Answer / mugil

the principle of wheat stone bridge is resistance is
converted in to some electrical signal(Milli volt).

What is the use of valve positioner?

1 Answers   CCIE,

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In dcs panel we are using diff type of modules ?what is module ? what is the use of modules ?diff type of module?

0 Answers  

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what is the control valve?how many types of control valves are there

6 Answers   Chemin, Hindustan Zinc,

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Pls.could any one Clarify the following with an example. 1.At What condition Close on Rise and Close on Fall Pressure Switch contacts are used. 2.If Pressure is abnormal as per set pressure,if connecting Terminal of pressure switch breaks,how the voltage extends to Relay base. 3.Are these contacts come under fail safe philasaphy.

1 Answers  

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State some of balance principle’ advantages?

0 Answers  

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how we calculate the range of flow from a dp?i mean if we have a dp,3810mm h2o.how much flow ranges we can use for this DP?

1 Answers  

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in a power plant main steam flow is volumetric or mass flow? is it required compensation?

1 Answers   Wartsila,

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what is the difference b/w normal thermocouple and skin type thermocouple?

1 Answers   Heisco,

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How can we say that accuracy of measurement increases by using 3 or 4 wire RTD? because for example: If resistance of RTD element is say r ohms and Resistance of the cable from transmitter to RTD is R ohms And if 4 wire RTD is used, ____._____________________ R ohms | |_____._____________________ R ohms / \ / r ohms \ \ | |______.__________________ R Ohms | |_______._________________ R ohms Then the actual resistance measured will be: Total = r + R/2 + R/2 = r +R Ohms Note: r+R instead of r ohms. hence error

2 Answers  

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WHEN BOTH WIRES OF THERMOCOUPLE R SHORTED WHAT IS THE OUTPUT THE TEMP ARE 0,30,250,320

13 Answers  

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what is input and output cards of plc needs to be hot swappable mean

1 Answers  

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The wire is disconnected from the temperature sending unit (magnetic gauge). A voltmeter connected to the wire reads 0v. What does this indicate?

2 Answers  

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