Bruker BioSpin NMR BVT3200, Техническое руководство

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22 (55) BRUKER BIOSPIN Technical Manual Version 002
BCU05 gas cooler 2.4
The BCU05 is a device that cools dry air or nitrogen gas. The device has a
refrigerant gas circuit with a compressor, an evaporator and a cooler. The gas is
cooled as it circulates along the evaporator which is located inside the isolated
transfer line that connects the BCU05 to the magnet. At the outlet of the transfer
line the gas temperature may reach - 40 °C.
The BCU05 has a cable that must be plugged in the connector marked BCU05.
When the probe heater is
ON a signal is delivered to turn on the compressor of
the BCU05. This security avoids freezing of the the sample when the BVT3200
power is off.
Figure 2.6. BCU05 principle
BCU05
DRY GAS INPUT FLEXIBLE TRANSFER LINE
TO MAGNET
GAS COMPRESSOR
COLD GAS OUTPUT
TO VARIABLE
TEMPERATURE UNIT
BVT3200