To calibrate a valve first check the input signal range if
it is 0.2 to 1.0 Kg/cm2 or different.
Calculate the span ( Difference between higher limit to
lower limit=1.0-0.2=.8 ) Now divide it in four equal parts
that is 0.2 Kg/cm2 this is 25% of the span.
Now check the valve travel like 2 inches, 3 inches or any
other value Divide it in four equal parts 25% of the travel.
Apply 25% of the span value+ 0.2= 0.4 Kg/cm2 it is 25% of
travel and apply full span value and see you get the
complete travel if you find difference adjust the spring
BY using DRUG calibrater we can easily calibrate just we
need a air line having pressure of 6kg as input of CV.
by giving 4-20mA signal through DRUG.
4mA CV in close position
If the valve is SMART now we can use a HART communicator to calibrate the control valve.Give the supply pressure according to the valve name plate then use HART communicator and give 0% 25% 50% 75% & 100% check the travelling of valve
How to calculate 47Liter H2 Gas cyilnder consumtion?
Cylinder inlet Pressure is 200bar and Discharge pressure
is 6.0bar. Flow is 100ml/min.For the above condition how
many days one cylinder can be used?