UT181A TRMS Datalogging Digital Multimeter

The UT181A is a 60,000-count True-RMS multimeter built around recording and reviewing measurements over time. It logs readings, captures trend graphs on its own display, and pairs to a Bluetooth app — so an intermittent fault or a slow drift you'd miss with spot readings shows up as a curve. It's rated CAT III 1000 V / CAT IV 600 V.

Measurement covers AC/DC voltage and current to 1000 V and 10 A, combined AC+DC, resistance to 60 MΩ, capacitance to 60 mF, frequency, temperature to 1000 ℃, plus a low-pass filter, dBV/dBm, conductance, duty cycle, and peak hold. A 1 m drop rating keeps it field-ready. It's backed by UNI-T's nearly 40 years of test-meter manufacturing.

Key Features

• 60,000-count True-RMS measurement
• On-board data logging with trend-graph capture
• Bluetooth app for live readout and transfer
• AC+DC combined measurement; AC/DC to 1000 V and 10 A
• Resistance to 60 MΩ, capacitance to 60 mF, frequency, temperature to 1000 ℃
• Low-pass filter for drive output; dBV/dBm; conductance; duty cycle
• Relative, max/min, peak hold, and data-comparison modes
• USB interface; CAT III 1000 V / CAT IV 600 V; 1 m drop

UT181A Details

Logging & Trend Capture

The UT181A records readings over time and plots them as a trend on its own graphing display, so intermittent faults and slow drift become visible patterns instead of numbers you have to watch. Logged data transfers by USB or the Bluetooth app for analysis and reports.

60,000-Count True-RMS Measurement

High-resolution True-RMS sensing keeps AC accurate on distorted waveforms, and combined AC+DC measurement reads complex signals that pure AC or DC modes miss.

Drive & Signal Tools

A low-pass filter strips high-frequency content so you read the fundamental on a drive output, while dBV/dBm, conductance, and duty cycle cover signal and component work.

Analysis Modes & Field Build

Relative, max/min, peak hold, and data-comparison modes support careful measurement, and a 1 m drop rating with CAT III 1000 V / CAT IV 600 V safety keeps it ready for the field.

Applications

Intermittent-fault hunting where logging beats spot readings; commissioning and acceptance testing that needs a measurement record; drive and signal troubleshooting; and any task where trend capture and data transfer support documentation.

Frequently Asked Questions