the reason can you explain clear?

2 Answers   Aarvi Encon,

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what is radar type level transmitters and its basic principle and how to calibrate it

4 Answers   ABB, Inovonz,

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what is cascade loop and how it work and why it used instead of PID single loop? In cascade, Which loop is faster and slower? Please explain with loop drawing and example...

2 Answers   Honeywell,

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Why Bently Nevada use negative voltage for vibration probes?

4 Answers  

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Foe selecting control valve if i have the min,normal & max data of flow rate,inlet pressure& outlet pressure,inlet tem.&density than how can i assure that these data are correct,pl. let me know if therew there is any method to check it.& also how we assure that the Cv we get from this data is suitable for valve for controlling require flow.

3 Answers   HPCL,

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Why grounding is necessary? Give example with diagram.

0 Answers   Bright Point, DS Group,

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we have a s-5 simense plc having op7 .recently on op7 showing error 1.plc not present 2. DB error frequently. can u have any solution . please send me.

0 Answers  

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Can combine control system for Emergency control system (ESD)and Fire & Gas System ( F & G) is possble to built and offer to client? Can such system is as per Norms in India?

0 Answers  

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is motorized valve closed when power shutoff?

0 Answers   Unilever,

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What is PLC(programmable logic control)?

1 Answers  

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why we use npn sensor in vibration monitoring system

1 Answers  

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