| 摘要 |
A portable apparatus for analysing a sample by the X-ray fluorescence includes a hand-held probe connected to an electronic unit. The probe includes a radiation source (45) for irradiating the sample, a plurality of filters (52), and a radiation detector (53) responsive to the X-ray radiation from the sample for generating a plurality of sample signals representing the elements in the sample. The probe and the electronic unit each include a universal asynchronous receiver transmitter for transmitting the sample signals from the probe to the electronic unit. The electronic unit includes random access memories for storing the sample signals and a library of groups of signals representing the elements of known materials. A keyboard (62) is provided for adding signals to the library and/or storing the sample signals in the library. A microprocessor (CPU) and associated circuitry compare the sample signals with the stored groups of signals and generate an identification signal if a match is found. A liquid crystal display (61) and driving circuitry generate an indication of the identity of the material sample. Additionally, the apparatus is capable of performing elemental analysis of a given alloy sample. <IMAGE> |
