Original Japan HIOKI RM3546 High Precision Nano-Ohm Resistormeter, 1nΩ Resolution Low Resistance Tester For EV Busbar Welding Inspection

The HIOKI RM3546 is a new-generation nano-ohm level resistance meter designed for EV and energy storage battery manufacturing. It solves unstable measurement issues caused by temperature drift right after welding via built-in A-TC temperature compensation function.

With 1nΩ minimum resolution and high measurement accuracy, it accurately judges welding quality by tiny resistance differences. Equipped with ACP active circuit protection up to DC60V to avoid equipment damage from abnormal voltage on production lines. It supports Z3003 multiplexer for multi-channel expansion, compatible with LAN/USB/RS232/EXT I/O interfaces for seamless linkage with automated production equipment.

1. 1nΩ ultra-high resolution, accurate micro-resistance detection for welding spots
2. A-TC temperature correction, stable reading under rapid temperature change after welding
3. ACP active 60V overvoltage protection, prevent instrument breakdown on production line
4. Max 9Ω allowable cable path resistance, flexible production line wiring layout
5. Contact detection function, eliminate misjudgment caused by poor probe contact
6. Optional Z3003 multiplexer for multi-channel batch testing
7. Rich communication ports: LAN, USB, RS232, EXT I/O for automation integration
8. Zero-adjustment-free design, ready for precise measurement right after startup

EV battery busbar welding quality inspection, energy storage module connection test, motor winding resistance measurement, new energy production line automated resistance screening, metal welding spot consistency testing.