What is the difference between a PLC (Programmable logic controller) and DCS (distributed control system)?

7 Answers  

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we are used SAMSON 3730 Smart positioner.please tell me how to calibration this.

1 Answers   TCCL,

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how to install Differential pressure transmitter in gas line.i need transmitter down side.

7 Answers   Rockwell,

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1)unmovable objects have frequency or not?if that object have frequency,how do we measure and transmit? 2)how do u measure the continuity without multimeter? 3)we put 24volt dc supply in railway track how many distance it is traveled without voltage drop?

1 Answers  

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How EMF is generated in Thermocouple

3 Answers  

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How can we say that accuracy of measurement increases by using 3 or 4 wire RTD? because for example: If resistance of RTD element is say r ohms and Resistance of the cable from transmitter to RTD is R ohms And if 4 wire RTD is used, ____._____________________ R ohms | |_____._____________________ R ohms / \ / r ohms \ \ | |______.__________________ R Ohms | |_______._________________ R ohms Then the actual resistance measured will be: Total = r + R/2 + R/2 = r +R Ohms Note: r+R instead of r ohms. hence error

2 Answers  

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how to calibrate transmitter

3 Answers   Sabic,

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what are the inputs (drawings) we need to prepare loop schematics??

1 Answers  

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 why Fahrenheit unit of moistur analyzer transmitter

0 Answers   Infosys, Samsung,

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what is the difference between RTU & MTU in SCADA system?

4 Answers   Bosch,

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can you send remote seal interface level transmitter calculation steps for oil water saperator.

0 Answers   Sasol Firm, Thermax,

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what is span value and zero ? and how set ?

0 Answers  

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