Answer / nilesh

Normally there is a P&I( Process and Instrumentation)
diagram not E&I diagram.In P&ID circle symbole related to
field mounted instrument while Square box with circle
inside is related to function in DCS.There is number of
other symbole in each catagory.

Answer / ganesh prajapati

In P&ID, ESD signal is represented by a triangle with ESD
mentioned inside a triangle.

Answer / d das

ok mr. nilesh. but which one is ESD signal how should we
know? in a P&ID drawing.

given a processor batch of 1000 resistors moving on the conveyor belting in a large factory. the resistors is value at 10k ohms each but when the resistors reach the quality control, some of the resistor has been rejected caused by failure in manufacturing.the high quality measurement is used to determine the failure. describe the instrumentation terminology in measurement of a system above with explaining the important in:- -reliability -sensitivity -repeatability -precision -range -resolution -linearity -hysteresis -error -accuracy (answer must related to the scenario above)

0 Answers  

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If P will increase then what will happen with PID?

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What is hp & mp seperator .& what is its working principle ?

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What is hook's law

4 Answers  

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what do you know about Foundation Fieldbus?

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can install leveltrol in steam drum for measurment the level of steam drum? if not then why?

1 Answers  

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how can i calibrate the temperatuture gauge used by temperature bath(dry block) i mean step by step procedure?

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Is it ok, to use non-contact type Radar type LT, on a tank that is half circular from the bottom side? If yes the, isn't the waves gonna bent in other directions? 

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In case of Transmitter's(e.g.Ultrasonic Flow meter ) we have an normal practise of selction of upstream and downstream distance such as (20D and 5D ).can anyone please let me know whow to calculate "D" ?? i guess it refers to pipe thickness is t right ?

2 Answers  

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Area classification, Equipments, Gas groups, temperature classification, Ingress protection, Fire Extinguishers.

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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?

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