Instructions For Oxygen Applications; Mounting And Connection Instructions - Vega VEGADIF 65 Operating Instructions Manual

DP flow element
Effective pressure lines
Vibrations
Temperature limits
Oxygen applications
Connection plus/minus
side
VEGADIF 65 • 4 ... 20 mA
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.
Detailed instructions for mounting the DP flow element are stated in
DIN EN ISO 5167 as well as in the instrument documentation from the
respective manufacturer.
When wiring the effective pressure lines outdoors, make sure that
you use a suitable antifreeze, e.g. by using a heat tracing. Wire the
effective pressure lines with a monotonous gradient of at least 10 %.
Effective pressure lines for gases must remain dry, condensate must
be avoided. Effective pressure lines for liquids must be completely
filled and ventilated.
General recommendations for wiring of effective pressure lines are
stated in the corresponding national and international standards.
In case of strong vibrations at the application position, the instrument
version with external electronics should be used.
Higher process temperatures often mean also higher ambient tem-
peratures for electronics and connection cable. Make sure that the
upper temperature limits stated in chapter "Technical data" for the
environment of the electronics housing and connection cable are not
exceeded.
4.2

Instructions for oxygen applications

Oxygen and other gases can be explosive when brought into contact
with oils, grease and plastics, so the following measures must also be
taken:
•
All components of the plant, such as e.g. measuring instru-
ments must be cleaned according to the requirements of BAM
(DIN 19247)
•
Depending on the seal material, certain temperatures and pres-
sures must not be exceeded in oxygen applications, see chapter
"Technical data"
Danger:
Instruments for oxygen applications must be unpacked just before
mounting. After removing the protective cover of the process fitting,
the label "O " will be visible on the process fitting. Penetration of oil,
2
grease and dirt should be avoided. Danger of explosion!
4.3

Mounting and connection instructions

When connecting the VEGADIF 65 to the measurement loop, take
note of the plus/minus side of the process component. The plus side
is marked with a "+", the minus side with a "-" on the process compo-
nent next to the oval flanges.
4 Mounting
17