A detector arrangement to be scaled or adapted in a simple manner depending on the application includes n·m (n≥2, m≥2) thermal conductivity detectors that are each arranged in a mounting on a detector block having a high thermal conductivity, wherein each case m detector block is secured radially symmetrically and spaced apart from one another on a carrier having a central opening, forming a detector module, and n detector modules are located on a common axis by the central openings of the carriers.