Dear friends, I have a question: We work on a project which has some boilers to provide steam for desalination unit. The boiler area is safe and the only hazard source is the fuel lines of boilers. I want to know according to NFPA standard which type of instrument should be selected on the fuel line: Eex Type or Non-Eex type? Thanks in advance

2 Answers  

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what is the difference between Cv and air consumption? why the customer needs Air consumption details?

0 Answers  

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Can be operate control valve without positioning if yes ? how and why?

4 Answers   Focus,

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what is diffrence between analog card and digital card in plc.how analog card work,Please explain in detail.Please send it on abhi_vyas@sify.com

6 Answers  

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What is Fieldbus?

3 Answers   NSL,

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Witch type cable use for rtd ,why?

2 Answers   Sugar Factory,

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We Have Two Field bus Pressure Transmitters of Different Sensor Range (I.E One is of Lower range and Another is of Higher Range).Is same Process Line. My Question is Can i provide Saturation Limit to my field Bus Transmitter as We can provide Saturation current limit to HART Instruments. As During Low Pressure Both Working OK ,But During High Pressure, transmitter with Lower sensor range Goes to Fault mode as Beyond its Sensor Limit it can Measure, So may I provide Saturation point Some where to Suppress This Fault during High Pressure.

0 Answers   OPaL,

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how can check the loopchecking for valves?

3 Answers  

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Tell me the field calibration procedure step by step with diagram of temperature transmitter, temperature indicator, flow indicator, level indicator, control valve, thermocouple, pressure indicator (digital & analogue).

1 Answers  

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difference between null and deflecting instrument.

5 Answers   ONGC,

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what is the safety integrity levels (SIL)

1 Answers  

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How many types of sensors are used in instrumentation & what are names

1 Answers   CTC,

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