What is Integral and Derivative control?

5 Answers   Qatar Petroleums,

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whats the reason for control valve not installed -90degree (down position)

1 Answers  

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What are primary elements of measuring pressure?

0 Answers  

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how to calibrate the radar transmitter for measuring the exact tank level if tank is having agitator moving continiously because due to agitator tank surface level will vary every time.

2 Answers  

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Difference between guide wave radar & non guide wave radar ?

1 Answers   UPL,

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What are use of positioner.

6 Answers  

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PID controller is used for which type of compensation…… a) lead comp. b) lag com. c) lead lag com.

12 Answers   Engineers India Limited,

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is there any digitel grevity meter availaible in the market by which we can measure specific gravity of a battery?

0 Answers  

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Why do we use 24V DC supply in instrumentation? What are its merits and demerits??

1 Answers   JSW, MJPRU,

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please any body have most important data for study for saudi aramco test of instrument QC thanks email shahnaveedullah@gmail.com

0 Answers  

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Why thermo wells are used?

1 Answers  

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in the boiler in the main steam line and its bypass line and the startup vent vales are only motorised valves why cant we use other types of valves such as pneumatic.

3 Answers  

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