Pulsafeeder PulsaPro PP680 - Page 45

Page 45 of 52
Table 3B – Unit sets and constant values for use in NPIP Equations
Variable
Units Set
English
Metric
NPIP
psi
bar
P
A
psia
bar(a)
P
H
psi
bar
P
V
psia
bar(a)
L
S
feet
meters
R
strokes/min
strokes/min
G
no units
no units
Q
gallons/hr.
liters/hr.
d
inches
millimeters
µ
centipoise
centipoise
L
D
feet
Meters
P
T
psi
bar
P
P
psi
bar
V
P
feet/sec
meters/sec
C
1
24,600
640
C
2
45,700
1.84
C
3
46.8
0.91