UNI-T UT71E Intelligent Digital Multimeters
The UNI-T UT71E is the flagship model in the UT71 series of intelligent digital multimeters, marrying precision measurement with advanced usability. Housed in a robust, ergonomically contoured case, the UT71E offers a generous 4¾-digit main display and dual 4,000-count secondary displays, ensuring that readings remain crisp and legible even in low-light or fast-changing conditions. A variable backlight can be toggled between two brightness levels or set to switch off automatically, balancing visibility with battery conservation .
Internally, the UT71E employs true RMS circuitry across its voltage and current ranges, affording accurate readings on both sinusoidal and distorted waveforms. This accuracy is complemented by an intelligent limit-setting function: users can define upper and lower thresholds, and the meter will audibly and visually alert whenever measurements stray beyond these bounds—an invaluable safeguard during mass-production testing or system commissioning . Under the hood, a high-speed microprocessor orchestrates auto-ranging, peak-hold capture, and a fast-responding analog bar-graph, delivering both detailed readouts and an intuitive, real-time sense of signal behavior.
. Power management is similarly polished: the meter will automatically shut off after an idle interval (customizable via its setup menu), and a low-battery icon prompts timely replacement of its single 9 V battery.
Physically, the UT71E is designed for both bench and field use. Rated CAT III 1000 V and CAT IV 600 V, it is built to withstand the demands of industrial environments. A knurled rotary switch, tactically separated function buttons, and a rigid tilt-stand combine to make measurements both rapid and comfortable. In the UT71E, UNI-T has crafted a tool that transcends basic electrical measurement—delivering intelligent, connected, and reliable performance for today’s complex testing needs.
Features:
- True RMS measurement with high display count: Ensures accurate AC readings even on non-sinusoidal waveforms, dual 4,000-count secondary displays for maximum resolution and clarity.
- Mis-plug alarm: Audible and visual warning if test leads are inserted into incorrect terminals, helping prevent measurement errors and instrument damage.
- MAX/MIN/REL modes: Built-in functions to capture maximum, minimum, or relative (delta) values over time, with audible alerts when readings exceed predefined thresholds.
- Selectable Auto or Manual ranging: Automatically selects the optimal measurement range for ease of use, or lets you lock in a fixed range when needed for more stable readings.
- Data logging: Internal memory stores up to 100 readings (UT71E), which can be recalled on-device or sent via USB to the UNI-T Smart Measure App for analysis and reporting.
- Auto power-off & backlight: Conserves battery life by automatically shutting down after a user-defined idle period and by switching the display backlight off after a set timeout, backlight can also be manually toggled between two brightness levels.
General Specifications:
| Specification | Details |
|---|---|
| Safety Category: | CAT III 1000 V, CAT IV 600 V |
| Display: | 4¾-digit (40 000-count) primary; two 4 000-count secondaries; 40-segment bar-graph (10 updates/sec) |
| Backlight: | Two brightness levels |
| Dimensions: | 177 × 85 × 40 mm |
| Operating/Storage Temp: | Operating: 0 °C – 40 °C; Storage: –10 °C – 50 °C; ≤ 75 % RH @ 0–30 °C, ≤ 50 % RH @ 30–40 °C |
| Power: | 9 V battery (NEDA 1604/6F22/006P), auto-power-off, low-battery indicator |
Electrical Measurement:
| Function | Range | Resolution | Accuracy (typ.) |
|---|---|---|---|
| DC Voltage: | 0 – 1000 V | 0.1 mV | ±(0.025 % + 5 digits) |
| AC Voltage: | 0 – 1000 V (True RMS) | 0.1 mV | ±(0.4 % + 30 digits) |
| DC Current: | 0 – 10 A (5–10 A for 10 s) | 0.1 mA | ±(0.1 % + 15 digits) |
| AC Current: | 0 – 10 A (True RMS) | 0.1 mA | ±(1.5 % + 20 digits) |
| Resistance: | 0 – 40 MΩ | 0.01 Ω | ±(0.3 % + 8 digits) |
| Capacitance: | 0 – 40 mF | 0.1 nF – 0.1 mF | ±(1.5 % + 20 digits) |
| Frequency: | 0 – 400 MHz | 0.001 Hz – 0.01 MHz | ±(0.1 % + 15 digits) |
| Temperature: | –40 °C – 1000 °C | 0.1 °C | ±(0.15 % + 8 digits) |
| Data Store: | Up to 100 readings | — | — |
Power Measurement:
| Parameter | Range | Resolution | Accuracy (typ.) |
|---|---|---|---|
| Active Power (W): | 0 – 2500 W | 0.1 W | ±(2 % + 10) |
| Apparent Power (VA): | 0 – 2500 VA | 1 VA | ±(1 % + 10) |
| Power Factor (cos φ): | 0.000 – 1.000 | 0.001 | ±(2 % + 10) |
| Voltage Input: | AC 50 – 250 V | — | |
| Current Input: | Up to 10 A (fused) | — |
Applications:
- Electronics design & troubleshooting.
- Factory automation & production-line testing.
- Electrical distribution & panel work.
- Field service & maintenance.
- Power-consumption analysis.
- Data-logging & trend analysis.
Package Include:
- 1x English Operating Manual
- 1x Test Lead
- 1x K-Type (nickel chromium–nickel silicon) point-contact temperature probe (for ≤ 230 °C)
- 1x USB interface cable
- 1x UNI-T Documents Download Operation Guide
- 1x Carrying Bag
- 1x Power Adaptor
- 1x 9 V Battery (NEDA 1604/6F22/006P)
