Test and Measurement Products

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HIOKI E E CORPORATION Data Logger LR8101, LR8102
The Data Logger LR8102 is a modular data acquisition system ideal for high-voltage and embedded applications. Designed for EV battery testing, PV inverter evaluation, and energy-efficient system analysis, it allows users to build the exact measurement system needed with flexible modules.

Key Features
- Modular design to expand channels as required
- Supports real-time high-speed data transfer (LR8102)
- Synchronize multiple loggers for large-scale measurements (LR8102)
- High-precision measurements for voltage, current, and temperature
- Ideal for battery charge/discharge testing and PV inverter production
- Compatible with power measurement modules (M7103) and voltage/temperature modules (M7100, M7102)
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HIOKI E E CORPORATION Digital Multimeter DT4281
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
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HIOKI E E CORPORATION DM7275 DC Voltmeter
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
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HIOKI E E CORPORATION DM7275 Precision Voltmeter
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
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HIOKI E E CORPORATION DM7276 DC Voltmeter
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
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HIOKI E E CORPORATION DMM Station MR8990 + MR8741
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
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HIOKI E E CORPORATION Hioki M7103 Module
The Hioki M7103 Module is a compact, high-precision power measurement solution designed for multi-channel efficiency testing of PV inverters, high-voltage batteries, and energy storage systems. Ideal for embedded and production line applications, it offers unmatched scalability, speed, and accuracy.

Key Features
- Power analyzer-class accuracy: DC/AC ±0.07%
- Supports up to 1500 V DC measurement
- 12 channels per 4U rack unit; expandable to 120 channels
- Synchronization Source Sharing for stable efficiency measurements
- High-speed data transfer with 5 ms sampling interval
- Suitable for PV inverter and multi-MPPT string efficiency testing
- Direct measurement without differential probes for high voltages
- Compliant with EN IEC 61010 safety standards
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HIOKI E E CORPORATION Hioki PQ3198 Analyzer
The Hioki PQ3198 Analyzer is a high-precision power quality analyzer designed to detect, log, and analyze electrical anomalies in single- to three-phase systems. Ideal for industrial equipment, EV chargers, and aviation systems, it ensures reliable troubleshooting and energy management.

Key Features
- IEC 61000-4-30 Ed.3 Class A compliant measurement
- High-accuracy voltage (±0.1%), current (±0.1%), and power (±0.2%) recording
- Detects voltage dips, swells, interruptions, frequency fluctuations, and inrush current
- Harmonics and supraharmonics measurement up to 80 kHz
- Transient voltage measurement up to 6000 V peak at 2 MS/s
- Two-circuit measurement with efficiency calculation
- GPS synchronization for multi-device setups (optional)
- Intuitive PQ ONE software for analysis and report creation
- Remote monitoring via GENNECT One and cloud-based services
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HIOKI E E CORPORATION Hioki VT1005 Divider
The Hioki VT1005 Divider allows safe, accurate measurement of high voltages up to 5000 V and evaluation of inverter efficiency with exceptional precision. Its broad frequency range, high noise immunity, and differential input design make it ideal for power system and high-voltage inverter applications.

Key Features
- Maximum input voltage: 5000 V AC/DC
- Differential input method for precise measurement
- ±0.08% DC accuracy, ±0.04% at 50/60 Hz, ±0.17% at 50 kHz
- Frequency band: DC to 4 MHz (-3 dB)
- Excellent amplitude flatness: ±0.1% up to 200 kHz
- Phase flatness: ±0.1° up to 500 kHz
- Noise resistance: CMRR 80 dB typical (100 kHz)
- Detects efficiency improvements on the order of 0.1%
- Safely measures high voltages that standard analyzers cannot handle
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HIOKI E E CORPORATION Hioki-PW4001-Analyzer
The Hioki PW4001 Analyzer is a portable, high-precision 4-channel power analyzer built for vehicle, motor, and inverter testing. It combines lab-grade measurement accuracy with field-ready portability, supporting high-frequency applications up to 600 kHz and real-world vehicle testing.

Key Features
- ±0.04% basic DC accuracy for precise measurements
- Frequency bandwidth from DC to 600 kHz
- Operates in harsh environments from -20°C to 50°C
- Auto phase shift correction for Hioki current sensors
- Direct CAN/CAN FD input and output for vehicle data acquisition
- Compact, portable design for field or lab use
- Motor and inverter efficiency evaluation with 1 ms data updates
- Direct voltage input up to 1500 V DC
- High-speed sampling at 2.5 MHz for waveform analysis
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HIOKI E E CORPORATION LR8432 Heat Flow Logger
The Hioki LR8432 Heat Flow Logger is a compact, lightweight, 10-channel data logger designed to visualize heat flow and analyze the root causes of temperature change. It supports accurate heat energy measurement for thermal performance evaluation in automotive, construction, and R&D environments.

