Description

UNI-T UT3513 Bench Top Micro Ohm Meter – Precision Low Resistance Measurement for Professional Applications

The UNI-T UT3513 Bench Top Micro Ohm Meter is a high-precision, bench-top instrument designed for accurate measurement of low resistance values with exceptional stability and reliability. It’s ideal for applications that require exact contact resistance testing, such as switches, relays, connectors, cables, transformers, motors, and welding joints.

Engineered with advanced four-wire Kelvin measurement technology, the UT3513 ensures consistent and error-free readings by effectively eliminating lead and contact resistance. This makes it an essential tool for laboratories, manufacturing lines, and electrical inspection departments.

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High Accuracy and Wide Measurement Range

The UT3513 provides a measurement range from 0.1μΩ to 20kΩ, covering both ultra-low and moderate resistance applications. With a basic accuracy of ±(0.05% + 3 digits), it delivers reliable results suitable for precision quality control and performance testing.

The instrument supports multiple measurement ranges (10mΩ, 100mΩ, 1Ω, 10Ω, 100Ω, 1kΩ, 10kΩ, and 20kΩ), allowing users to adapt easily to various testing environments.

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Four-Wire Kelvin Measurement Technology

To ensure ultra-accurate readings, the UNI-T UT3513 uses the Kelvin (4-terminal) measurement method. This technique applies a constant current through the outer leads while sensing the voltage across the inner leads, effectively eliminating errors caused by test lead resistance.

This method provides exceptional precision even for extremely small resistance values, making it perfect for testing busbars, switchgear, circuit breakers, and power connectors where contact resistance must be measured accurately.

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Fast Measurement Speed and Stability

The UT3513 offers fast measurement speeds of up to 60 readings per second, ensuring efficiency during production testing or repetitive quality inspections. The meter maintains high stability and repeatability, even under fluctuating temperature and humidity conditions, thanks to its advanced internal compensation circuits.

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Large Display and User-Friendly Interface

The bright, high-contrast LCD display presents clear, easy-to-read measurements, including range, unit, and function indicators. The front panel layout is intuitive, allowing users to quickly select ranges, adjust settings, and perform zero compensation for enhanced accuracy.

With dedicated function keys and an ergonomic design, the UT3513 offers smooth operation whether used in laboratories or production lines.

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Data Communication and Integration

The UT3513 includes RS-232 and USB interfaces, making it compatible with computer-based data acquisition systems. Engineers can record, analyze, and store resistance data conveniently for long-term tracking and reporting.

This feature allows seamless integration into automated testing systems or quality control workflows, improving productivity and documentation accuracy.

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Durable Construction for Industrial Use

Built with high-quality materials and designed for long-term stability, the UT3513 delivers consistent performance even in demanding environments. Its solid bench-top housing, efficient cooling system, and anti-interference design ensure reliability in industrial labs and factories.

The instrument complies with CAT I 300V safety standards and includes overload protection, safeguarding both the device and the operator during testing.

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Key Features

• Measurement Range: 0.1μΩ – 20kΩ

• Resolution: Up to 0.1μΩ

• Accuracy: ±(0.05% + 3 digits)

• Test Current: 10mA – 10A (selectable depending on range)

• Measurement Speed: Up to 60 readings/second

• Display: Large high-contrast LCD screen

• Communication Interface: RS-232, USB

• Measurement Method: 4-wire Kelvin technique

• Power Supply: AC 220V / 50Hz

• Safety Rating: CAT I 300V

• Dimensions: Approx. 320 × 280 × 110 mm

• Weight: Around 4 kg

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Typical Applications

• Contact resistance testing for relays, switches, and connectors

• Quality control in cable and wire manufacturing

• Transformer and motor winding resistance testing

• Power distribution busbar and welding joint testing

• Research, development, and calibration laboratories

• Automotive and aerospace component inspection

The UT3513 is a perfect choice for industries where precision, speed, and reliability are essential in resistance measurement.

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Why Choose the UNI-T UT3513 Bench Top Micro Ohm Meter?

The UNI-T UT3513 stands out for its combination of high accuracy, fast response, and robust design. It provides laboratory-grade precision in a durable bench-top form factor, offering both manual and automated operation capabilities.

If your work involves low resistance measurement, this meter ensures confidence and precision in every reading — making it a trusted instrument for engineers, QA specialists, and test technicians worldwide.

Data Sheet