Meters

The Digital Multimeter DT4281 is Hioki’s flagship high precision multimeter, engineered for advanced electrical and power system testing. Featuring a 60000 count display, true RMS measurement, and industry leading safety design, it delivers fast, accurate results even in complex and high energy environments.

Key Features

• High resolution 60000 count digital multimeter
• Excellent DC voltage accuracy of ±0.025 percent
• Wide AC voltage frequency range from 20 Hz to 100 kHz
• True RMS measurement for accurate readings on distorted waveforms
• Low pass filter for inverter and harmonic rich signals
• Clamp sensor based current measurement for enhanced safety
• Terminal shutter mechanism to prevent incorrect lead insertion
• Dual display for simultaneous voltage and frequency monitoring
• CAT IV 600 V and CAT III 1000 V safety rated
• Designed and manufactured in Japan with 3 year warranty

The DM7275 Precision DC Voltmeter is a high stability 7 and a half digit DC voltmeter designed to bridge the gap between research environments and high volume production lines. With a guaranteed one year accuracy of 20 ppm, it delivers reliable and repeatable measurements for lithium ion batteries, advanced capacitors, and next generation electronic components.

Key Features

• 7 and a half digit DC voltage measurement
• 1 year guaranteed 20 ppm accuracy
• Ideal for R and D and production line testing
• Capacitance contact check using built in C monitor
• Fully automatic self calibration for long term stability
• Resistant to temperature fluctuations
• Simultaneous voltage and temperature measurement
• Temperature compensated voltage display
• Built in EXT I O, LAN, and USB interfaces
• Optional GP IB or RS 232C communication models
• Built in variable power supply for global production use

The DM7275 Precision DC Voltmeter provides 7½-digit resolution and 20 ppm accuracy, making it perfect for R&D, production lines, and high-precision battery testing. Its advanced contact check, temperature compensation, and multiple connectivity options ensure reliable measurement for lithium-ion batteries, EV components, and next-generation devices.

Key Features

• High-accuracy 7½-digit DC voltmeter with 20 ppm (0.002%) guaranteed accuracy
• Built-in capacitance contact check for maximum measurement reliability
• Temperature compensation converts voltage to standard temperature values
• Fully automatic self-calibration for long-term stability
• Built-in EXT I/O, LAN, USB, GP-IB (DM7275-02), and RS-232C (DM7275-03)
• Supports R&D and production line environments worldwide
• Simultaneous measurement of temperature and voltage
• Ideal for Li-ion batteries, EV components, and electrical double-layer capacitors

The DM7276 Precision DC Voltmeter is a 7 and a half digit high accuracy instrument designed for ultra precise DC voltage measurement. With industry leading 9 ppm accuracy, it is ideal for lithium ion battery aging tests, capacitor evaluation, and next generation energy device development.

Key Features

• 7 and a half digit precision with 9 ppm accuracy
• Designed for lithium ion battery aging and evaluation
• Built in capacitance contact check for reliable measurements
• Fully automatic self calibration for long term stability
• Resistant to temperature fluctuations and environmental changes
• Simultaneous voltage and temperature measurement
• Temperature compensated voltage display
• Supports global production with variable power supply
• Built in EXT I O, LAN, and USB interfaces
• Optional GP IB or RS 232C communication models

The DMM Station MR8990 combined with the MR8740 or MR8741 Memory HiCorder delivers high precision, simultaneous DC voltage measurement across up to 32 channels. Designed for capturing minute voltage fluctuations, this system is ideal for advanced sensor analysis, battery testing, and automotive electronics evaluation.

Key Features

• High precision DC voltage measurement using DVM Unit MR8990
• Simultaneous sampling across multiple channels
• Supports up to 32 channels with expandable configuration
• Measures minute voltage fluctuations with high resolution
• Accuracy of ±0.01 percent with 1.2 million count resolution
• High speed sampling up to 500 samples per second
• Isolated inputs for enhanced safety and signal integrity
• Suitable for battery, sensor, and automotive testing
• Rack mountable system for laboratory and production use
• Compatible only with MR8740 and MR8741 Memory HiCorders

The Hioki 3153 HiTESTER is an all-in-one solution for insulation resistance and AC/DC voltage withstand testing. It is fully programmable for automated multi-point testing, making it ideal for industrial, manufacturing, and electrical safety applications.

