Answer / praveen kumar

If the pump discharge pressure 18tph means u need to fix transmitter 18×1.5=27kg/cm2.so the range of transmitter 0-27kg/cm2....even this calculation if u gng to provide the gauge also u have calculate line pressure × 1.5

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what is Dry Leg calibration and where is it used

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how the transmitter send MA?

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what is differance  between SOE an alarams

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Galvanizing.

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How addressable fire systems work? Pl. send details with architect.(Loop), also send details regarding Gas system. Pl. help me.Thanks

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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

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why using 4-20ma not using 0-20or why not using 1- 20ma???????

7 Answers  

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