Instructions For Oxygen And Ultra-Pure Gas Applications - Vega VEGADIF 65 Operating Instructions Manual

Effective pressure
transmitter
Effective pressure lines
Vibrations
Temperature limits
Oxygen applications
Pure gas applications
VEGADIF 65 • Foundation Fieldbus
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.
You will find general recommendations for the installation of effective
pressure lines in DIN 19210 "Effective pressure lines for flow systems"
or the corresponding national or international standards. When
installing effective pressure lines outdoors, consider applying suitable
anti-freeze protection, e.g. tube heating. Install effective pressure lines
with a monotonic downward slope of at least 10 %.
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
temperatures 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 and ultra-pure gas
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 instruments
l
must be cleaned according to the requirements of BAM
(DIN 19247)
Depending on the seal material, certain temperatures and
l
pressures 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 "O₂" will be visible on the process fitting. Penetration of oil,
grease and dirt should be avoided. Danger of explosion!
We also offer oil and grease free instruments for special applications
such as e.g. ultra-pure gas. There are no special restrictions with
respect to the process conditions.
4 Mounting
17