Interested to Buy Any Domain ? << Click Here >> for more details...
Control valve Flow characteristic. How the equal percentege
curve form?
- 5 Answers
- 10778 Views
- I also Faced
- E-Mail Answers
Answer Posted / k.surya mutyalaro
each increment in valve lift increases the flowrate by a
certain percentage of the previous flow. The relationship
between valve lift and orifice size (and therefore flowrate)
is not linear
but it is depends on Valve rangeability (ratio of the
maximum to minimum controllable flowrate)
v(h)=((e power x)/t) * Vmax
V(h)=
Volumetric flow through the valve at lift H.
x
=
(ln t) H Note: 'In' is a mathematical function known as
'natural logarithm'.
t
=
Valve rangeability
H
=
Valve lift (0 = closed, 1 = fully open)
max
=
Maximum volumetric flow through the valve
it is very important that the Valve rangeability defers
from the valve to valve.
| Is This Answer Correct ? | 1 Yes | 0 No |
Post New Answer View All Answers
What is the exact differences between HART,FOUNDATION FIELDBUS,PROFIBUS?
why micro controller 8051/52's clock frequency is internally divide by 12 ?? and why it is further divide by 32 in UART serial communication ??
Somebody can explain me about >Critical Loops, calibrations, ESD critical Loop checks, Logic Diagram / Cause & Effect checks for ESD loops,
sir ,iam in dem urgent need of HPCL Paper of Instrumentation Branch plz send me at your earliest convenience at ujjwal_sharma1983@yahoo.com
Do you have reference list?
Describe the function of Accumulator into the Pump
What is modbus?
Hi Friends , i need one urgent help , i am preparing for M.tech entrance examination , i need some obejective questions related to instrumentation field. where can i get those ? can anyone help me pls ?
What are different types of orifice plates?
What is frequency factor in massflow meter? When using frequency output?
how to calibrate Necleuonic level transmitter.?
how to calculate the total flow in square root
Why we are using DPT(Differential Pressure Transmitter) in separator instead of level trasmitter?
can any one tell me when ongc placement test and its forms is available????/ pls tell me if u know
What is the difference between modbus,fieldbus & profibus
