| 摘要 |
A portable defensive AC impedance data logging device is used for measuring the AC impedance. The portable defensive AC impedance data logging device disclosed in the present invention can display not only a traditional measured result but also a comparison result derived from the measured result and preset limit values for further producing a “near-fail” preventive result. A set of informative logging data, such as location code and date and time when the measurement is performed, is automatically added into each measured record that can be stored paperlessly in device memory for quick check. The device further combines a portable mass data storage technique to provide an unlimited automatic data storage space for convenient transporting of the measured records to other sophisticated data processing system such as personal computers. |
