what is diffrence between cascade & three element system.

3 Answers  

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Make a ladder diagram on LSL valve will close, on PSL valve will open and start the motor

0 Answers   CCIE,

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how can i communicate with non-national instruments device with pc via labVIEW8.2

3 Answers   Google, Mico, National Instruments,

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micromotion flow meter used for

3 Answers   Reliance,

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plz you help about Que paper of mahagenco previous your,any model paper relad to it{maharastra power genration}

0 Answers   MahaGenco,

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How to measure Flow of air line,what is the procedure of creating DP in line to measure Flow!

3 Answers  

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Why we use 250 ohm resister in series hart communicator?

3 Answers   Thermax,

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what is difference between PLC and DCS?

10 Answers  

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Functions of electropneumatic valve positioner:

4 Answers  

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how does we calibrate a square root flow transmitter ,give an example and explain it step by step like range calculation , calibration hook up series connection , zero check , and how to apply pressure , and if not geting proportional output then what should we do ?

0 Answers  

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A DP transmitter is used to measure the level of an open tank. The drain line of the tank is connected to a control valve, and is configured as, if the level of the tank is 90% the valve should get open 10%. And if the tank level is 10%, the valve should get open 90%. Draw wiring diagram and explain how to configure DP transmitter and control valve using HART communicator. If the span error at output is 1%, what will be the %opening of the control valve at 60% level of the tank?

0 Answers  

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What is surge in compressors? How to detect and control it?

3 Answers   Kharafi National,

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