Why Current(Ampere) is chosen as Fundamental Quanties not Charge(coulomb) ?

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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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with the help of suitable diagrams different types of control valves

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Which buffer solution is used for PH transmitter calibration?

3 Answers  

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What is cut off relay? And why use in PLC and DCS?

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What does a hookup diagram look like? can you give sample drawing. thanks.

1 Answers  

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what is diffrence between analog card and digital card in plc.how analog card work,Please explain in detail.Please send it on abhi_vyas@sify.com

6 Answers  

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In RS 500 SLC 5/03 input change one module card to another card, plz. give steps clearly.

0 Answers   BHL,

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An atmospheric storage tank has a diameter of 20 m and a height of 8m.It is half-full of liquid with the remainder of the space containing air normally at atmospheric pressure. If the connection to atmosphere is accidentally closed off and 10 cubic m of liquid removed, what happens to the internal pressure of the tank? What are the possible consequences for the tank?

1 Answers  

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What is the processor scan time of allen bradle control logix processor 5555 lenin lenin123us@rediff.com

1 Answers  

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In which principles tx ,pressure gauge,Temp gauge,control valve works?

0 Answers   Bajaj, Professional Instruments,

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what is the diffirence between Earth and Neutral

4 Answers  

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