Siemens SITRANS LG250 Operating Instructions Manual page 16

Welding work
Inflowing medium
Measuring range
16
1
Fig. 7: Socket must be installed flush
1 Unfavourable mounting
2 Socket flush - optimum mounting
Before beginning the welding work, remove the electronics module
from the sensor. By doing this, you avoid damage to the electronics
through inductive coupling.
Do not mount the instruments in or above the filling stream. Make sure
that you detect the medium surface, not the inflowing product.
Fig. 8: Mounting of the sensor with inflowing medium
The reference plane for the measuring range of the sensors is the
sealing surface of the thread or flange.
Keep in mind that a min. distance must be maintained below the refer-
ence plane and possibly also at the end of the probe - measurement
in these areas is not possible (dead zone). The length of the cable
can be used all the way to the end only when measuring conductive
products. These dead zones for different mediums are listed in chap-
ter "Technical data". Keep in mind for the adjustment that the default
setting for the measuring range refers to water.
SITRANS LG250 - Operating Instructions
2
PBD-51041053