DIGITAL HiTESTER 3239 HIOKI

Description

Unveiling Hidden Electrical Circuit Behavior

In the intricate world of electronics and electrical engineering, accurate and versatile measurement is the cornerstone of design, troubleshooting, and quality control. While basic multimeters suffice for simple checks, the demands of modern circuits often require a deeper level of insight. Engineers and technicians frequently encounter scenarios where standard two-terminal resistance measurements are skewed by lead resistance, or where distorted AC waveforms obscure true RMS values. The ability to precisely measure very low resistances, analyze complex AC signals, and reliably log data becomes critical for diagnosing subtle faults, optimizing performance, and ensuring the longevity of sophisticated systems. Without an instrument that can delve into these nuanced electrical behaviors, resolving complex issues becomes a daunting, time-consuming, and often imprecise task.

Hioki 3239: High-Precision Benchtop Multimeter

The Hioki 3239 Digital Multimeter is a high-precision benchtop multimeter, distinguished by its exceptional accuracy and broad measurement capabilities, making it an indispensable tool for demanding electrical analysis. Unlike handheld meters, the 3239 offers the stability and features required for detailed characterization in laboratory, R&D, and production environments. A standout feature is its reliable resistance measurement using the 4-terminal measurement method. This advanced technique eliminates the influence of lead resistance and contact resistance, which are common sources of error in standard 2-terminal measurements, especially for very low resistance values. By using separate leads for current injection and voltage sensing, the 3239 displays outstanding resistance measurement capabilities, ensuring that the displayed resistance value is purely that of the component under test, unaffected by external variables.

The 3239 provides comprehensive voltage and current measurement ranges:

• DC Voltage range: From 199.999 mV to 1000.00 V across 5 ranges, boasting a basic accuracy of $\pm 0.01\%$ rdg. $\pm 2$ dgt., making it exceptionally precise for DC applications.
• AC Voltage range: From 1999.99 mV to 750.00 V across 4 ranges, with frequency characteristics spanning 10 Hz to 300 kHz. Its basic accuracy is $\pm 0.1\%$ rdg. $\pm 100$ dgt., utilizing True RMS rectified measurement to accurately capture even distorted AC waveforms. It also accounts for crest factor addition error.
• DC Current range: 199.999 mA/1999.99 mA across 2 ranges, with a basic accuracy of $\pm 0.1\%$ rdg. $\pm 6$ dgt.
• AC Current range: 199.999 mA/1999.99 mA across 2 ranges, with frequency characteristics from 10 Hz to 30 kHz. Its basic accuracy is $\pm 0.3\%$ rdg. $\pm 100$ dgt., also featuring True RMS rectification and crest factor addition error. This comprehensive suite of precise measurement capabilities, particularly the invaluable 4-terminal resistance measurement, positions the Hioki 3239 as a top-tier instrument for a wide range of electrical and electronic testing needs.

Unrivaled Resistance and Frequency Measurement

The Hioki 3239 Digital Multimeter offers unrivaled resistance and frequency measurement capabilities, distinguishing itself from standard DMMs. Its resistance measurement options are exceptionally versatile:

• Resistance range (2-terminals): From 199.999 Ω to 100.000 MΩ across 7 ranges, with a basic accuracy of $\pm 0.02\%$ rdg. $\pm 2$ dgt. This broad range covers typical resistance measurements for general components.
• Low-power Resistance range (2-terminals): From 1999.99 Ω to 1999.99 kΩ across 4 ranges, with a basic accuracy of $\pm 0.02\%$ rdg. $\pm 6$ dgt. This low-power mode is crucial for testing components that are sensitive to measurement current, such as semiconductor junctions, preventing unintended activation or damage.
• Resistance range (4-terminals): From 199.999 Ω to 1999.99 kΩ across 5 ranges, with a basic accuracy of $\pm 0.02\%$ rdg. $\pm 2$ dgt. This is the flagship resistance feature, ensuring highly accurate measurements unaffected by lead resistance, making it ideal for low-value resistors, cables, and connections.
• Low-power Resistance range (4-terminals): From 1999.99 Ω to 1999.99 kΩ across 4 ranges, with a basic accuracy of $\pm 0.02\%$ rdg. $\pm 6$ dgt. This combines the benefits of 4-terminal measurement with low testing current, suitable for sensitive low-resistance components.

Beyond resistance, the 3239 excels in frequency measurement with its Hz range (Frequency). It spans from 99.9999 Hz to 300.000 kHz across 5 ranges, offering an impressive accuracy of $\pm 0.015\%$ rdg. $\pm 2$ dgt. The attenuator provides flexibility with settings from 2 V to 700 V in 4 ranges, and an input sensitivity of 10% of range. This wide frequency range and high accuracy are invaluable for testing oscillating circuits, power supply frequencies, and signal integrity in various electronic designs. The ability to perform precise 4-terminal resistance measurements, coupled with comprehensive frequency analysis, makes the Hioki 3239 an exceptionally powerful and versatile tool for advanced electronic diagnostics and characterization, surpassing the capabilities of many conventional digital multimeters.

