11
3 Mounting
MINITRAC 31 • Foundation Fieldbus
62076-EN-190704
You can find detailed information on the materials and process condi-
tions in chapter "
Technical data
" as well as on the type label.
Metric threads
In the case of instrument housings with metric thread, the cable
glands are screwed in at the factory. They are sealed with plastic
plugs as transport protection.
You have to remove these plugs before electrical connection.
NPT thread
In the case of instrument housings with self-sealing NPT threads, it is
not possible to have the cable entries screwed in at the factory. The
free openings for the cable glands are therefore covered with red dust
protection caps as transport protection.
Prior to setup you have to replace these protective caps with ap-
proved cable glands or close the openings with suitable blind plugs.
The suitable cable glands and blind plugs come with the instrument.
3.2 Mounting instructions
Note:
During the planning, our specialists will analyse the conditions of the
measurement loop to dimension the 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 in this "Source Sizing" document in
addition to the following mounting instructions.
The following mounting information is applicable as long as there is
nothing else specified in the "Source Sizing" document.
You can find 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 filled. Mainly in horizon-
tally arranged tube measuring distances, air bubbles or buildup in
the tube can influence the measuring result. Measurement should be
preferably through the centre of the tube.
Cable glands
Installation position
