HIOKI DT4252 Digital Multimeter | 10 A direct input, true RMS, DCV ±0.3%, CAT IV 600 V / CAT III 1000 V

HIOKI DT4252 Digital Multimeter (Japan): 10A Direct Input, ±0.3% Accuracy and True RMS

Overview

The HIOKI DT4252 is a high-end digital multimeter designed for power maintenance and industrial servicing. It offers a DCV basic accuracy of ±0.3% and a wide frequency characteristic (40Hz to 1kHz) for stable readings in a variety of complex circuits. A key feature is its dedicated 10A high-current input terminal, allowing direct high-current measurement without a clamp meter. With true RMS measurement, it accurately analyzes the power condition of inverter equipment affected by distorted waveforms, making it standard equipment for automated production lines, electromechanical maintenance and R&D laboratories.

Key Specifications

Industrial Measurement Performance

• True RMS measurement: Accurately measures non-sinusoidal signals, providing accurate readings even in inverter systems or switching power supplies with heavy harmonic interference.
• 10A direct current input: A dedicated current terminal accepts AC/DC current up to 10A directly for checking the load current of power equipment.
• Fast display and bar graph: High sampling rate and fast reading updates, with an analog bar graph for intuitive observation of signal changes.

Assistive and Protective Design

• Low-pass filter (LPF): Filters out switching noise and high-frequency interference generated by inverters, keeping only the fundamental component for more accurate voltage measurement at inverter outputs.
• Rugged drop-resistant design: Passes a drop test from 1 m onto concrete; the robust shock-resistant housing is built for demanding job sites.
• CAT IV 600V / CAT III 1000V safety rating: Suitable for work on high-energy circuits such as service entrances and distribution panels.

Ease of Use

• High-contrast display with backlight: Large digits and a backlight for clear reading even in dark electrical rooms or ceiling spaces.
• PC connection (optional): Supports real-time data transfer to a PC via a USB adapter set for long-term monitoring, recording and analysis.

Applications

• Automated production line maintenance: PLC control circuit checks, motor drive diagnostics.
• Electromechanical acceptance testing: Inspection of power systems in new buildings, distribution panel function verification.
• R&D and QA testing: Power circuit design verification, electronic component characterization.