Hioki Digital Multimeter DT4282 – High-Precision 60,000-Count True RMS Industrial Tester

The Hioki Digital Multimeter DT4282 is a top-tier, high-precision $60,000\text{-count}$ digital multimeter engineered in Japan by Hioki for advanced R&D laboratories, industrial electronics maintenance, and power system testing. Delivering exceptional speed and accuracy, the Hioki Digital Multimeter DT4282 features a $\pm0.025\%\ \text{DC V}$ basic accuracy rating along with a wide $20\text{ Hz to }100\text{ kHz}\ \text{AC V}$ frequency response range.

As illustrated in the product image, the instrument features a dual-line $5\text{-digit}$ LCD screen with a bright backlight, red over-input warning backlight, and a quick-response analog bar graph. Built for demanding industrial safety standards, it incorporates automatic mechanical terminal shutters linked to the rotary function dial. These physical barriers close unused jack ports to prevent incorrect test lead insertion and accidental short circuits during measurement tasks.

Key Features of the Hioki Digital Multimeter DT4282

$\pm0.025\%$ Basic DC Accuracy: Provides laboratory-grade voltage measurement precision with a fast sampling speed.
Safety Terminal Shutters: Mechanical interlocks cover unused current terminals ( $10\text{ A}$ or $\mu\text{A/mA}$ ) based on the selector knob position to prevent dangerous miswiring.
True RMS & Wide Frequency Response: Accurately evaluates complex non-sinusoidal AC signals and harmonics up to $100\text{ kHz}$ .
Low-Pass Filter (LPF) Function: Includes a $630\text{ Hz}$ cut-off filter to strip out high-frequency noise and inverter harmonics when measuring variable-frequency drives (VFDs).
Direct 10 A Current Inputs: Measures direct AC and DC currents up to $10\text{ A}$ alongside microamp ( $\mu\text{A}$ ) ranges for sensor loop testing.
Dual Display Capability: Concurrently displays primary and secondary parameters, such as voltage and frequency or AC and DC components.
Internal Memory & USB PC Interface: Stores up to $400$ measurement logs internally and supports optional USB PC connectivity (DT4900-01) for automated data logging.

Common Applications and Industrial Usage of

The resolution and safety ratings of the Hioki Digital Multimeter DT4282 satisfy demanding commercial and research environments:

Inverter & Motor Drive Troubleshooting: Filters out carrier noise to measure the true fundamental output frequency and voltage on VFD motor controllers.
Research & Product Development (R&D): Measures small currents, high resistances (up to $600\text{ M}\Omega$ ), and conductance ( $600\text{ nS}$ ) in electronic prototypes.
Facility Maintenance & Industrial Switchgear: Performs CAT IV $600\text{ V}$ and CAT III $1000\text{ V}$ safety-compliant power audits across high-energy distribution networks.
Process Loop & Sensor Calibrations: Reads $4\text{ to }20\text{ mA}$ transmitter loops and temperature outputs via K-type thermocouples.

Technical Specifications

The operational limits and physical dimensions of the Hioki Digital Multimeter DT4282 meet rigorous Japanese quality standards:

Parameter Specification	Technical Details & Operational Values
Component Classification	High-Precision Handheld Digital Multimeter
Primary Target Keyword	Hioki Digital Multimeter DT4282
Display Resolution	Dual-line $5\text{-digit}$ LCD, max $60,000\text{ counts}$
DC Voltage Range	$60.000\text{ mV to }1000.0\text{ V}$ ( $\pm0.025\%\ \text{rdg.}\ \pm2\ \text{dgt.}$ )
AC Voltage Range	$60.000\text{ mV to }1000.0\text{ V}$ ( $20\text{ Hz to }100\text{ kHz}$ )
DC/AC Current Range	$600.00\ \mu\text{A to }10.000\text{ A}$ (Direct $10\text{ A}$ input)
Resistance & Conductance	$60.000\ \Omega\text{ to }600.0\text{ M}\Omega$ / Conductance: $600.00\text{ nS}$
Capacitance Range	$1.000\text{ nF to }100.0\text{ mF}$
Frequency Range	$99.999\text{ Hz to }500.00\text{ kHz}$
Temperature Range	$-40.0\text{ °C to }+800.0\text{ °C}$ (Type K Thermocouple)
Safety Ratings	CAT IV $600\text{ V}$ / CAT III $1000\text{ V}$ Compliant
Power & Dimensions	$4 \times \text{AA (LR6)}$ Alkaline Batteries ( $100\text{ hrs}$ ) / $197 \times 93 \times 53\text{ mm}$ ( $650\text{ g}$ )

Operating Guidelines and Safety Practices

Note: The internal terminal shutters physically prevent inserting leads into current sockets while in voltage mode. Do not force the rotary selector without removing the test leads first.

Enable Low-Pass Filter on Inverters: Turn on the $630\text{ Hz}$ LPF when inspecting variable frequency drives to isolate the primary fundamental voltage from high-frequency pulse-width modulation (PWM) noise.

Red Backlight Visual Alert: Pay attention to the screen background—the LCD illuminates bright red during over-input conditions or continuity thresholds to warn of hazardous voltages or short circuits.

Inspect Fuses Periodically: Always use genuine Hioki replacement fuses ( $11\text{ A}/1000\text{ V}$ and $630\text{ mA}/1000\text{ V}$ ) to maintain CAT IV safety ratings during high-current testing.

To review official test instrument datasheets, USB communication software downloads, and complete digital multimeter technical guides, check the global Hioki Official Measuring Instruments Directory.

To request a fast commercial quote or evaluate real-time regional warehouse stock availability for bulk procurement needs, please connect with our sales branch via the Control Qatar Contact Page.