Adjusting method, adjusting system and adjusting device for measuring range of pipettor

The invention provides a pipettor measuring range adjusting method, adjusting system and adjusting device. The adjusting method comprises the following steps: S1, determining an adjusting cardinal number R; s2, determining an adjusting direction D; s3, determining a rotating gear G; s4, determining a range adjustment multiple M based on the rotation gear; s5, determining an adjustment step S; s6, calculating a current single range adjustment value; and S7, calculating an accumulated adjustment value of the measuring range. The adjusting system comprises a control assembly, a measuring range adjusting assembly, a rotation interval time determining assembly, a rotation direction determining assembly and a measuring range calculating assembly. The adjusting device comprises a display screen, a main shell, a magnetic code circular ring, a manual rotating piece, a magnetic induction device and a main control board. According to the method, rapid and accurate stepless adjustment can be performed on the measuring ra