Fluke RUSKA 2470 - Manual (Page 67)

A-9
PISTON PRESSURE GAUGE PRESSURE
CALCULATION WOR
KSHEET (SI UNITS)
Date
Expected Temperature, (t)
o
C
Reference Plane Differe
nce, h
m
A
o(t)
= A
o(23)
[1
+ c(t-23
o
C)]
m
2
Mass Set Serial No.
Local Gravity, g
L
m/s
ec
2
Piston Serial No.
Air Density,
ρ air
g/cm
3
kg/m
3
A
o(23)
= A
o
at 23
o
C
m
2
Gravit
y & Buoyancy, K
2
b
1
/MPa
/Pa
Tare,
Mass
kg
b
2
/Mpa
2
/Pa
2
Reference Pressure, P
R
mtorr
Pa
c
/ o
C
1 2
3
4
5
6
7
8
9
10
11
12
P
B
NOMINA
L
PR
ESSU
R
E
ρ medium
(Ma
ss De
n
sity
)
ρ W
=
(
ρ medi
um
-
ρ ai
r
kg/m
3
)
x g
L
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
2
Masses
to be used
Remainder
T
emp. Coef. = Colum
n 9
x
100
0g/kg x
c
Pa kg/m
3
N/m
3
Pa
Pa m
2
N
kg
Tare
Plus
grams
g/
o
C