39
Zero liquid level
H L
(Atmosphere)
ρ
E
H
L
E
ρ
Provide elevation by ρ .
E
A
A
ρ, ρ
1
: Specific-gravity of the measured liquid
ρ
2
:
Specific-gravity of the seal liquid
0.935: Specific-gravity of the seal liquid
Zero liquid level
L
E
ρ
Provide elevation by ρ .
E
B
Zero liquidlevel
H
L
E
ρ
1
ρ
2
L
E
ρ
1
ρ
2
S
C
C
Provide suppression by (ρ
2
S
-ρ
1
E
)
Zero liquid level
L
E
2
E
1
ρ
D
Provide elevation by (0.935
E
1
+ρ
E
2
)
E
Provide suppression by (0.935
S
+ρ
E
)
Zero liquid
level
H
L
E
ρ
S
Fig. 5-15. Calculation of elevation/suppression values
