how to connect the HART protocal with control valves

1 Answers  

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what will happen if transmitter wire get shoted?

2 Answers   Sabic,

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What pressure transmitter.

1 Answers  

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what is start up vent valve ? why it is used in boiler?

8 Answers   ACC, Bhushan Power Steel,

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please give me the syllabus and sample questions if possible for Instrumentation for Vizag Steel plant MT (Trainee) 2009 exam

1 Answers   Pedvak, Steel Plant, Vizag Steel,

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What is the difference in clamp on type and inline type ultrasonic flow transmitter.

1 Answers  

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How can we say that accuracy of measurement increases by using 3 or 4 wire RTD? because for example: If resistance of RTD element is say r ohms and Resistance of the cable from transmitter to RTD is R ohms And if 4 wire RTD is used, ____._____________________ R ohms | |_____._____________________ R ohms / \ / r ohms \ \ | |______.__________________ R Ohms | |_______._________________ R ohms Then the actual resistance measured will be: Total = r + R/2 + R/2 = r +R Ohms Note: r+R instead of r ohms. hence error

2 Answers  

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How to calibration of vibration probe

1 Answers   Mina Al Ahmadi Refinery,

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If an Instrument has 550 ohm internal resistance and the cable used for that instrument is 0.5 ohm per meter resistance. If the voltage is 12volt.How much length cable can be used? Please tell me its Calculation formula.

5 Answers   MOL,

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in DCS or PLC we can not put all ai or di,there is calculation through which we can accomodate certain no of digital and analog signal.I need to know that calculation

1 Answers  

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How to calculate mmwc values into tonnes?

0 Answers  

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When LP SURGE happening in compressor

3 Answers   KNPC, KOC,

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