The well-priced DIAMENTOR Set CM includes a separate electronics, a DIAMENTOR chamber size B, a separate display unit as well as a power supply and extension cable. The miniature DAP meter electronics can be mounted arbitrary e.g. behind the housing of the X-ray installation. For presenting the measuring results, the separate smallsized display can be connected and fixed flexible e.g. next to the control desk. An easy and uncomplicated RIS or PACS connection can be realized straightforward via an optional RS232 interface. Fast calibration and constancy checks can be realized by means of a built-in test function.