why I need valve guard and whats different between guard and positioner ??

0 Answers  

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Please can anybody tell me the step by step procedure for calibrating the Pr,Lvl,Fl,Temp transmitter on process?

1 Answers  

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Air pressure in a pressure vessel can rise or fall at up to 2.5kpa/s.The pressure is sampled every 0.5 seconds.If range of the the pressure indication is 0 to 1500 kPa, what is the max value of the error due to sampling in % of Span

2 Answers  

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Explain bernoulli’s theorem.

0 Answers  

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please send me hpcl placement papers

13 Answers   HPCL, L&T,

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If I installed wrong directions orifice plate then what showing value d.p transmitter?

2 Answers   Forbes, STS,

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What is surge in compressors? How to detect and control it?

3 Answers   Kharafi National,

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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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my data card only does run in my mobile so how can change it that it run other mobile & computer and i can stor data in my data card

0 Answers  

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what is the difference between E/P positioner and I/P positioner in control valve , in which application the respective positioner are used in.

1 Answers   ABB,

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I am applied 100 % pressure on to the air to open control valve,but the valve is not fully closed..and 10-15% is open the valve. how to calibrate the control valve?

3 Answers   OPaL,

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What is the difference bitween control net scaner and device net scaner

0 Answers   Binani,

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