How 2 calibrate level tank having large height..?

2 Answers  

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how many types 0f thermocouples?

6 Answers   HZL,

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What is exact difference between the panel earthing and system earthing in DCS system. What is the value of resistence.

0 Answers  

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what are the possible reasons if a control valve fails to open/close?

1 Answers   DEWA,

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what is the input of ph sensor and meter during the calibration time and what is the output?

1 Answers   Sabic,

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what is the difference in Kg/cm2 and mmwc?

2 Answers   Niko,

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how u calibate pr tx without master tx?

2 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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if the t/c o/p is 4-20mv then how plc recognize it because we are dealing with the 4-20ma in the plc ????????????????

7 Answers  

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what is the square root flow transmitter formulla ?

2 Answers  

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how eddy current loss in probe and induced gap voltage accros probe trip and shaft

1 Answers   Reliance,

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what do u mean by 2/3 soleniod valves?

8 Answers   Nile Sugar,

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