VEGA VEGACAL 69 For connection to a signal conditioning instrument - Manual (Page 12)

12
4 Mounting
VEGACAL 69 • For connection to a signal conditioning instrument
31181-EN-130917
4 Mounting
4.1 General instructions
Make sure that all parts of the instrument coming in direct contact
with the process, especially the sensor element, process seal and
process fitting, are suitable for the existing process conditions, such
as process pressure, process temperature as well as the chemical
properties of the medium.
You can find the specifications in chapter "Technical data" and on the
nameplate.
Select such a mounting location that the instrument is within easy
reach for mounting and connecting. For this purpose the housing can
be rotated by 330° without any tools being required.
Before beginning the welding work, remove the electronics module
from the sensor. By doing this, you avoid damage to the electronics
through inductive coupling.
Use the recommended cables (see chapter "Connecting to power
supply") and tighten the cable gland.
You can give your instrument additional protection against moisture
penetration by leading the connection cable downward in front of the
cable entry. Rain and condensation water can thus drain off. This ap-
plies mainly to outdoor mounting as well as installation in areas where
high humidity is expected (e.g. through cleaning processes) or on
cooled or heated vessels.
Fig. 4: Measures against moisture penetration
The process fitting must be sealed if there is gauge or low pressure in
the vessel. Before use, check if the seal material is resistant against
the measured product and the process temperature.
The max. permissible pressure is specified in chapter "Technical
data" or on the type label of the sensor.
4.2 Mounting instructions
If the instrument is mounted in the filling stream, unwanted false
measurement signals can be generated. For this reason, mount the
Suitability for the process
conditions
Installation position
Welding work
Moisture
Pressure/Vacuum
Inflowing medium