Float Tank Gauge LT11/12
36
Hauser
Ø400 float
Lf = { Hf +
A ×
ρ
(
W-w
)
- Q×
ρ
} ×10
= { 5.45 +
1256.64
ρ
(
W-1200
)
- 5260
ρ
} ×10
L
B
=
W-w
A
ρ
1
(
-1)×10
=
W-1200
1256.64
ρ
1
(
-1)×10
Lf
:
When a float start to float, level height (mm)
W
:
Float weight (g)
A
:
Cross-sectional area of float cylindrical part (cm
2
)
Hf
:
Half of float height
(
cm
)
w
:
Measuring tape hoisting force in conster (g
)
ρ:
Gravity of actual liquit
(
g/cm
3
)
Q
:
Half of float volume
(
cm
3
)
LB
:
When filling water, indicator corrective value (mm)
Graph 1
ρ
φ
400
ρ
L
B
>0
L
B
<0
φ
400
Calculating formula
①
when tank is empty
②
When putting water in tank
Ø 400 float
30
40
50
60
70
80
90
0.5
1.0
1.5
2.0
Measuring liquid density
ρ
(g/cm
3
)
L
f(
m
m
)
-30
-20
-10
0
10
20
30
L
B
(mm)
①
4.2kg
:
L
B
①
4.2kg
:
L
f
②
5.0kg
:
L
B
③
8.0kg
:
L
B
②
5.0kg
:
L
f
③
8.0kg
:
L
f
Lf
Draft to density
Water… Draft to density 1.0g/cm
3
Draft to density
4 Display