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I am applied 100 % pressure on to the air to open control valve,but the valve is not fully closed..and 10-15% is open the valve. how to calibrate the control valve?
OPaL,
3 4306I have a problem with a valve (air to close). When it is fully closed and try to open 1% it doesn't responce till 3% open suddenly more than 3% then back to 3%. I tried to tune positioner then removed it, the problem still exist. Any idea
3 3768dear sir we have insatlled positioner model no.sipart PS2 make Siemens at our control valves . now problem is if we want to increase the response of valve opening speedy /fast. what parameters do we change for positioner ? any idea. please guide us.
CPL,
1891how can i calibrate the temperatuture gauge used by temperature bath(dry block) i mean step by step procedure?
1677Pressure tx shows 1 mbar but we need 1000 mbar at this process condition .. how can we sort it out .
1703Post New Instrumentation Questions
what is the imbustion control loop
Any one can help me to identified, how can we interchange the device in FF
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it is possible to check the fail safe condition in pressure transmitter. if possible how?
WHY THE DEGREE OF VALVE PLUG AND VALVE SEAT IS SLIGTLY DIFFERENT I CONTROL VALVE TRIM DESIGN
䑰ҕ䔈ҕ䖠ҕ䘰ҕ䛀ҕ䝐ҕ䟐ҕ䢐ҕ䥐ҕŹ
What are the uses of orifice plates?
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Pressure tx shows 1 mbar but we need 1000 mbar at this process condition .. how can we sort it out .
what is the difference between scaler and vector drive
What are the materials available to prepare individually for competetive exams in Instrumentation field? Plz reply...
in differential pressure transmitter,min&max pressure range for hp&lp
Q- What are the application in which PNP transistor is preferred over NPN ?
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