What is possitive and negative feedback?

3 Answers   KNPC,

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Explain Gas Turbine startup and shutdown sequences

0 Answers  

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in which principle pressure tx,level tx ,flow tx,temp tx ,control valve works?

0 Answers   IOCL, JSW,

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Hot calibrate a level transmitter (wet & dry legs)?

1 Answers   Honeywell, IEC,

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how can you set a zero and span of transmitter?

1 Answers   Rockwell,

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Which of the following instruments consumes maximum power during measurement?

3 Answers  

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Explain the difference between plc and cnc?

0 Answers  

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what is plc? breif explain

3 Answers   APL,

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In Increasing temperature why thermocouple used and RTD is not used. Both RTD and Thermocouple have in Range of uses.

5 Answers   L&T,

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Why use ball valves on Gas pipelines instead of gate & or globe valves...means basic diffrence or use of these valves..how designers knows this type of valve with rating is required...

0 Answers   Adgas, GAIL, Oil India, ONGC,

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what is the difference b/w wet leg & dry leg level method

2 Answers  

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If a normal magnetic type flow transmitter that can measure flow, temperature and show this parameters on field, is it possible by any means to get this (flow and temperature) parameters info. On dcs? And if yes then with HART, FO communication or any other communication system?

1 Answers   Process Control Technologies,

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