Hioki DT4281 Digital Multimeter Complementing Models DT4252 and DT4256

Description

The Hioki DT4281 is a high-precision, 60000-count premium digital multimeter engineered for heavy-duty industrial applications, offering superior accuracy and safety profiles compared to utility-class models such as the DT4252 and DT4256.

While the DT4252 and DT4256 series serve as standard field maintenance instruments, the DT4281 functions as a high-density calibration-grade tool designed specifically to prevent accidental short-circuits. It eliminates direct current input terminals for high amperage, utilizing dedicated clamp-on sensor inputs instead to maximize operator safety in high-voltage environments.

TECHNICAL SPECIFICATIONS
Display: 5-digit LCD, max. 60000 digits
Measurement Type: True RMS
DC Voltage Range: 60.000 mV to 1000.0 V
DC Voltage Basic Accuracy: ±0.025% rdg. ±5 dgt.
AC Voltage Range: 60.000 mV to 1000.0 V
AC Voltage Frequency Characteristics: 20 Hz to 100 kHz
Resistance Range: 60.000 Ω to 600.0 MΩ
Conductance Range: 600.00 nS
Capacitance Range: 1.000 nF to 100.0 mF
Frequency Range: 99.999 Hz to 500.00 kHz
Temperature Range: -40.0 °C to 800.0 °C
Decibel Measurement: dBm / dBV
Low-pass Filter: Cut-off frequency 630 Hz
Safety Rating: CAT IV 600 V / CAT III 1000 V
IP Rating: IP42
Power Supply: LR6 alkaline batteries x4
Dimensions: 93 mm W x 197 mm H x 53 mm D
Weight: 650 g

INDUSTRIAL APPLICATION SCENARIO
In modern industrial automation, variable frequency drive (VFD) and inverter outputs present complex, high-frequency harmonic noise that distorts standard multimeter readings. The Hioki DT4281 resolves this critical measurement challenge using its integrated 630 Hz low-pass filter, isolating the fundamental wave frequency to deliver accurate voltage and frequency data. Furthermore, in high-power distribution panels where the risk of arc flash from incorrect terminal connection is high, the DT4281 eliminates the standard 10A terminal. Instead, its design forces the use of external clamp sensors for high current measurements, ensuring complete galvanic isolation and protecting personnel during critical diagnostics.

PROCUREMENT AND INTEGRATION
Original Engineering: Genuine Japanese manufacture and calibration standard conformity.
Technical Compatibility: Fully compatible with Hioki DT4910 thermistors, 9010-50 clamp-on probes, and L9207-10 test leads.
Lead Time: Ex-stock availability or 2-3 weeks standard factory dispatch depending on calibration certification requirements.

Key Attributes
Measuring Current Range: 600 uA to 600 mA
Measuring Voltage Range: 60 mV to 1000 V
Parameters Measured: DC Current, AC Voltage, Frequency
Place of Origin: Japan
Model Number: DT4281
Brand Name: Hioki
Dimensions: 21 * 13* 9cm
Feature: Waterproof
Low Battery Indicator: Yes
Material: Plastic
Max. AC Current: 600 mA
Max. AC Voltage: 1000 V
Max. DC Current: 600 mA
Max. DC Voltage: 1000 V
Measuring Capacitance Range: 1 nF to 100 mF
Measuring Inductance Range: ,
Measuring Resistance Range: 60 Ω to 600 mΩ
Operating Temperature: -20℃ to 50℃
DC Voltage Range: 60 mV to 1000 V
DCA Measurement Range: 600 uA to 600 mA
Accuracy: ±0.03%
Resistance Measurement Range: 60 Ω to 600 mΩ
Open-Terminal Voltage: 2.5V DC or less
Electrostatic Capacity Range: 1 nF to 100 mF

Packaging and Delivery
Selling Units: Single item
Single package size: 28X15X13 cm
Single gross weight: 1.200 kg