Patent ID: 11933867
Assignee: BRUKER SWITZERLAND AG
Field: Measurement (Instruments)
Classification: CPC G | IPC G

Claim 0:
1. A method for controlling temperature of a nuclear-magnetic-resonance (NMR) sample tube comprising:
providing a temperature control device in which, around an interior delimited in a radially outward direction by a cylindrical wall, a plurality of flow channels for a temperature-controlling fluid running radially around the interior are formed for receiving the NMR sample tube, of which a radially outermost one of the flow channels is delimited by an axial wall and a radially innermost one of the flow channels is delimited by a further axial wall, each to the radially outward direction, wherein adjacent ones of the flow channels are each connected to one another by a first fluid passage at one axial end with the radially innermost flow channel, wherein the radially innermost flow channel comprises a second fluid passage to the interior, wherein the radially outermost flow channel comprises a fluid inlet at one axial end, and wherein the temperature-controlling fluid is guided through the flow channels, and
during operation of the temperature control device, temperature controlling the cylindrical wall delimiting the interior in the radially outward direction with the temperature-controlling fluid such that the following relation in absolute values applies to the temperature TW of the cylindrical wall and the temperature TFD of the temperature-controlling fluid at the first fluid passage in relation to the ambient temperature TU radially outside the axial wall delimiting the radially outermost flow channel in the radially outward direction:

abs(TU-TW)≤abs(TU-TFD).