Gas isotopic mass spectrometer MI1201AGM-01M is intended for usage in specific sphere of analytical mass spectrometry  precision analysis of uranium isotopic composition in uranium hexafluoride.The device can be successfully used in process lines and uranium hexafluoride control departments - the entrance check of raw materials passing to, in enrichment process lines, for ready-made product control, in preparation of concentration standards.The main advantages and outstanding features of the unit: mass spectrometer is equipped with five-cup ion collector with secondary electron multiplier. Ion collector is developed for simultaneous registration of the main uranium isotopes: 234, 235, 236 and 238 (masses 329, 330, 331 and 333 correspondingly); inlet system has four channels for connection of standard samples and two flowing channels for connection into the process line or for analyses from samplers; mass-spectrometer is equipped with industrial computer, control of intelligent electronic modules and devices is provided by bus CAN. Mass spectrometer possesses heightened noise immunity; mass-spectrometer adjustment, alignment and measurement via LAN can be carried out in the remote access mode.