Related to control system, What is difference between 4-20 mA active & 4-20 mA pasive signal.

1 Answers  

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ABB DCS (AC 800 M)redundency take howmany milliseconds to switch from master controller to slave?should be less than DCS scanning time?

2 Answers   SCS,

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it is possible to check the fail safe condition in pressure transmitter. if possible how?

0 Answers  

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What should be the ideal tapping location for pressure differential transmitter for liquid service. If the tapping taken from the top of the pipe then PDIT will work properly or not. If PDIT do not work properly then what minimum corrective action should be taken in order to solve wrong tapping locations.

1 Answers  

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How to define the size of control valve?

5 Answers  

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line up procedure for dp type flow transmitter?

0 Answers  

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how to calculate control valve bonnet size?? or how to select its material?

0 Answers   Jacobs,

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Why we use 250 ohm resistor in series with HART protocol communication?

13 Answers   Chemtrols, Instec, Sabic,

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can anyone tel the syllabus or previous year question paper for BHAVINI(EIE)2014.

0 Answers   Bhavini,

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What is compensation for flow ? Why we use compensation ? What are the factors of different compensation ? We not use then what problems may happen ?

0 Answers  

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can install leveltrol in steam drum for measurment the level of steam drum? if not then why?

1 Answers  

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why generation of syncronized generator increases when frequency of grid is less then 50Hz & generation decreases when grid frequency goes up from 50 Hz, as comparision with set value entered in govering panel?

1 Answers  

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