A high precision belt weighing device is disclosed, it mainly consists of a first belt weighing scale frame (1), a set of buffer carrier rollers (2), a volume scale hopper (3), a second belt weighing scale frame (4), a transfer conveyor (5), a dispenser (6), an initial point detector (7), a weighing control instrument (8), and a speedometer (11). The set of buffer carrier rollers (2) is provided between the first and second belt weighing scale frames (1,4), and the volume scale hopper (3) is provided above the set of buffer carrier rollers (2), and the transfer conveyor (5) is provided above the volume scale hopper (3). The first and second belt weighing scale frames (1,4), the volume scale hopper (3), the initial point detector (7), the speedometer (11) are connected with the weighing control instrument (8) by cables, the cumulative weight of bulk goods transited by the first belt weighing scale frame (1), the cumulative weight of bulk goods transited by the second belt weighing scale frame (4), the calibrated weight of bulk goods in the volume scale hopper (3), and the belt null point in the length of belt detected by the initial point detector (7) are displayed in the instrument.
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