LR8431-20 Memory HiLogger

• 4.3'' colour LCD display
• pair of USB interfaces for connection to PC and for USB flash drive
• battery or mains power supply
• memory cards up to 2 GB capacity
• up to 5 units can be connected
• Logger Utility software for PC control

Detailed Product Overview

The HIOKI LR8431 Data Logger is a compact, high-performance instrument designed for accurate and efficient multi-channel data acquisition. It offers 10 isolated analog channels and 4 pulse channels, enabling comprehensive monitoring across a wide range of parameters. With a rapid 10 ms recording interval, it is well suited for capturing fast-changing signals. The smallest voltage resolution of 5 µV and five selectable direct voltage ranges from 100 mV to 60 VDC provide the flexibility needed for diverse industrial measurement tasks.

The instrument supports several power supply options for maximum convenience. It includes an AC adapter compatible with 100 to 240 V AC mains. For portable use, the logger can be powered by an optional battery pack, providing up to 2.5 hours of continuous operation. For extended field measurements or in-vehicle use, the LR8431 also accepts a wide-range DC power supply from 10 to 16 V DC, ensuring stable operation in demanding environments.

Analog voltage inputs and various types of thermocouples are connected via M3 screw terminals. The logger features a 16-bit delta-sigma A/D converter combined with HIOKI’s proprietary digital filtering technology to effectively suppress noise, including inverter switching interference and line-frequency hum. This allows the LR8431 to maintain high accuracy even in electrically noisy locations such as production plants or automotive test environments.

The LR8431 supports multiple storage media with capacities of up to 16 GB, enabling long-duration, uninterrupted logging. Its integrated software tools streamline data analysis and reporting, making workflows more efficient. With its portability, noise-resistant design, and wide range of measurement capabilities, the LR8431 is a valuable solution for applications including automotive testing, electronics development, and HVAC performance evaluation.