what is the difference between RS 232,RS 485,RS 422, how they different from each other

15 Answers   TCS,

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How to find the range of DP cell Transmitter for measurement of level in closed vessel.

3 Answers   Rosemount,

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1 Answers  

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what is plc?

27 Answers   HPCL, KRL, Noor Company, Petrochemicals, SS Automation,

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please tell me how maintainence person shifted to good epc company/design company

0 Answers  

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How to calibrate the magnetic flow meter and how to correct the flow if it is showing more flow.

5 Answers   Bohra Industries Limited, TCL,

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selection criteria of control valve? and selection criteria of actuator explain in brief?

0 Answers  

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how do i calibrate mmwc pressure guage with out calibrator.if any? pls give me the ans.

1 Answers  

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What is difference between scada and virtual instrumentation?

1 Answers  

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Can anybody tell which type of quections are asked in interview for projects? plz give its urgent.....!

2 Answers  

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hello dear i have faced problem in drum level transmitter. the problem is when i engrize the meter meter shows 100% but the actual level 40 or something plz suggest me

7 Answers  

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what is basic working principle of Governer in power plant?

3 Answers  

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