This paper introduces a non-physical calibration method of large weighing tank.Using the liquid pres-sure source which can automatically and stably load according to the set load and the traceable standard sensor as the reference standard,the full range and full performance calibration of the weighing module of the tank is carried out in the gantry reaction device.The results show that the method can guarantee the accuracy of the large range weighing tank,and has the advantages of high efficiency and good safety.
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