When Shanghai Haikang ja4 102 electronic balance is calibrated, first check whether there is a built-in weight. If so, the electronic balance can perform self-inspection. During the self-inspection, the balance shows CAL, 0, and flashes 100 after a while. At this time, the built-in 100g weight of the balance is gently pushed in, and the balance starts self-calibration. After a while, 100.0000 is displayed, and then 0 is displayed. At this time, the built-in 100g weight is pulled back, and the balance shows 00.0000 in an instant. At this time, the self-check of the electronic scale is completed and it can be used normally. I hope my answer can solve your problem!

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