Answer / nidhi

control valav has mainly three characteristic
1. linear
2. quick opening
3. Equal percentage

Answer / pragati sutar

control valve mainly has 2 characteristics- Install and
inherent. inherent char. further classified as 1.equal %
2.quick opening 3.linear charactaeristics

Answer / s. kanniyappan

1) linear
2) square root
3) quick opening
4) equal percentage
5) parabolic
6) hyperbolic

Answer / sam

The basic char of cv's are
1) Inherent char
2) Installed char

Under Inherent char
a) quick opening
b)Equal percentage
c)linear

Answer / faiyaz

1.Linear
2.Equal percentage
3.Quick opening
4.Square root
5.Hyperbolic

Answer / sukumar

control valve three types of cheracterstics

equal % means give 50% valve opening 35%
liner means give 50% valve opening 50%

quick opening means give 50% valve openig 65%

what is mapping in instrumentation and control engineering

2 Answers  

what is unit and element of viberation?

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Speedtronic system .

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what is load line in control valve?

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How earthing can be checked????

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Where do we consider the pressure in mbar & where do we consider the pressure in bar & why is it so ?

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How to isolate a DPT from line in the condition that process must not be disturbed,and process is also critical and no bypass is available.?

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in plc source and sink meaning?

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what is droop mode n frequency mode in wood ward governor?

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I heard that we can use flow transmitter for level measurment also hw it is?

2 Answers  

What is standard of DCS panel design?and what is step of DCS panel design?wiring and type of connector(screw or DB connector)

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why do 4 mA serves as 0% not 0 mA?

10 Answers