13
4 Mounting
VEGAPOINT 21 • Transistor (NPN/PNP)
56623-EN-210210
Note that the switching point varies depending on the type of medium
and the mounting position of the sensor.
Protect your instrument against moisture ingress through the following
measures:
•
Use a suitable connection cable (see chapter "
Connecting to
power supply
")
•
Tighten the cable gland or plug connector
•
Lead the connection cable downward in front of the cable entry or
plug connector
This applies mainly to outdoor installations, in areas where high
humidity is expected (e.g. through cleaning processes) and on cooled
or heated vessels.
The level switch is a measuring device for stationary screw mounting
and must be treated accordingly. Damage to the measuring tip will
destroy the instrument.
Use the hexagon above the thread for screwing in.
After mounting, make sure that the process fitting is screwed in cor-
rectly and thus securely seals even at maximum process pressure.
4.2 Mounting instructions
In adhesive and viscous media, the surfaces of the sensor should
protrude into the vessel to avoid buildup. Therefore mounting bosses
should not exceed a certain length.
Fig. 5: Adhesive products
In horizontal pipelines, avoid mounting in the upper or lower area of
the pipe.
In the upper part of the pipe cavities can form due to air inclusions.
Solids can settle in the lower pipe area. Both can lead to measure-
ment errors.
In horizontal pipelines, lateral installation is therefore recommended.
Protection against mois-
ture
Handling
Adhesive products