Key Features
- Measures heat flow using dedicated heat flow sensors
- Records temperature and voltage simultaneously
- Ten fully isolated analog input channels for stable measurements
- Fast 10 ms sampling across all channels
- Simultaneous recording of raw and calculated waveforms
- Supports heat transmission coefficient calculations
- Dual gauge display for easy comparison of heat flow and temperature
- Data recording to USB flash drive or CompactFlash card
- Ideal for insulation evaluation and thermal performance analysis
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HIOKI E E CORPORATION LR8512 Pulse Logger
The Hioki LR8512 Wireless Pulse Logger is a compact, 2-channel device designed for pulse integration and RPM measurement. It’s ideal for monitoring vehicle speed, flow rates, and other ON/OFF signal applications, providing real-time data collection and wireless convenience.

Key Features
- Measures pulse totalization, logical ON/OFF signals, and revolutions
- Compact, 2-channel design for tight installation spaces
- Bluetooth® wireless connectivity for tablet or PC data download
- Three-way power: AC adapter, AA batteries, or external 5–13.5 V supply
- Stores up to 500,000 data points per channel
- Real-time monitoring with waveform and numerical trend display
- Optional magnetic strap for wall or equipment mounting
- Ideal for automotive, air conditioning, cogeneration, and fluid flow measurement
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HIOKI E E CORPORATION LR8512 Wireless Pulse Logger
The Hioki LR8512 Wireless Pulse Logger is a compact, two-channel solution designed for pulse integration and RPM measurement in flow and speed applications. With Bluetooth connectivity and long battery life, it enables easy data collection in locations where wiring is difficult or unsafe.

Key Features
- Measures pulse signals for flow rate and rotational speed analysis
- Ideal for pulse integration and RPM measurement applications
- Two-channel compact design for flexible installation
- Wireless Bluetooth data transfer to smartphone, tablet, or PC
- Real-time and historical waveform viewing capability
- Large internal memory storing up to 500,000 data points per channel
- Long battery operation up to 14 days with AA batteries
- Optional magnetic mounting for easy placement anywhere
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HIOKI E E CORPORATION LR8513 Clamp Logger
The Hioki LR8513 Wireless Clamp Logger is a compact, 2-channel device designed for accurate, wireless measurement of AC/DC load currents and AC leakage currents. It’s ideal for industrial, automotive, and PV system maintenance applications where real-time monitoring and safety are essential.

Key Features
- Measures AC/DC load current and AC leakage current
- Supports a wide variety of current sensors
- Safe measurement inside distribution panels with closed covers
- Simple power calculations using voltage and power factor
- Compact, 2-channel design for tight spaces
- Bluetooth® wireless connectivity for tablet or PC data download
- Three-way power: AC adapter, AA batteries, or external 5–13.5 V supply
- Stores up to 500,000 data points per channel
- Real-time waveform monitoring and historical data review
- Optional magnetic strap for flexible installation
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HIOKI E E CORPORATION LR8513 Wireless Clamp Logger
The Hioki LR8513 Wireless Clamp Logger is a compact, two-channel current logging solution designed for easy measurement of AC and DC load current as well as AC leakage current. With Bluetooth connectivity and flexible sensor options, it enables safe, efficient monitoring inside distribution panels and hard-to-access locations.

Key Features
- Measures AC and DC load current and AC leakage current
- Supports a wide range of compatible clamp current sensors
- Wireless Bluetooth data transfer to smartphone, tablet, or PC
- Compact two-channel design fits inside tight electrical panels
- Enables power measurement by setting voltage and power factor
- Large internal memory storing up to 500,000 data points per channel
- Multiple power options including AA batteries, AC adapter, or external supply
- Ideal for electrical maintenance, PV systems, and equipment testing
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HIOKI E E CORPORATION LR8514 Humidity Logger
The Hioki LR8514 Wireless Humidity Logger is a compact and reliable device for monitoring environmental conditions in production plants, agricultural sites, and storage facilities. It enables easy, wireless data collection of temperature and humidity for two locations simultaneously, ensuring precise control over critical environments.

Key Features
- High-precision humidity measurement (±3% RH)
- Records temperature and humidity simultaneously at two locations
- Compact 2-channel design fits in tight spaces
- Bluetooth® wireless connectivity for PC and tablet data download
- Supports AC adapter, AA batteries, or 5–13.5 V external power supply
- Store up to 500,000 data points per channel
- Ideal for factories, storage, construction sites, and agricultural monitoring
- Real-time waveform review and trend analysis
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