Overview

The UNI-T UT8805E Performance-Series Bench Digital Multimeter is a 5½-digit auto-ranging True-RMS meter with 0.015% basic DC voltage accuracy, a 5,000 rdgs/s maximum reading rate, and a 199,999-count display on a 4.3in 480×272 TFT-LCD. SCPI over LAN, RS-232, and USB makes the UT8805E a clean drop-in for automated test setups.

For R&D measurement and small-lab production test where SCPI automation, four-wire (Kelvin) resistance, dual display, and the full math/dB/dBm/Pass-Fail suite matter, the UT8805E delivers the performance jump from general-purpose bench DMM to instrumented test station. Four display modes (Number, Bar Graph, Trend Graph, Histogram), thermocouple and RTD temperature measurement, and 10,000-reading internal storage are standard.

Key Features

UNI-T UT8805E Details

5½-Digit Display and 0.015% Accuracy

The UT8805E delivers a 5½-digit 199,999-count display with 0.015% basic DC voltage accuracy. DC voltage resolution reaches 1μV and DC current resolution reaches 1nA — meeting the spec floor required for low-signal R&D measurement, transducer-output characterization, and reference-source verification. Resistance measurement resolution is 0.1mΩ.

× 4.3-inch TFT-LCD with 199,999-count 5½-digit resolution

Measurement Function Coverage

Measurement coverage includes AC/DC voltage, AC/DC current, resistance, four-wire resistance, capacitance, diode, continuity, frequency, duty cycle, temperature (thermocouple), period. Capacitance measurement extends to 2 mF. Frequency counter range is 20 Hz – 1 MHz.

True-RMS AC Measurement

True-RMS AC measurement delivers correct readings on distorted, non-sinusoidal waveforms — switching-mode power supply outputs, motor-drive currents, dimmed lighting loads, PWM signals — where an average-responding meter would read low. AC voltage and AC current measurements are both True-RMS.

Dual Display

Dual display shows two parameters at once — voltage with frequency, current with frequency, or any compatible primary/secondary pairing — without toggling between menus. For diagnostics on AC sources, switching supplies, and motor drives, this lets you watch the primary measurement and its frequency simultaneously.

× Dual display showing voltage and frequency simultaneously

Math, Statistics, and Pass/Fail

Built-in math includes max/min/average tracking, standard deviation, relative measurement (REL), dB and dBm operations, and configurable limits. Pass/Fail comparison automatically flags out-of-tolerance readings and sounds an alarm. All math operations apply across voltage, current, resistance, capacitance, frequency, and temperature.

× Built-in math: statistics, limits, dB, dBm, and relative operations

Four Display Modes

Four display modes adapt the on-screen presentation to the measurement task: Number for a clean primary reading, Bar Graph for quick visual go/no-go interpretation, Trend Graph for time-series behavior, and Histogram for distribution visualization on repeated samples. Switching is a single-key operation.

× Four display modes: Number, Bar Graph, Trend Graph, and Histogram

4.3-inch TFT-LCD with 480×272 Resolution

The 4.3-inch TFT-LCD displays the full 199,999-count primary reading with secondary parameter and unit annotations at high legibility from typical bench viewing distance. The digitized analog bar graph beneath the primary reading supports rapid trend interpretation when the measurement is changing slowly.

× 4.3-inch TFT-LCD with 199,999-count 5½-digit resolution

5,000 rdgs/s Maximum Reading Rate

Maximum reading rate is 5,000 rdgs/s on the UT8805E. For automated test sequences this means short loop times when stepping through measurement steps under SCPI control. For high-resolution characterization, the same reading rate supports averaging-based noise reduction without slowing the test cadence.

Four-Wire Resistance

Four-wire (Kelvin) resistance measurement eliminates lead and contact resistance from low-resistance readings. For shunt resistors, motor windings, contactor coils, PCB-trace resistance, and any measurement below approximately 100 Ω where lead resistance distorts the result, the four-wire path delivers the accuracy the digit count promises.

Temperature Measurement

Temperature measurement supports thermocouple sensors over the range -270°C to 1820°C with 0.5°C accuracy, plus RTD (thermal-resistance) sensor input for higher-accuracy laboratory measurements. A built-in cold-end compensator is standard, so external reference junctions are not required.

Connectivity and Remote Control

Four host interfaces: LAN, RS-232, USB-Host, and USB-Device. LAN supports VXI-11 for SCPI-over-Ethernet; USB-Device supports USBTMC; RS-232 supports established automated-test scripts and embedded controllers that don't have an Ethernet path. USB-Host accepts a USB flash drive for file import/export. SCPI command set is IEEE-488.2-style and compatible with the mainstream multimeter command set, easing migration from existing test code.

SCPI Command Set and Automation

The UT8805E accepts SCPI commands compatible with the mainstream multimeter command set, easing migration from existing test scripts. Configuration and triggering via SCPI is supported across all measurement functions. Firmware updates are free over the product's lifetime; license unlocks for any future optional features have no expiration. Measurement results return as ASCII or numeric blocks per SCPI conventions.

Applications

R&D Measurement and Characterization

• High-resolution DC voltage and current measurement on bench power rails, sensor outputs, and reference circuits.
• Component characterization across voltage, resistance, capacitance, and temperature within a single bench session.
• Long-term drift studies with timestamped recording to internal storage and post-test export over USB or LAN.
• Four-wire resistance measurement of low-value shunts, PCB traces, and contact resistance.

Production Test and Automated Quality Control

• SCPI-driven automated test sequences with reading rates that keep loop times short on multi-DUT lines.
• Pass/Fail comparison automatically flagging out-of-tolerance units with audible alarm.
• Incoming-inspection batch testing with statistical summary reporting (max, min, average, standard deviation).
• Integration into existing rack-and-stack production environments via LAN (VXI-11) or USB (USBTMC).

Calibration and Metrology Support

• Verification of bench instruments against reference standards using the meter's high resolution and accuracy.
• Periodic in-house verification of secondary standards between formal calibration cycles.
• RTD- and thermocouple-based thermal characterization with cold-end compensation built in.
• Long-duration logging of environmental and reference-source drift for trend analysis.

Specifications

Accessories and Family Options

Included with Every Unit

• UT8805E benchtop digital multimeter
• Standard test lead set
• AC power cord (region-appropriate)
• USB-Device cable for PC connection
• PC software (included; downloadable from uni-trend.com)
• User manual and factory calibration certificate

Recommended Accessories

• Four-wire test lead set — Kelvin-style test leads for low-resistance measurement accuracy.
• Type-K thermocouple probe — for temperature measurement across the supported range.
• Standard 19-inch rack mount kit — for rack-integration in production-test and ATE installations.

Family Members

• UT8802E — Value-tier 4½-digit manual-range bench DMM.
• UT8803E — Classic-tier 3⅚-digit auto-ranging bench DMM with inductance and D/Q.
• UT8804E — Advanced-tier 4⅚-digit bench DMM with data recording and Pass/Fail.
• UT8805E — Performance-tier 5½-digit SCPI bench DMM with four-wire resistance and math. (this product)
• UT8806E — Performance-tier 6½-digit SCPI bench DMM (LAN/RS-232/USB).
• UT8806EG — Performance-tier 6½-digit bench DMM with IEEE-488.2 GPIB (substitutes for RS-232).

Frequently Asked Questions