why used three wire in RTD.

8 Answers   BARC,

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What is two wire system and how it work

2 Answers   Bhel, IFFCO,

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What is the use instrument barriers? Can you give me review materials about this?

1 Answers  

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any body please send me the old question papers of ongc test.

0 Answers   NTPC,

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SOME OF YOUR QUESTIONS ARE NOT MAKING ANY SENSE SO TRY AND PUT IN A LITTLE BIT MORE EFFORT BEFORE YOU POST A QUESTION. WE WILL ONLY HELP THOSE WHO WE CAN SEE ARE TRYING TO HELP THEMSELVES.

0 Answers  

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how to define the P,I,D value in tuning pid loops in online.

1 Answers   Thermax,

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What is the definition of direct acting valve & reverse acting valve

2 Answers  

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how to change 4 wire rtd transmitter into a 3 wire rtd transmitter? as our transmitter is working for 4 wire rtd, what should do for working on 3 wire rtd transmitter

1 Answers   HHJ,

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Why do we go for 4-20mA? why not other standara?

6 Answers  

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what is the difference between two wire transmitter and 4- wire transmitter

3 Answers  

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What is Burnout feature in a recorder?

1 Answers   CCIE,

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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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