HIOKI RM3546 Resistance Meter
New Standard in Weld Resistance Inspection
OVERVIEW
In addition to the industry‘s highest level of resistance measurement accuracy, the Advanced Temperature Compensation (A-TC) function ensures that minute changes in resistance are quantified. Even in environments where temperatures change rapidly, such as immediately after welding, the system accurately detects slight differences in welding quality, contributing to the early detection of potential defective products. Furthermore, a new function has been added that instantly activates the protection circuit and shuts down the circuit when an over-input is detected. This reduces the risk of failure and prevents production line downtime. In addition, for production line system construction, support for "maximum allowable path resistance of 9Ω" and the provision of a dedicated probe kit support stable operation over the long term and seamless system construction.
Product Introduction Video
EVs (electric vehicles) and ESSs (energy storage systems) that support social infrastructure: The explosive growth of the battery market is creating unprecedentedly high-level demands such as design battery lifespans of over 20 years, ultra-fast charging, and high safety. To achieve the development and production of safer batteries, Hioki has developed the RM3546, which can perform high-precision inspections on welded areas where large currents flow.
Key Features
- Low-Resistance Measurement Optimized for Welding Quality Inspection in Battery Pack/Module Manufacturing Lines.
- Ultra-high precision measurement with 1 nΩ resolution to detect small changes in weld quality.
- Active Circuit Protection (up to DC 60 V) safeguards the measuring instrument from miswiring and incorrect contact.
- The A-TC function enables stable measurement even immediately after welding when temperatures are high, contributing to reduced takt time.
- The A-OVC function ensures measurement stability even in environments with large temperature variations.
- Increased Freedom in Cable Extension and Equipment Layout thanks to a maximum path resistance tolerance of 9Ω.**Conditions: PR1000 µΩ, 500 mA, SOURCE B–SOURCE A
Model No. (Order Code)
Measurement probe is not included with the unit, purchase separately if required.
FEATURES
Measure low resistance values at high precision and high, 1 nΩ resolution
Current passes through the measurement target, such as the welded area, to measure electrical resistance. Good and defective products are sorted based on differences in resistance values. Weld resistance is as low as 10 µΩ to 100 µΩ. The RM3546 resistance meter is equipped with a 1000 µΩ range and can measure low resistance with high precision at 1 nΩ resolution. If the weld is insufficient, the resistance value becomes larger than in good products. By detecting slight differences in resistance between good and defective products, it determines pass/fail. All weld quality can be managed numerically on the production line, ensuring traceability.
Measures Low Resistance with High Precision Using Temperature Noise Compensation
A-OVC function for stable measurement (Advanced Offset Voltage Compensation)
The RM3546 is equipped with an A-OVC function that automatically compensates for thermoelectric power, offset voltage inside the instrument, etc., to make measurement errors as close to zero as possible. It suppresses variations in measured values and enables measurements that maximize the performance of its 1 nΩ resolution.
A-TC function compensates for temperature effects (Advanced Temperature Correction)
There is a correlation between resistance values and temperature. The RM3546 is equipped with the A-TC function that simultaneously measures the temperature and resistance value of the measurement target and compensates it in real time to the resistance value at a reference temperature. Even immediately after welding (when the temperature changes rapidly), it compensates to the resistance value at room temperature for accurate pass/fail judgement.
Malaysia
