HIOKI RM3546 - High-precision DC resistance meter optimized for weld resistance inspection
€3,388.00
Shipping costs : €9.90 (Standard)
In stock in Germany
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€3,388.00
Product information HIOKI RM3546 - High-precision DC resistance meter optimized for weld resistance inspection
Key Specifications
- Resistance ranges: 1 mΩ to 1000 MΩ (13 ranges)
- Active Circuit Protection: DC 60 V
- Path resistance tolerance: up to 9 Ω (PR mode, 500 mA)
- Maximum test current: 1 A DC
- Multiplexer option with Z3003 for up to 20 measurement channels (4-wire mode)
Typical Applications
- Automated battery cell tab weld resistance inspection
- Busbar weld resistance inspection in battery modules
- Manual resistance measurement of battery module connections
- Automated multi-point resistance measurement using Z3003 multiplexer option
Detailed Product Overview
The RM3546 is a DC resistance meter optimized for weld resistance inspection on battery cells and modules. It supports stable micro-ohm measurements performed shortly after welding, while the joint is still cooling down and resistance values are affected by temperature changes, extended wiring and multiple contact interfaces along the measurement path. The instrument also incorporates Active Circuit Protection up to DC 60 V for safe manual resistance measurements during battery module service.Measurement stability with long cable runs
In automated test systems, the resistance meter is often installed at a distance from the measurement point. This can result from cabinet layouts, space constraints or environmental separation between the instrument and the test location. As a result, measurement setups frequently involve long cable runs and additional series elements in the measurement path.Temperature effects after welding
After welding, the electrical resistance of a joint varies with temperature during the cooling phase, which can complicate the evaluation of measurement results even when the weld quality itself remains unchanged. In practice, this either requires waiting for complete cooling before measurement or incorporating the temperature at the weld location into the resistance evaluation, which in turn requires a reliable and reproducible temperature-related reference at the time of measurement.Measurement integrity and system integration
To further support reliable low-resistance measurements under thermally and electrically unstable conditions, the RM3546 provides Advanced Offset Voltage Compensation (A-OVC). By applying the measurement current with alternating polarity and averaging the results, thermoelectric and internal offset voltages are suppressed. This enhances measurement stability under conditions such as those occurring shortly after welding. In addition, a contact-check function detects insufficient probe contact and helps reduce measurement errors caused by poor electrical connections.Expandable multiplexer configuration
Two optional Z3003 Multiplexer Cards can be installed in the RM3546, each providing 10 measurement channels in 4-wire mode. When two cards are fitted, the instrument can measure up to 20 channels automatically in sequence, enabling resistance evaluation of multiple DUTs without manual reconnection. Installation requires only a Phillips screwdriver and takes about two minutes.Battery contact measurements during service
In service applications, resistance measurements on battery contacts and interconnections are typically performed manually using conventional test leads. In manual measurements, one probe may contact a busbar carrying voltage while the other probe unintentionally touches the enclosure or ground. Without an appropriate protection function, such situations can result in damage to the resistance meter.- RM3546 Resistance Meter
- Power cord
- Temperature sensor Z2001
- Male EXT I/O connector
- EXT. I/O connector cover
- Start-up guide
- Operating Precautions
Dimensions & Packaging
| Length | 307 mm |
|---|---|
| Width | 215 mm |
| Height | 80 mm |
| Weight | 3.5 kg |
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RM3545A, RM3546 Measurement Lead Selection Guide (English)1,015 KB pdf
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Instruction Manual, RESISTANCE METER RM3545A, RM3546 (English)8,158 KB pdf
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Instruction Manual, RESISTANCE METER RM3545A, RM3546 (Spanish)7,817 KB pdf
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Product Catalog, Measuring Instruments for the Battery Industry (English)6,753 KB pdf
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Datasheet, Resistance Meter RM3545A, RM3546 (English)1,971 KB pdf
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Product brochure with datasheet, RESISTANCE METER RM3546 (English)4,089 KB pdf
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Flyer Lithium-ion Battery Production and Testing (English)1,699 KB pdf
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