Pepperl+Fuchs LAL-SRW series Manual page 14

WARNING DEVICE LAL-SRW
Installation
3.1.1
EN
12 - EN
Mounting the NVF-104/34-PF Overflow Sensor
Usually, the sensor is mounted with the lower edge a few centimeters above the
normal liquid level (water zero line) in a position so close to the water zero line that
the switching point is surrounded by liquid when an overflow occurs. This occurs
if the coalescence filter is dirty,
■
if the automatic closure device is blocked, or
■
if another situation causes the oily liquid to overflow or become contaminated.
■
The switching point is at the same level as the 5 mm hole on the side of the
sensor.
1
A
B
C
Figure 3.2 Mounting the overflow sensor
1 Overflow sensor NVF-104/34-PF
A Air
B Oil
C Water
L Water zero line
S Sensor switching point
X Alarm limit (maximum liquid level)
S
L