Device for the nmr analysis of substances in a sample, respiratory gas analysis device, fuel sensor and method

In a device (40) for analysing substances in a sample on the basis of a measurement of nuclear magnetic resonances, the device comprises means (47) for generating a magnetic field. The device (40) is characterized in that, in order to detect magnetic resonances induced in the sample by the generation of the magnetic field, provision is made of at least one magnetic field sensor which comprises at least one sensitive component (45) with diamond structures, wherein the diamond structures have nitrogen vacancy centres. 在种用于基于测量核磁共振来分析在试样中的物质的设备（40）中，所述设备包括用于产生磁场的器件（47）。所述设备（40）的特征在于，为了侦测磁共振设置有至少个磁场传感器，该磁共振通过在试样中产生所述磁场被感应，所述磁场传感器包括带有钻石结构的至少个敏感的组件（45），其中，所述钻石结构具有氮空位中心。