UNI-T UT620A Digital Micro Ohm Meter

UNI-T UT620ADigital Micro Ohm Meter

The UNIT UT620A is a precision digital microohm meter designed for accurate lowresistance measurements in constrained environments. It employs a true fourwire (Kelvin) measurement method to eliminate lead and contact resistance errors, delivering highresolution readings down to 10. A large LCD display with backlight ensures legibility in dimly lit areas, while a builtin lithiumion battery provides hours of untethered operation.

Key features include a high/low limit comparison function that alerts users when measured values fall outside preset thresholds, enabling rapid go/nogo testing. The meter can also calculate unknown wire lengths in feet or meters, making it ideal for verifying cable runs. Data hold, relative (zero) mode, and automatic poweroff enhance usability and conserve battery life. Up to 1,000 measurement results can be stored internally, and bidirectional USB connectivity allows seamless twoway data transfer between the meter and a PC for trend analysis.

With a measurement range spanning from 10 up to 6k across multiple current levels (10mA to 5A), the UT620A balances wide dynamic range with up to (0.25%+25) basic accuracy in its lower ranges. This combination makes it suitable for applications such as:

• Transformer and motor windingresistance checks, ensuring coil integrity and detecting shorted turns.
• Welding jointinspections, verifying contact quality in critical assemblies.
• Busbar and cable connectivitytests in power distribution cabinets.
• Metal coatingresistance measurements, confirming plating uniformity.
• Automotive and PCBtrace resistance verification in repair and manufacturing settings.

Rugged yet compact (37090290mm), theUT620Acomes with Kelvin clips, test leads, USB cable, power adapter, software CD, and an English user manual. Its thoughtful design, extensive feature set, and robust data management capabilities make it an essential tool for electricians, maintenance engineers, and qualitycontrol technicians requiring fast, reliable lowresistance diagnostics.

Features:

• FourWire (Kelvin) Measurement: Eliminates lead/contact resistance for precise low readings.
• High/Low Limit Alarm: Comparison function with upper and lower thresholds for quick go/nogo tests.
• WireLength Calculation: Converts resistance into length (m/ft) to verify cable runs.
• Builtin LithiumIon Battery: 7.4V/4000mAh for hours of portable use.
• 1000Group Data Storage: Internal logging for later recall and analysis.
• USB PC Connectivity: Bidirectional data transfer (HIDcompliant) for realtime monitoring and trend analysis.
• Data Hold & Relative (Zero) Mode: Freeze the display and zeroout test leads for differential measurements.
• LCD Backlight: Ensures readability in dim environments.
• Auto PowerOff & LowBattery Indicator: Conserves power and warns when recharging is needed.

Specifications:

General Characteristics:

Applications:

• Power Transformer Testing.
• Electric Motor Maintenance.
• Welding Inspection.
• Busbar & Switchgear Testing.
• Electrical Cable Quality Control.
• Metal Conductor & Coating Verification.
• Aerospace, Rail & Automotive.
• Battery Pack Assembly.

Package Include:

• 1xUT620A Digital Micro Ohm Meter (main unit)
• 1xKelvin test leads (red and black)
• 1xPower cord
• 1xPower adapter
• 1xUSB communication cable
• 1xPC software CD
• 1xCarrying bag
• 1xEnglish user manual
• 1xGift box (individual packaging)