Please anyone answer my question, what is the difference between single acting and double acting control valve, in what condition we better choose single acting rather than double acting

2 Answers  

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why we use cascade control and feed foreword control in 3 element control of boiler drum ?what is feed forward and cascade control system ?

0 Answers   Visa Steel,

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What is the principle of capacitance type level transmitter?

0 Answers  

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Explain the functions of the CPU of a PLC.

1 Answers  

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how to calculate range of Dp transmitter

1 Answers  

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Why upper weighing limit of electronics balance is 90% of the total weighing capacity?

0 Answers   Emcure,

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If hart communicator provide 4-20ma source to any transmitter during the callibration?

3 Answers   Hyundai,

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What is the function of SMPS

2 Answers  

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What should be the stanchan Height for installation of Smoke detector & toxic gas detector in field,according to qatar standard

2 Answers  

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What is SCR?

9 Answers  

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why we use 4-20 mA to do calibration of the instruments.why we cant use 0-20 mA?

8 Answers   Emerson, IEM,

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What is Positive Calibration and Negative Calibration?

0 Answers   SA Kent,

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