why we are using -24 vdc in plc?

1 Answers   CGL,

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Can any body help me,The GE Mark V control system is windows based or Dos based?

3 Answers  

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what is datum line?

4 Answers  

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why we use 3 wire rtd direct wiring for temperature measurement instead of temperature transmitter like bearing temperature

0 Answers   ABG Energy,

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How to Calibrate Vortex Flow transmitter in field

0 Answers  

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How to regulate the flow of Air in 4" line, with max flow of 330 nm3/hr and Pressure of 0.5 bar? please suggest the type of instrument required.

0 Answers  

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

0 Answers  

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If a warning lamp will operate with the ground circuit is bypassed with a jumper wire to ground, what should you check?

0 Answers  

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whats the abbreviation of IOP? is it instrument of power or input open problem?

0 Answers  

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WHAT IS D/O D/I AND A/O A/I PLZ EXPLAIN

2 Answers  

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hay friends, i am in trouble to understand PID controller. several times i have study but it is not clear to me have you a simple way to understand.

1 Answers  

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Difference between ultra sonic flow meter

0 Answers  

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