what is the difference between servo valve & proportional valve

1 Answers  

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if drum level is low what is interlock? i mean we put interlock to fd fan or id fan ?

4 Answers  

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Why 24VDC power Supply is used as standard for all loop powered transmitters?

8 Answers   Lupin,

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Explain plc level and its type?

0 Answers  

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Is there’s power on the bus (if so, state whether on the signal bus, or on a separate in the following: a) HART b) Profibus DP c) Profibus PA d) DeviceNet e) Foundation Fieldbus

1 Answers   EIT,

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how to install the Ph and Conductivity analyser? is there are any procedures which has to be maintained.

2 Answers  

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Why we are using temperature and pressure as a reference when measuring flow of steam?

4 Answers   Shell,

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What is live zero and dead zero

2 Answers  

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for indiacation of turbine(china) bearing temperature what type of sensor will be used(i.e. rtd or thermocouple or themister ) ? why it is ? i need clear explanation ?

2 Answers  

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Related to control system, What is difference between 4-20 mA active & 4-20 mA pasive signal.

1 Answers  

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How to change dcs card in online. (Dsc is maxdna)

0 Answers  

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How is work 5/2 sov?

0 Answers  

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