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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how u meassure room temp?is it possible 2 meassure room temp by rtd or thermocouple?between rtd n thrmocouple which is more regard?3 meassure diff. between rtd n thermocouple?

3 Answers  

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what is purpose of three way manifold valve using for dp transmitter

1 Answers  

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how to know the URL and LRL for steam drum level and why the calibration range is in negative ?

1 Answers   JSW, Samsung,

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An RTD is a_________________________.it works as follows

2 Answers  

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how is work pressure switch& level switch?what is the principle of this?

0 Answers   Binani,

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Which is the best field foundation bus. ( FF ) Yokogawa, Honeywell or others ?

0 Answers   GNFC,

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What is the diffrence between ff tx and non ff tx

0 Answers   Jindal, Rosemount,

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i have steam drum height 1000mm. and i want to placed the transmitter below the tap.how i calculate.

0 Answers   OEG,

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why we are using ungrounded RTD sensor and what is difference between grounded RTD and Ungrounded?

1 Answers  

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how u measure flow?orifice measurement?why all ft in square root?

1 Answers  

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State bernoulli’s application.

0 Answers  

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