Multi-point correction method for Fisher particle size analyzer

The invention discloses a multi-point correction method for a Fisher particle size analyzer. The method comprises the following steps of: measuring the height of a water column by using two or more high and low standard substances, adjusting a C value of an instrument needle valve to enable the ratio K of F values of two standard samples to reach a preset standard value, and enabling the water column heights of the two standard samples to reach a preset standard value by adjusting the water level height P value of the pressure stabilizing pipe, so that correction of the detection equipment is completed. The main technical point of the method is to consider the air pressure loss of instruments, that is, the pre-tube pressure of each instrument is different, and the instrument constant is adjusted by combining a needle valve, so that the purpose of adjusting the instrument system is finally achieved. 本发明公开了一种费氏粒度仪多点校正方法，所述校正方法是利用两个或两个以上高低值标准物质，测量其水柱高度，通过调整仪器针阀C值，使得两个标准样品的F值的比值K达到预先设定的标准值，再通过调整稳压管水位高度P值使得两个标准样品的