UT8803E 3.8 Digit Classic-Series Bench Digital Multimeter

The UNI-T UT8803E Classic-Series Bench Digital Multimeter is a 3⅚-digit auto-ranging meter with True-RMS AC measurement, a 5,999-count display, and an extended measurement function set that includes inductance to 100 H and capacitor D/Q parameters in addition to the standard voltage, current, resistance, capacitance, diode, continuity, frequency, and temperature functions.

For electronics labs and service-bench work that needs reliable component characterization beyond basic resistance and capacitance — transformer winding inductance, motor stator verification, resonant-circuit Q measurement, RF choke validation — the UT8803E delivers the function coverage of a dedicated LCR-light meter inside a general-purpose bench DMM. Thermocouple temperature measurement and USB-Device PC connectivity are standard.

Key Features

UNI-T UT8803E Details

3⅚-Digit Display and 0.3% Accuracy

The UT8803E delivers a 3⅚-digit 5,999-count display with 0.3% basic DC voltage accuracy. DC voltage resolution is 0.01 mV and DC current resolution is 0.1μA — covering the precision needed for component validation, prototype bring-up, and general bench measurement. Resistance resolution is 0.1Ω.

Measurement Function Coverage

Measurement coverage includes AC/DC voltage, AC/DC current, resistance, capacitance, diode, continuity, frequency, duty cycle, temperature (thermocouple), inductance to 100 H, D/Q parameters. Capacitance measurement extends to 60 mF. Frequency counter range is 600 Hz – 20 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.

Inductance and D/Q Parameter Measurement

Inductance measurement to 100 H covers transformer windings, motor stator inductance, RF choke verification, and general inductor characterization. The EQR key during capacitance or inductance measurement displays D (dissipation factor) and Q (quality factor) — useful for assessing capacitor quality and inductor self-resonance behavior without a dedicated LCR meter.

Reference Value (REL) and Statistics

The Reference Value (REL) function captures a baseline reading and displays subsequent measurements as deviations from that baseline. Combined with max/min statistics, this supports relative-comparison workflows useful for batch screening, drift studies, and component matching.

Temperature Measurement

Thermocouple temperature measurement covers the range -40°C to 1000°C with built-in cold-end compensation. Suitable for component-thermal-test, environmental monitoring, and process-temperature verification.

Connectivity and Remote Control

USB-Device connection to a host PC enables real-time historical-data viewing, trend-chart display, and configuration backup through the included software. For workbench logging and remote monitoring of long-running tests where a separate data logger would be overkill, USB-Device provides the path.

Applications

Electronics Service and Component Validation

• Comprehensive measurement coverage including inductance to 100 H and D/Q parameters — useful for transformer, motor, and inductor screening.
• True-RMS AC measurement on switching-supply outputs, dimmer-driven loads, and variable-frequency-drive circuits.
• Thermocouple temperature monitoring during burn-in and thermal characterization.
• Auto-ranging across voltage, current, resistance, and capacitance reducing operator workflow friction.

R&D Prototype Bring-Up

• 3⅚-digit precision on prototype voltage rails, current draws, and signal lines.
• Component characterization across L, C, and R within a single instrument.
• Capacitor and inductor quality-factor (Q) measurement for resonant-circuit design validation.
• Frequency counter to 20 MHz on clock and oscillator outputs.

Teaching Labs and Hobbyist Workbench

• Auto-ranging operation suitable for entry-level coursework where students focus on measurement concepts rather than range selection.
• Component-test workflows (diode, capacitance, inductance) supporting introductory circuit-theory labs.
• USB-Device connection for PC-based historical-data logging during long-duration experiments.
• Stable benchtop form factor at a teaching-budget price point.

Accessories and Family Options

Included with Every Unit

• UT8803E 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

• Type-K thermocouple probe — for temperature measurement across the supported range.

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. (this product)
• 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.
• 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