Fluke RUSKA 2470 - Manual (Page 65)

A-7
PISTON PRESSURE GAUGE PRESSURE CALCUL
ATION
WOR
KSHEET (ENGLISH UNITS)
Date
Expected Temperature, (t)
o
C
Reference Plane Differe
nce, h
inch
A
o(t)
= A
o(23)
[1
+ c(t-23
o
C)]
inch
2
Mass Set Serial No.
Local Gravity, g
L
cm
/sec
2
Piston Serial No.
Air Density,
ρ air
g/cm
3
lb/in
3
A
o(23)
= A
o
at 23
o
C
inch
2
Gravit
y & Buoyancy, K
1
b
1
/psi
Tare, Apparent Mass
pound
b
2
/psi
2
Reference Pressure, P
R
mtorr
psi
c
/ o
C
1 2
3
4
5
6 7 8
9
10
11
12
13
P
B
NOMINA
L
PR
ESSU
R
E
ρ medium
(Mass
Density
)
ρ W
=
(
ρ medi
um
-
ρ ai
r
lb/in
3
)
x
g
L
÷
98
0.665
P
H
=
ρ W
x h
P
A
=
P
B
+ P
H
- P
R
1 +
b
1
P
A
+ b
2
P
A
2
A
e(
t)
=
A
o(
t)
x
Colum
n 6
F =
P
A
x A
e(
t)
M =
F x
K
1
Masses to
be use
d
Remainder
Remainder
T
emp. Coef. = Colum
n 9
x
453.5
92
37 x
c
psi lb
mass/in
3
Lb
force/in
3
psi
psi
in
2
lb for
ce
lb mass
Tare
Plus
lb mass
grams
g/
o
C