Pepperl+Fuchs NVD-111 Anleitungen Seite 19

WARNING DEVICE NVD-111
Installation
3.1.3 Mounting the FAU-104 Fat Level Sensor
The sensor must be immersed a few centimeters when the liquid is at its normal
level (water zero line).
The exact immersion depth depends on
the type of grease interceptor,
■
its design
■
and the height of the maximum fat 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 (see chapter 2.3).
Figure 3.5
1 Fat level sensor FAU-104
A Air
B Fat, oil, grease (FOG)
C Water
L Water zero line
S Sensor switching point
X Alarm limit (maximum fat layer thickness)
A
B
1
C
Mounting the fat level sensor
L
S
EN
EN - 17