Key Features

• Programmable insulation testing from 50 V to 1200 V DC
• Dielectric strength testing for AC/DC voltages up to 5 kV
• Store and program up to 32 test files with 50 steps each
• Optional scanner for automatic multi-point testing
• Accurate voltage generation via PWM method, independent of supply voltage
• Ramp timer function for controlled voltage rise/fall during testing
• Digital display of measured voltage, current, and resistance
• Compact design with full remote operation capability

The Hioki 3930 High Voltage Scanner is a passive auxiliary device designed to streamline multi-point high-voltage testing when paired with the Hioki 3153 or a sequencer. Its isolated channels allow safe and efficient AC/DC voltage testing while minimizing connection changes, making it ideal for industrial testing and quality control applications.

Key Features

• Supports AC/DC high-voltage output up to 5 kV
• Multi-point testing: 8 channels per unit, up to 32 channels with 4 connected units
• Fully isolated HV I/O, control lines, and power supply
• Operates in multi-mode or single-mode scanning for flexible testing
• Compatible with Hioki 3153 program function or standard sequencer
• Fast operation with <6 ms response and recovery time
• Includes HV test leads, control connector cable, and grounding cable

The Hioki BT5525 Tester is engineered for battery production lines to detect microscopic insulation defects and contamination before shipment. It ensures safety, reduces false negatives, and accelerates high-speed testing, making it ideal for modern battery manufacturing.

Key Features

• Proprietary BDD function detects minuscule internal short-circuits caused by contamination
• Stable insulation resistance testing even in noisy environments
• Contact check function prevents erroneous judgments
• Maximum test voltage of 500 V for battery cell, module, and pack testing
• High-speed charging up to 50 mA and discharging up to 40 mA for faster testing
• Compact design allows integration into battery production systems
• Cost-effective solution for small to large battery cells and packs
• PC application for waveform review and CSV data export

Key Features:

• Fastest insulation tester in the industry with results in as little as 50 ms
• Wide test voltage range: 25 V to 1000 V with 1 V resolution
• Quick residual voltage discharge for faster takt times
• Contact check function prevents false readings from poor connections
• Short-circuit check detects micro-shorts before testing
• Built-in LAN and RS-232C for system integration
• Compact, lightweight design ideal for battery and production line testing
• Models available: ST5520 (I/O output) and ST5520-01 (BCD output)

The SM7120 Super Megohm Meter provides rapid, ultra-low current and high-resistance measurement, making it perfect for automated production lines, high-voltage applications, and precise testing of electronic components, EV parts, and insulation materials. Its 2000 V output, exceptional noise resistance, and flexible design ensure reliable, repeatable measurements even in complex environments.

Key Features

• 6.4 ms high-speed measurement including contact check
• Maximum 2000 V output for high-voltage testing
• 0.1 fA ultra-low current resolution for precise detection
• 2 × 10¹⁹ Ω maximum display range
• 300x improved noise resistance for stable results
• Built-in EXT I/O, RS-232C, GP-IB, and USB connectivity
• Multipurpose functionality: Electrometer, Picoammeter, IR Meter
• Ideal for electronic components, EVs, wearables, and insulation testing

The SM7420 Super Megohm Meter offers ultra-low current measurement with 4-channel simultaneous testing, making it ideal for automated production lines and high-precision inspection of passive components like capacitors and filters. Its advanced noise resistance, channel-independent contact checks, and multiple connectivity options ensure accurate, repeatable, and high-speed performance for mass production.

Key Features

• Four-channel ultra-low current measurement with 0.1 fA resolution
• Industry-leading noise resistance, 300x better than previous models
• High-speed testing: 6000 ps/minute for mass production efficiency
• Channel-independent low-capacitance contact check
• Built-in EXT I/O, RS-232C, GP-IB, and USB connectivity
• Ideal for automated MLCC leakage current inspection lines
• Supports integration into automated production systems

The SW2001 High Voltage Multiplexer is a durable and reliable solution designed to simplify complex motor testing setups. It allows safe and seamless switching between high voltage testing and 4 terminal low voltage measurements, helping manufacturers improve efficiency, accuracy, and equipment protection across production lines.

Key Features

• Consolidates six motor tests into one multiplexer system
• Enables safe switching between high voltage and low voltage measurements
• Supports resistance, inductance, surge, hipot, insulation resistance, and partial discharge tests
• Available in 4, 8, and 16 channel configurations
• Reduces test time and manual reconnections
• Protects low voltage instruments from stored energy damage
• Designed for long service life with high durability relays

• Maximum safety in the field by absolutely preventing short-circuit accidents with fused measurement terminals and current-limiting resistor
• ±0.3% DC V basic accuracy, wide 40 Hz to 1 kHz AC V frequency characteristics
• Low-pass filter (100 Hz/ 500 Hz) cuts high harmonics (when measuring inverter fundamental waveforms)
• Connect to PC with USB communication function (optional)
• Broad -25°C (-13°F) to 65°C (149°F) operating temperature range CAT IV 600 V, CAT III 1000 V