By hvhipot 
The current single-arm bridge is also known as the Wheatstone bridge. Its principle is to compare the measured resistance value with the known resistance value, and get the result. When measuring small resistance, the resistance head that has no connection point is contacted to the measuring tape. Here comes the error. When measuring with a single-arm bridge, the measured resistance, the resistance of the connecting wire, and the contact resistance are connected to one arm of the bridge. If the value of the former is equal to or smaller than the latter, the measured result is unbelievable.
Performance characteristics:
1. Fast test speed: The maximum output charging current of this instrument can reach 2A, which can effectively compensate the current inertia of large inductance equipment during measurement, accelerate the saturation of the iron core, thus shorten the charging time and increase the test speed. It is simpler than traditional instruments. The double-arm bridge is hundreds of times faster.
2. High accuracy: In addition to the advanced fHV Hipot Electric Co., Ltd.-terminal measurement method, this instrument also uses advanced constant current power supply technology to keep the charging current of the inductive load at a relatively stable value, with stable anti-inductance and anti-interference ability Strong, thereby ensuring the accuracy of the measurement. In addition, high-quality components imported from abroad are used, and the measurement results are highly accurate and repeatable.
3. Wide measuring range: The resistance measuring range is 1μΩ～2KΩ, and the measuring range is wide.
4. AC and DC dual purpose: This instrument is equipped with a rechargeable battery pack, AC and DC power supply, portable design, easy to use and carry.