User guide

14
4 Mounting
MINITRAC 31 • Foundation Fieldbus
41782-EN-131119
4.2 Mounting instructions
Note:
Alongwiththeplanning,ourspecialistswillanalysetheconditionsof
the measurement loop to dimension the radiation source (isotope)
accordingly.
Yougeta"SourceSizing"documentspecifyingtherequiredsource
activity and containing all relevant mounting information for your
measuring point.
Youmustfollowtheinstructionsofthis"SourceSizing"documentin
additiontothefollowingmountinginstructions.
Thefollowingmountinginformationisapplicableaslongasthereis
nothingelsespeciedinthe"SourceSizing"document.
Youcanndinformationonprotectivebarriersandthemounting
of the corresponding source container in the operating instructions
manualofthesourcecontainer,e.g.VEGASOURCE.
You can mount the MINITRAC 31 in any position. If you have ordered
yourinstrumentwithaleadcoverasaprotectionagainstambient
radiation (optionally), the the sensor is shielded laterally against X-ray
radiation. In this case, the radiation can only penetrate frontally.
Fastenthesensorsinsuchawaythattheycannotfalloutofthe
holder.
Direct the exit angle of the source container to the MINITRAC 31.
Mount the source container as close as possible to the vessel. If there
aregaps,securetheareawithasafetyfenceandprotectivegrating
so that no one can reach into the dangerous area.
Caution:
Makesurethatthetubeisalwayscompletelylled.Mainlyinhorizon-
tally arranged tube measuring distances, air bubbles or buildup in
thetubecaninuencethemeasuringresult.Measurementshouldbe
preferably through the centre of the tube.
Installation position