12
4 Mounting
VEGACAL 69 • Two-wire 4 … 20 mA/HART
31178-EN-200929
4 Mounting
4.1 General instructions
Note:
For safety reasons, the instrument must only be operated within the
permissible process conditions. You can find detailed information on
the process conditions in chapter "
Technical data
" of the operating
instructions or on the type label.
Hence make sure before mounting that all parts of the instrument ex-
posed to the process are suitable for the existing process conditions.
These are mainly:
•
Active measuring component
•
Process fitting
•
Process seal
Process conditions in particular are:
•
Process pressure
•
Process temperature
•
Chemical properties of the medium
•
Abrasion and mechanical influences
Select an installation position you can easily reach for mounting and
connecting as well as later retrofitting of a display and adjustment
module. The housing can be rotated by 330° without the use of any
tools. You can also install the display and adjustment module in four
different positions (each displaced by 90°).
Devices with threaded fitting are screwed into the process fitting with
a suitable wrench via the hexagon.
See chapter "
Dimensions
" for wrench size.
Warning:
The housing or the electrical connection may not be used for screw-
ing in! Depending on the device version, tightening can cause dam-
age, e. g. to the rotation mechanism of the housing.
Before beginning the welding work, remove the electronics module
from the sensor. By doing this, you avoid damage to the electronics
through inductive coupling.
Ground the probe before welding directly on the rod or cable.
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 gland. Rain and condensation water can thus drain off. This
applies 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.
Process conditions
Installation position
Screwing in
Welding work
Protection against mois-
ture
Summary of Contents for VEGACAL 69
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