why we use -ve voltages in vibration prob?

1 Answers  

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How to calibrate the magnetic flow meter and how to correct the flow if it is showing more flow.

5 Answers   Bohra Industries Limited, TCL,

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What is eddy current? Describe the operating principle of proximity probe.

0 Answers  

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hi i am eswar i want to know the instrumentation interview questations for eil(engineers india ltd) i have applied for engineer post in eil please help in this.my mail id eswar310@gmail.com

0 Answers  

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In field side transmitter voltage droping here no loose connection then what will happen?

2 Answers   Edac,

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What is loop checking ?

10 Answers   Kharafi National, Petrofac, Samsung,

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on which principle control valve works?

3 Answers   Lupin, Reliance,

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what is the difference between profibus and controlnet networking.

0 Answers   HZL,

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What is hook's law

4 Answers  

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what is mapping in instrumentation and control engineering

2 Answers  

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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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Flow tax range 0 to 100 mmh2o ,flow rate 40 tons /hr, I want change flow rate example 42 tons/hr so tx range ?

2 Answers  

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