why we use -ve voltage in vibration monitoring system.generally we use 4 to 20 mA as output of instrument then why we use voltage in vibration

2 Answers  

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I need control valve ISA hand book. Is there any site to download that big book containing all the pages. Written by Paul Friedmann

0 Answers  

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what is the characteristics of control valve?

7 Answers  

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if change the pid in D value so what action.

2 Answers   Siemens,

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what are the possible reasons if a control valve fails to open/close?

1 Answers   DEWA,

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what is the difference between active and passive loop ?

8 Answers  

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Identify the electrical variable that is either directly or inferentially used by various instruments to determine the value of a measured variable.

4 Answers  

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How it the difference between force balance system and dispalacement balance system?

0 Answers  

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what are the types of a thermocouple

2 Answers  

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Explain the working principle of lvdt?

0 Answers  

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Thermocouple is a transducer but rtd is not transducer why? Both taking heat as a input and giving mv

7 Answers  

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What are the logic behind 2x2 and 2x3 logic and more when ask in interviews

1 Answers   Reliance,

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