Bruker AVANCE, User Manual

Page: 59 / 110

Utility Requirements
H157655_1_008 59
8.2 Telecommunication
Please refer to the AVANCE NMR layout in chapter Floor Plan [
}
73] . The following ports/
connections are required:
• Telephone/data ports behind the workstation.
• Ethernet cable between the AVANCE cabinet and the workstation.
8.3 Compressed Gas
Some components of the AVANCE system and the vibration isolators, which are integrated
into the magnet legs, operate with compressed gas.
8.3.1 General Requirements
Compressed gas line : The standard AVANCE system requires one compressed gas line
with at least two regulated outputs.
Regulators : Each output should terminate with a regulator (including gage head) suited for a
pressure range of 0 - 8.6 bar (0 - 125 psi). The output of the regulator should allow the quick
connect for an 8 mm diameter gas tube..
• Compressed nitrogen gas needed for temperature control with VT experiments in order to
achieve optimal NMR performance. For example, the BCU-I cooling unit requires a dew
point of -51°C (-60°F) for the compressed gas.
• Compressed air or nitrogen gas for spinning.
• Compressed air or nitrogen gas for sample ejection, and for the magnet’s vibration
isolation units.
• Compressed air or nitrogen gas for the optional CryoProbe system.
8.3.2 Gas Supply
The gas supply used depends on the frequency of the system:
• 400 MHz: Compressed air
• 500 MHz: Nitrogen gas with >95% purity.
• 600-800 MHz: Nitrogen gas with >96% purity.
Notes:
• A nitrogen separator (offered by Bruker as an option) can be built into the AVANCE
cabinet as an available solution. This will produce the nitrogen gas required for VT work.
However, this is not suitable for larger flow rates required by MAS experiments.
The nitrogen separator is suitable for use with the BCU-I cooling unit. However the
nitrogen output from the separator is not pure enough and this unit should not be used
with a N2 exchanger or BCU-II cooling unit for low temperature work.
• If a CryoCooling unit is to be installed, a secondary regulator, T-split from the supply line is
recommended.
• The Emergency Sample Protection Device is used in conjunction with the CryoProbe
system, and requires a cylinder of air or nitrogen gas.