Why 4ma - 20ma signal used in instrumentation??

5 Answers  

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how to callibrate a new i/p converter

7 Answers   TATA,

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what is the principle of vibration

3 Answers  

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What is critcal speed. what is resonant frequency. why we want to cross crtcal speed on higher RPM (early).

0 Answers  

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how many parts of valve positioner?

1 Answers   Kentz,

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steam drum level transmitter calibration procedure? with example?

1 Answers  

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can you send remote seal interface level transmitter calculation steps for oil water saperator.

0 Answers   Sasol Firm, Thermax,

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HOW DPT WORKS?

6 Answers   Essar,

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How to derive IO Count (AI, AO, DI and DO ) from a Field instrument (FI) Bill of Quantities (BOQ) given by client.

1 Answers  

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how to calibrate steam control valve in steam turbine

0 Answers  

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wht is snap action switch?where it is used?is there any diff between snap action switch and normal pressure switch?

1 Answers   ONGC,

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please send me the inteview questions in IOCL

0 Answers   IOCL,

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