VEGA VEGADIF 65 4 … 20 mA - Manual (Page 15)

15
4 Mounting
VEGADIF 65 • 4 … 20 mA
36236-EN-130417
4 Mounting
4.1 General instructions to use the instrument
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.
Use the recommended cables (see chapter "Connecting to power
supply") and tighten the cable gland.
You can give the 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.
The ventilation for the electronics housing is realised via a filter ele-
ment in the vicinity of the cable glands.
2
1
2
1
2
1
1
2
Fig. 10: Position of the filter element with single and double chamber housing
1 Filter element for ventilation of the electronics housing
2 Blind plug
Information:
Make sure that the filter element is always free of buildup during
operation. A high-pressure cleaner may not be used for cleaning.
DP flow elements are calculated for certain pipeline and operating
data. Therefore, check the pipeline data before installation at the
measuring point and compare the measurement loop number.
Suitability for the process
conditions
Moisture
Ventilation
Effective pressure trans-
mitter