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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 4305I 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 3765dear 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,
1890how can i calibrate the temperatuture gauge used by temperature bath(dry block) i mean step by step procedure?
1674Pressure 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 force balance principle? State some of its’ advantages.
We Have Two Field bus Pressure Transmitters of Different Sensor Range (I.E One is of Lower range and Another is of Higher Range).Is same Process Line. My Question is Can i provide Saturation Limit to my field Bus Transmitter as We can provide Saturation current limit to HART Instruments. As During Low Pressure Both Working OK ,But During High Pressure, transmitter with Lower sensor range Goes to Fault mode as Beyond its Sensor Limit it can Measure, So may I provide Saturation point Some where to Suppress This Fault during High Pressure.
If P will increase then what will happen with PID?
we are using centum vp as monitoring with Dell precision work station T3600 but some times PC(s) are restarted automatically . how we can solve this problem? thanks
How is PH sensor works ?
Why is it necessary to use compensation leg to measure the liquid level in a closed or pressurized tank?
What is ultrasonic flowmeter?
what is dc moter.
Gas equation
Difference between 2-Valve Manifolds, 3-Valve Manifolds and 5-Valve Manifolds 3 with diagram
What is compensation for flow ? Why we use compensation ? What are the factors of different compensation ? We not use then what problems may happen ?
How vortex sensor used for steam flow measurment can be checked on line i.e without taking out from process line.
what should he know if he is an assitent engineer instrumentation in cement industries of experience of 10 - 15 year.
Why thermo wells are used? What materials are used in thermo wells?
What are advantages and disadvantage of the ac supply load cell?
