How does a single acting, spring return ball valve actually work? Does it require continuous air supply? 

0 Answers   Process Control Technologies,

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generally transmitter power supply having some range(12v to 35v) but the out put(4-20 mA) must same for given input.If we vary the power supply voltage then output mA also to be change according to V=IR. Is there any voltage regulator in the transmitter ?

2 Answers  

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what is difference between HOT permit and cold permit

0 Answers   Petro Rabigh,

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Definition of reverse and acting controllers:

0 Answers   Monnet,

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CONTROL VALVE OPERATING IN MANUAL BUT NOT IN MANUAL. WHAT SHOULD BE THE PROBLEM ?

0 Answers   GSC,

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KAlman filter code for two dimension?

0 Answers   Tisco,

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what is meant by orderm of a system. will the stability of a system increases by incresing order of a system

1 Answers  

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What is the calibration procedure of Drum level transmitter if range is 0 to -400 mmh2o in lab?

0 Answers  

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How to find the range of DP cell Transmitter for measurement of level in closed vessel.

3 Answers   Rosemount,

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What is a PID controller and how can it to applied to our everyday life?

4 Answers  

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what is the characteristics of control valve?

7 Answers  

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what is seebeck effect?

7 Answers  

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