Pepperl+Fuchs LAL-SRW3 Manual page 15

WARNING DEVICE LAL-SRW3
Installation
3.1.2 Mounting the SLU-103-** Sludge Level Sensor
The sensor must be immersed when the liquid is at its normal level (water zero
line).
The exact immersion depth depends on
the type of oil/petrol separator,
■
its design
■
and the height of the maximum sludge layer thickness.
■
The sensor must always be immersed in the liquid. The switching point of the
sensor is located at the same level as the reflectors.
Figure 3.3
1 Sludge level sensor SLU-103-**
A Air
B Oil
C Water
D Sludge
L Water zero line
S Sensor switching point
X Alarm limit (maximum sludge layer thickness)
A
B
C
1
D
Mounting the sludge level sensor
L
S
EN
EN - 13