Vega VEGADIF 85 - Oxygen Application and Process Connection

15
4 Mounting
VEGADIF 85 • Modbus and Levelmaster protocol
53571-EN-230814
4.2 Instructions for oxygen applications
Warning:
Asanoxidisingagent,oxygencancauseorintensifyres.Oils,
grease, some plastics and dirt can burn explosively on contact with
oxygen. There is a risk of serious personal injury or damage to prop-
erty.
Therefore, to avoid this, take the following precautions, for example:
•
All components of the system - measuring instruments - must
be cleaned in accordance with the requirements of recognized
regulations or standards
•
Depending on the seal material, certain temperatures and pres-
sures must not be exceeded in oxygen applications, see chapter "
Technical data"
•
Devices for oxygen applications may only be unpacked from the
PE foil just before assembly.
•
Checkwhetherthemarking"O2"isvisibleontheprocesstting
afterremovingtheprotectionfortheprocesstting
•
Avoid any ingress of oil, grease and dirt
4.3 Connection to the process
DPowelementsareinstallationsinpipelineswhichgeneratea
ow-dependentpressuredrop.Theowrateismeasuredviathisdif-
ferentialpressure.TypicalDPowelementsareVenturitubes,orice
plates or impact pressure probes.
InstructionsformountingtheDPowelementsarestatedintheap-
propriate standards as well as in the documentation from the respec-
tive manufacturer.
Eectivepressurelinesarepipelineswithasmalldiameter.Theyare
usedtoconnectthedierentialpressuretransmittertothepressure
tappingpointortheDPowelement.
Principles
Eectivepressurelinesforgasesmustalwaysremaincompletelydry
andnocondensatemustcollect.Eectivepressurelinesforliquids
mustalwaysbecompletelylledandmustnotcontainanygasbub-
bles. Therefore, suitable venting systems must be provided for liquids
and suitable drainage systems for gases.
Wiring
Eectivepressurelinesmustalwaysrunwithasucient,strictlymo-
notonousslope/gradientofatleast2%,butbetterupto10%.
Recommendationsforwiringofeectivepressurelinesarestatedin
the corresponding national and international standards.
Connection
Eectivepressurelinesareconnectedtothedeviceviastandardcut-
ting ring screw connections with suitable thread.
DPowelement
Eectivepressurelines