YDI type of medical leakage meter is in accordance with the technical requirements of national verification procedures, the development of measurement instruments have a variety of uses. Can be used to detect various types of diagnostic bounce, ECG machines, and other equipment leakage current, in order to ensure the safety of medical devices for human requirements. 1, the main features: (a) instruments to measure patient leakage current (b) chassis leakage current measurement (c) measurement of the earth leakage current of 2, measuring range: 0 ~ 200.0μA; 3, Uncertainty: ≤1 % ± 1 word; 4, differentiate force: 0.1μA;