UNI-T UT 620A Digital Micro Ohm Meter - Image 2

UNI-T UT 620A Digital Micro Ohm Meter

UT620A is used to measure DC low resistance through 4-wire method. Its features are: Comparison function to determine if the device is in good condition, unknown wire length calculation (FT/M); two-way data transmission by USB interface. UT620A can be used in narrow space for on-site troubleshooting, such as metal coating resistance, motor and small transformer winding resistance, welding points, power distribution cabinet bus, lead connection inspections, and more.

Product Datasheet

Category: Contact Resistance Test Set

Description
Brand

Product overview:UNI-T UT620A Micro Ohm Meter

The UNI-T UT620A Micro Ohm Meter is a high-precision instrument designed for accurate measurement of low resistance in electrical systems. Engineers and technicians use the UNI-T UT620A Micro Ohm Meter for testing contacts, joints, cables, and winding resistance in industrial and maintenance applications.

This advanced device uses a 4-wire (Kelvin) measurement method, which eliminates lead resistance and ensures highly accurate results. It offers a resolution of 10 µΩ and delivers reliable performance across multiple resistance ranges.
As a result, users can detect even small resistance variations and prevent potential system failures.

Moreover, the tester supports a wide resistance measurement range, including 60 mΩ (10A), 120 mΩ (5A), and up to 6 kΩ, making it suitable for both low and medium resistance applications.
In addition, its high accuracy of ±(0.25%+25) ensures consistent and repeatable measurements in demanding environments.

The device features a large 60000-count LCD display, providing clear and precise readings. Furthermore, it includes useful functions such as wire length measurement, high/low limit alarms, and relative mode, which enhance testing efficiency.
Therefore, users can perform faster diagnostics and make informed decisions during maintenance.

Additionally, the device includes built-in data storage for up to 1000 readings and supports USB communication for easy data transfer and reporting.
Thus, it integrates easily into modern testing workflows and quality control systems.

The device is powered by a rechargeable lithium battery and features a compact, portable design, making it ideal for both field and laboratory use.

Features of UT620A Digital Micro Ohm Meter

● Comparison measurement with upper and lower limits

● Wire length measurement (m/ft)

● Built-in Lithium battery

● 1000-group data storage

● Improved measurement method which improves accuracy by counter-balancing contact resistance of leads

● Data transmission between USB and PC

● Data hold

● LCD backlight

● Zeroing function, relative mode

● IND resistance measurement mode

Applications of Micro Ohm Meter

Technicians use this device to measure contact resistance in circuit breakers, switches, cables, welding points, and transformer windings. As a result, they can detect faults early and ensure safe and reliable operation of electrical systems.

Brand

UNI-T, CHINA

UNI-T Test Equipment Pakistan

UNI-T Test Equipment Pakistan provides reliable solutions for electrical measurement, diagnostics, and electronic testing. The globally recognized brand UNI‑T develops professional instruments used by engineers, technicians, electricians, and electronics professionals. In Pakistan, Sarwar Electronics serves as an official dealer and reseller of UNI-T products, supplying genuine testing instruments to engineers and technical professionals across the country. These tools help users perform accurate measurements, troubleshoot electrical systems, and maintain equipment reliability.

About UNI-T China

UNI‑T (Uni‑Trend Technology Co., Ltd.) is a leading manufacturer of electronic testing and measurement instruments. The company focuses on innovative technology and high-quality manufacturing to support professionals working in electrical, industrial, and electronics environments. Because modern industries require precise measurement tools, UNI-T products combine advanced features with durable design. As a result, engineers can perform reliable diagnostics and measurement tasks in demanding conditions.

UNI-T Product Range

UNI-T offers a wide selection of instruments designed for electrical testing and measurement applications. Popular product categories include:

Digital multimeters
Clamp meters
Digital oscilloscopes
Insulation testers
Power measurement instruments
Electronic testing tools

These instruments allow professionals to measure voltage, current, resistance, and other electrical parameters accurately.

Applications of UNI-T Instruments

UNI-T instruments support many industries that require accurate electrical measurement and diagnostics. Common applications include:

Electrical installation testing
Industrial equipment maintenance
Electronics repair and diagnostics
Power system inspection
Technical training and laboratories

Accurate testing tools help engineers detect faults early and maintain reliable system performance.

Reliable Test Equipment in Pakistan

In Pakistan, Sarwar Electronics provides genuine UNI-T testing instruments for engineers, technicians, and industrial professionals. Access to professional measurement tools helps organizations improve efficiency and maintain electrical safety standards. With continuous innovation and advanced technology, UNI‑T continues to deliver dependable testing solutions used worldwide.