Why 4ma - 20ma signal used in instrumentation??

5 Answers  

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If we increase D what will be the controller action?

2 Answers  

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Programmable Logic control.

0 Answers   CCIE, NCVT,

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i am working in the automation company...i want to just know how actully pid control valves are tune????...

1 Answers  

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Advantages of servers over normal desktop in PLC SCADA system

1 Answers   InfoMedia,

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what is stability

2 Answers   IOCL,

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What is difference between reset and initialization in system.

1 Answers   Marafiq,

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Can anybody tell me the exact explanation for Functional calibration?When it should be done on process or on lab? Advanced Thanks

2 Answers  

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Is there’s power on the bus (if so, state whether on the signal bus, or on a separate in the following: a) HART b) Profibus DP c) Profibus PA d) DeviceNet e) Foundation Fieldbus

1 Answers   EIT,

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what is pico fuse? how this different rom othe fuses and how to locate it inside the card?

1 Answers  

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what is Micro-switch and where it is used......?

7 Answers  

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what is stroke check for field instument transmetter's & AOV's

0 Answers  

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