Essential Connectivity and Built-in Functions

The Hioki 3239 Digital Multimeter integrates essential connectivity and built-in functions, transforming it from a mere measurement tool into a comprehensive testing solution. These features are designed to enhance efficiency, automate tasks, and provide immediate feedback, crucial for both R&D and production environments. A key feature for quality control is the Comparator function. This allows users to set upper and lower limits for various measurement parameters. The 3239 can then provide a clear PASS/FAIL judgment, which is invaluable for high-volume testing, eliminating subjective interpretation and speeding up quality checks on components or products.

For streamlining workflow and ensuring repeatability, the instrument includes Save/Load of settings. This function enables users to store and recall specific measurement configurations (ranges, functions, comparator limits) quickly. This is particularly useful when testing multiple types of components or performing different tests on the same product, significantly reducing setup time and potential errors. The Printer output capability allows for direct hardcopy documentation of measurement results, essential for record-keeping and quality assurance traceability. A highly practical feature for expanded current measurement is the ability to perform current measurement with clamp-on probes and scaling. This means the 3239 can display the actual current value (after applying a scaling factor) when used with external clamp-on current sensors, allowing for non-intrusive measurement of higher currents that might exceed the meter’s direct input limits. Lastly, the External control I/O provides physical input/output lines, enabling the 3239 to be integrated into automated test systems or production lines. It can receive triggers to initiate measurements or send signals indicating test completion or pass/fail results. The Digital LED display with a max. 199999 digits ensures clear and precise readings. Combined with a versatile sampling rate (300 times/s for Fast, 8-9 times/s for Medium, 1 time/s for Slow), these features make the Hioki 3239 a highly adaptable and efficient instrument for a wide range of demanding electrical measurement and automation tasks.

Diverse Applications: Powering Precision

The Hioki 3239 Digital Multimeter, with its exceptional precision, 4-terminal resistance measurement, True RMS capability, and robust feature set, finds diverse applications, powering precision across a wide array of industries and engineering disciplines.

In R&D and Laboratory Settings, the 3239 is an invaluable benchtop instrument for characterizing new components and circuit designs. Its precise DC/AC voltage and current ranges are used for fine-tuning analog circuits, validating power supply outputs, and measuring quiescent currents. The 4-terminal resistance measurement is critical for characterizing precision resistors, shunts, or measuring the resistance of wires and traces in delicate prototypes, where lead resistance can significantly skew results. The low-power resistance mode is ideal for testing sensitive components like thermistors or diodes without inadvertently influencing their characteristics. In Quality Control and Production Lines, the comparator function and external I/O make the 3239 an excellent choice for automated testing of electronic components, sub-assemblies, and finished products. It can quickly verify component tolerances (resistors, inductors’ DC resistance, fuse resistance) and check for continuity or shorts in wiring harnesses. The True RMS AC current/voltage measurements are essential for evaluating power consumption and performance of products with non-linear loads.

For Maintenance and Troubleshooting in industrial and commercial environments, the 3239’s ability to measure both standard and low resistances precisely helps in diagnosing issues in motors (winding resistance), transformers, cables, and connections. Its accurate frequency measurement can identify power quality issues or problems with oscillating circuits. The clamp-on probe compatibility allows technicians to measure higher currents safely in live panels. Furthermore, in Battery Testing and Power Electronics, the low-resistance 4-terminal measurement is crucial for evaluating internal resistance of battery cells and packs, a key indicator of health and performance. Its precision DC voltage and current ranges are also vital for testing and verifying the performance of power converters and charging circuits. The Hioki 3239’s comprehensive and precise capabilities make it a cornerstone instrument for ensuring the accuracy, reliability, and safety of electrical systems and electronic products in these diverse and demanding fields.

Robust Japanese Engineering and Safety

The Hioki 3239 Digital Multimeter is a prime example of robust Japanese engineering and unwavering safety, ensuring both high performance and user peace of mind. Hioki’s commitment to quality is deeply ingrained in its manufacturing philosophy. The company ensures that all development, design, and manufacturing processes for its digital multimeters are carried out at their Head Office in Nagano Prefecture, Japan. This vertically integrated approach provides Hioki with unparalleled control over every stage of product creation, from the meticulous selection of high-grade materials to the intricate assembly of precision components and rigorous final calibration. By leveraging some of the industry’s most advanced technological capabilities, Hioki consistently delivers products of the highest possible quality. This dedication to in-house production translates directly into exceptional measurement stability, long-term accuracy, and robust durability for the 3239, allowing it to withstand the demands of continuous professional use in challenging industrial and laboratory environments.

