测量时，选用万用表电阻档的适当量程，将两表笔分别接在电位器两个固定引脚焊片之间，先测量电位器的总阻值是否与标称阻值相同。若测得的阻值为无穷大或较标称阻值大，则说明该电位器已开路或变值损坏。
       When measuring, using multimeter resistance profile of the appropriate range, the two probes are respectively connected with a potentiometer two fixed pin lug, to measuring potentiometer total resistance with the same nominal value. If the measured resistance is infinite or a nominal resistance is large, then the potentiometer has been open or variable damage.
       整个旋转过程中，表针应平稳变化，而不应有任何跳动现象。若在调节电阻值的过程中，表针有跳动现象，则说明该电位器存在接触不良的故障。 直滑式电位器的检测方法与此相同。
     The entire rotating process, hands should be steady change, and should not have any beat phenomenon. If in the regulation of the resistance value of the process, hand beating phenomenon, the existence of the fault of bad contact potentiometer. Direct sliding type potentiometer detection method with the same.
     然后再将两表毛分别接电位器中心头与两个固定端中的任一端，慢慢转动电位器手柄，使其从一个极端位置旋转至另一个极端位置，正常的电位器，万用表表针指示的电阻值应从标称阻值
    Then the two coat are respectively connected with the potentiometer center head and the two fixed terminal at either end, slowly turn the potentiometer handle, make it from one extreme position is rotated to another extreme position, normal potentiometer, multimeter hands instructions from the nominal resistance value of the resistance ( or0 Ω) continuous changes to0 Ω( or nominal value ).