Page 17/46
Installation
4.2
Installation height
In the case of tanks to the DIN standard, the response height "h" and the adjustment dimen-
sion "x" needed for this can be taken from the tables in the Section "Adjustment dimension".
The diameter, nominal capacity (particularly for multi-chamber tanks) and the height of the
manway nozzle height including the tank lid are important in calculating the adjustment di-
mension "x".
The installation height is adjusted using the control dimension "y" (see Figure below):
Control dimension "y" = probe length - adjustment dimension "x"
Figure 13: Control dimension "y"
If the Overfill Prevention Sensor is mounted in tanks that are not detailed in the ta-
bles, it must be ensured that the maximum filling ratio (volumes) of 95% for above-
ground and 97% for underground tanks (minimum 300 mm earth covering) is not
exceeded.
The adjustment dimension "x" cakes into consideration a manway nozzle height of
100 mm for tanks according to DIN 6608, 6616, 6618, and EN 12285, and 60 mm for
tanks according to DIN 6619, 6623 and 6624, as well as an overall thickness of
20 mm of the tank lid including sealing (see Tables of adjustment dimensions). In
the case of different heights, the adjustment dimension "x" must be amended cor-
respondingly.
The response height "h" and the adjustment dimensions "x" detailed in the tables
take into consideration shutdown volumes (due to switching delays in the control
circuit of the controller) for permanently installed fill pipes up to 20 m in length. For
tanks with permanently installed fill pipes over 20 m in length, the adjustment di-
mensions "x" must be increased by an amount that corresponds to the additional
volumes in the pipe.
x
y
Pr
ob
e l
en
gt
h
a = manway nozzle height
x = adjustment dimension
y = control dimension
h = response height
a
h