Beyond manufacturing quality, user safety is paramount. The 3239 is designed to meet stringent international safety standards, implicitly including classifications like IEC 61010 measurement categories (e.g., CAT III or CAT IV, depending on its exact voltage ratings, though not explicitly stated in the provided text). This ensures that the instrument’s internal components, insulation, and overall design are robust enough to protect the user from electrical shocks and arc flashes, even when unexpected voltage spikes or faults occur on the circuit being measured. The inclusion of safety features like a Continuity test (with a beep sound for 50.00 Ω or less at 1999.99 Ω range, and a testing current of 100 μA) and a Diode test (with 1999.99 mV range and a testing current of 1 mA) highlights its utility for basic circuit diagnostics while maintaining safety. The provision of Test Lead L9170-10, an instruction manual, power cord, and spare fuses as included accessories further underscores Hioki’s commitment to immediate usability and long-term, safe operation. This combination of superior engineering and robust safety features positions the 3239 as a reliable and trustworthy instrument for professionals worldwide.

User-Friendly Design and Global Power

The Hioki 3239 Digital Multimeter is built with a focus on user-friendly design and global power compatibility, making it practical and accessible for professionals worldwide. Its physical dimensions are 215 mm (8.46 in) W × 80 mm (3.15 in) H × 265 mm (10.43 in) D. This compact size allows it to fit comfortably on any workbench or integrate seamlessly into automated test setups, without consuming excessive valuable space. Despite its robust capabilities, it maintains a manageable weight of 2.6 kg (91.7 oz), making it relatively easy to move or transport within a facility, offering flexibility for various testing locations.

The instrument features a clear Digital LED display, capable of showing a maximum of 199999 digits. This high digit count ensures precise and detailed readings, allowing users to discern even minute changes in measured values. The clarity of the LED display is beneficial in various lighting conditions. For operational flexibility, the 3239 offers multiple sampling rates: 300 times/s (Fast) for capturing rapidly changing signals or for high-speed automated testing, 8 to 9 times/s (Medium) for general-purpose measurements, and 1 time/s (Slow) for stable readings in noisy environments or for long-term monitoring where high refresh rates aren’t critical. This adaptability in sampling rate allows users to optimize the meter’s performance based on the specific measurement task. Furthermore, the power supply is globally compatible, with selectable options of 100/ 120/ 220/ 240 V AC (specify when ordering), at 50/60 Hz. This universal voltage input means the 3239 can be safely operated in virtually any country without the need for external power transformers, simplifying deployment and inventory management for international operations. This thoughtful combination of a compact footprint, clear display, flexible sampling, and worldwide power compatibility ensures that the Hioki 3239 is a convenient, reliable, and globally deployable solution for demanding electrical measurement tasks.

tpt24.com: Your Premier Global Source

In the demanding world of electrical engineering, research, and quality control, acquiring a high-precision instrument like the Hioki 3239 Digital Multimeter demands a supplier that embodies expertise, trust, and global reach. tpt24.com proudly stands as the world’s leading online store for this exceptional product line. Our unwavering commitment is to provide you with a seamless acquisition experience, fortified by an absolute guarantee of authenticity and an uncompromising dedication to quality for every product we deliver. We deeply understand that the accuracy of your designs, the reliability of your systems, and the efficiency of your troubleshooting efforts hinge fundamentally on the precision and longevity of the test equipment you employ. Therefore, every Hioki 3239 unit, along with its essential accessories like the Test Lead L9170-10, sourced through tpt24.com, is meticulously guaranteed to be a genuine Hioki product. These instruments are manufactured to the most stringent industry standards and rigorously tested to ensure peak performance, consistently delivering the precise and versatile measurements you demand for your critical applications.

What truly sets tpt24.com apart is our profound commitment to global accessibility. We firmly believe that geographical location should never be a barrier to acquiring the world’s most advanced test and measurement technology. Consequently, tpt24.com offers swift and secure worldwide delivery of the Hioki 3239 Digital Multimeter to any country you operate in. Our robust and highly efficient global logistics network ensures that your valuable investment is handled with the utmost care, processed promptly, and dispatched efficiently, arriving at your facility in pristine condition and within a predictable timeframe. We fully appreciate the time-sensitive nature of complex diagnostics, the urgency often associated with design validation, and the necessity for reliable data in every stage of a project’s lifecycle. Our streamlined online purchasing experience, coupled with our dependable international shipping capabilities, is meticulously designed to minimize any potential delays, enabling you to integrate this powerful instrument into your laboratory or production line with maximum speed and efficiency. When you choose tpt24.com, you are selecting a trusted global partner, committed to providing you with not only cutting-edge technology but also unparalleled service, absolute product authenticity, guaranteed quality, and reliable worldwide delivery. Your journey towards unparalleled electrical measurement precision begins here, with the confidence that comes from sourcing your equipment from the world’s best.