why use to 250 ohm for hart protocol and why hart communicator not communicate without 250 ohm 

4 Answers   OMV,

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calculate the rane of level use of this values, h=3 meter density=0.9 , whats the rang?

2 Answers  

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what is difference between 1/2"NPT & M20 x 1.5 cable gland?

8 Answers  

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what is the difference between SCADA and DCS?

5 Answers   ACC,

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Q- Why Phase tester is only used for checking AC not DC ?

1 Answers  

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what is the procedure of O2 analyser calibration?

3 Answers   Thermax,

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Explain Three way boiler.

2 Answers   L&T,

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what is the control valve?how many types of control valves are there

6 Answers   Chemin, Hindustan Zinc,

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sir, give me placement papers and interview quistion of birla group company of copper.

0 Answers   Birla,

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why 4 to 20 ma? why cant some other range?

3 Answers  

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I have flow transmiter DP range is 0 to 5000mmwc,(convert) Display to be show in m3/Hr.

3 Answers   Orient,

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What are all the type of vibration measurement measuring in turbine, what is the output of vibration sensor.

3 Answers  

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