Direct Reading Spectrometer is the main analysis and determination calibration instrument of steel industry. Traditional Direct Reading Spectrometer not only big and weight but also need high condition. By using Linear Array CCD as Spectrometer detector, the receive mode of the ray is different., the structure and the of Instrumentation has changed: the room of the light is greatly reduced, not need vacuum air pump, and can accept the all Spectra. To make the Spectra instrumentation develops to smal...