Answer / rameez_rz2000

1st of all we have to open the control valve 50% and then
the feed back link of positioner will came at 180 degree to
control vale and now we will adjust the screw

Answer / rk

think positioner is nothing but a control valve.installation of positioner is done by closing the valve,then it has flange which helps to b screwed with pipes.

what is disadvantage of field bus (ff)type of instrument

1 Answers  

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Please send me the sample question of Instrumentation of hpcl/iocl exam. my mail id hihi_kiholo@rediffmail.com

0 Answers  

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How to get Cv of control valve having following parameter ,i.e inlet pressure 4.5kg/cm2 outlet pressure 1 kg/cm2 specific gravity 0.808

3 Answers  

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any body pl suggest me the best type of transmitter for level monitoring of a distillation still which consists of highly corrosive and inflammable liquid.closed vessel height=5000mm especially in petrochemical industries

1 Answers  

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what is the difference between plc and pc?

5 Answers   ADI, NFCL, Wipro,

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What are the characteristics of Control Valve

2 Answers   Ispat,

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what is scale factor of proximitor & unit of the vibration.

0 Answers   ADMA OPCO,

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Explain the combusion chamber

0 Answers   IFFCO,

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Explain signal isolator

0 Answers  

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In Boiler Drum Level- Level control valve how can it tuning (PID)?

2 Answers  

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WHY THE DEGREE OF VALVE PLUG AND VALVE SEAT IS SLIGTLY DIFFERENT I CONTROL VALVE TRIM DESIGN

0 Answers  

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How to calculate the flow rate in Vortex flow meter?What is K factor?Can you give me an example calculation to understand the same as better?

1 Answers   npcc, Zadco,

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