GOK GWG Serie Manual Del Usuario página 20

Table 6: Calculation option for the adjusting dimension X
a = dimension a= H - L
b = tank wall thickness
1. maximum volumetric flow rate of the booster pump of the road tanker
2. switching and closing delays of the booster pump of the road tanker
Level sensor according to measurement / datasheet
Switch / relay / or such like
Booster pump, flow time
Shut-off fitting:
• mechanical, manually operated time alarm to closing start, closing
time:
• electrically, pneumatically, or hydraulically operated, closing time:
Total time (t
total
3. Overrun volumeV
Overrun volume from delays:
V = Q • (t
1 max total
Overrun volume from filler line:
V = (π / 4) • D
2 i
D = internal pipe diameter in mm
i
L = length of the filler line in m
FL
V = V + V
4 1 2
4. LevelL
1
Volume at admissible level according to table 1 issue 1.
Overrun volume
Volume at level L
Then, the volume at level V
calculation, in the level L
The adjusting dimension X for the GWG must be determined taking into account* the tank
shape:
Installation on tank ceiling:
* if applicable Take into account ADJUSTING DIMENSION X AND SUBSEQUENT LEAK
PROTECTION LINING.
8 / 12
- b
1
= t + t + t + t ):
3 4
1 2
4
/ 60)
² • L / 1000
FL
V = V - V
1 5 3 4
value results, in combination with the calibration chart or by
5
.
1
X = H - L
Limit indikator GWG type GWD
H = height or diameter of the tank
k = height bushing or threaded flange
- b
1
Q
L/min
max
Time
t
s
1
t
s
2
t
s
3
s
t
4
s
T
s
total
V
L
1
V
L
2
V
L
4
V
L
3
V
L
4
V
L
5
= mm
Part no. 15 382 56 b