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ID: 182463115
Planning details
It is the responsibility of the system owner to decide on the usage of this feature and to realize
the connection between the BMU and the central alarm system of the building.
6.7
Cable lengths and routing
All connections between the cabinets in the technical room and the MR system in the magnet
room and/or in the operating area are made via the external cable set. The external cable set
contains electricity cables, lines for cryogenic gases, and refrigeration lines.
Detailed planning of cable lengths and compliance to these plans during the final installation is
a basic prerequisite for smooth installation of an MR system.
The relocation of the external line set is subject to specifications relating to:
▪
Compliance with the maximum cable lengths between components in the technical room
and the magnet cabinet (CCM) as well as the operating area.
▪
Compliance with the minimum bending radii of the different cables
▪
Cable routing with strain relief on cable trays at ceiling height
Cable routing with minimum distances is an advantage and should be strived for in every case.
The available RF power for MR signal excitation compared to the nominal output power of the
RF transmitter is reduced when long distances are used. Other than this, no further constraints
should be expected. The lengths of the cryogenic transfer line between the cryo-platform and
the MR CryoProbe™ has a strong influence on the signal to noise ratio of the CryoProbe and
must be minimized in every case by direct line routes. See chapter
Alarm type
Pin
Alarm states
Normally closed Pin 1 and 2 Contact closed in normal operating state, open during alarm
Normally open
Pin 3 and 4 Contact open in normal operating state, closed during alarm
The local project leader must immediately notify Bruker BioSpin MRI of any change to the cable
lengths required during the planning stage. Changes to construction of the installation, which
only become known during installation of the system, lead to enormous time delays.
Содержание BioSpec 117 AVANCE III
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