what is the characteristics of control valve?

7 Answers  

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What is upsampling and downsampling?

1 Answers  

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how to measure the output of RTD given the general formula of  rtd.  

2 Answers  

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If i have 4 Allen Bradely make RS logix 5000 PLC and for viewing that we are using 4 RS view SCADA for 4 different packages. Now, I will want to view two packages on only one SCADA. Then how i will do it?

0 Answers   Essar, Reliance,

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i want formula for flow control.am doing project in flow control using orifice . i know value of the flow level(Q) . upstream(p1) pressure, orifice diameter(Do) , pipe diameter(Di) and oil viscosity(Vi) how can i calculate downstream pressure

0 Answers  

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Yokogawa dcs normally where will change 4-20 MA to DC voltage( node or I/o cards?)

1 Answers  

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in a power plant which system are compensated?

2 Answers  

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Explain Gas Turbine startup and shutdown sequences

0 Answers  

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What is Positive Calibration and Negative Calibration?

0 Answers   SA Kent,

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1. What means HART communicator / where it is used / how to use it? 2. Types of Thermocouples and its temperature ranges / output of thermocouple? 3. Types of RTDs and its temperature ranges / output of RTD? 4. Idea about Temperature Transmitters? 5. Difference between Analog and Digital signals? 6. Difference between “2 wire” and “4 wire” system / instruments? 7. Difference between “Potential” and “Potential free” contact? 8. Types of flow meters / transmitters? 9. Types of level transmitters? 10. Difference between “Power/Control” cable and “Instrument” cable? 11. What means “shield” and “screen” in cables / how it is useful? 12. Draw a schematic of closed loop circuit of flow / level / pressure / temperature? 13. Idea about calibration of Control valve / positioned / I/P? 14. How to bypass a digital/analog signal in PLC/DCS by hardwire and software?

6 Answers   JSL,

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What is the relationship between the universal gravitational constant (G) and the acceleration due to gravity (g)?

3 Answers   APPSC,

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what is the difference between AUTOMATION AND INSTRUMENTATION?

7 Answers  

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