Power Meters
Digital power meters measure voltage, current, real power, apparent power, power factor, frequency, energy, and harmonic content across single-phase and three-phase AC and DC circuits — the bench instrument for power-supply characterization, motor-drive efficiency analysis, solar-inverter test, and energy-consumption measurement. The UNI-T catalog covers single-phase 600 V and 1000 V meters in the UTE310 and UTE9800+ series, plus three-phase UTE323 high-precision meters for multi-load efficiency work. Harmonic analysis through the 50th order is available on the UTE310 and UTE9811+ variants. GPIB variants drop into legacy IEEE-488 automation.
Power Meters
| Voltage Range | Current Range | Frequency Range | Accuracy | Mode | Connectivity | Display | |
|---|---|---|---|---|---|---|---|
|
75mV–600V | 2.5mA–20A | DC, 0.1Hz–300kHz | ±(0.1% rdg.+ 0.05% F.S.) | DC, RMS, VMean | LAN, USB, GPIB/RS-232 | 5'' TFT LCD |
| UTE323 3-Channel AC/DC Power Meter | |||||||
|
75mV–1000V | 25uA–50A | DC, 0.1Hz~300kHz | ±0.1% rdg.+ 0.05% F.S. | DC, TRMS, MN | LAN, USB, RS-232/GPIB(optional) | 4.4" TFT |
| UTE310 AC/DC Single-Phase Power Meters | |||||||
|
0.5V–600V | 0.05mA–20.0A | 40Hz–400Hz | ± (0.4% reading + 0.1 range + 1 digit) | AC, DC, AC+DC | RS-232/RS-485 | VA LCD |
| UTE9800+ AC/DC Single Phase Power Meters | |||||||
Accessories & Options
Buying Guide
UNI-T Power Meters — Buyer's Guide
About This Collection
UNI-T's power meter catalog covers 8 active benchtop models across three product families, from compact AC panel meters for production lines and energy monitoring to single-phase precision instruments for R&D and 3-channel meters for poly-phase work. Coverage includes voltage, current, true power, power factor, frequency, harmonic distortion, peak values, and crest factor — with channel count, accuracy class, and measurement resolution as the primary differentiators.
For current transformers, voltage probes, and other accessories, see Power Meter Accessories.
What Every UNI-T Power Meter Shares
Decision: Which Family Do You Need?
UTE310 — Precision Single-Phase
UTE323 — 3-Channel
UTE9800+ — Compact AC Panel
How They Differ
The three families serve different workloads. Use this matrix to confirm which one fits the measurement you need:
| Capability | UTE310 / 310G / 310H / 310HG | UTE323 / 323G | UTE9800+ family |
|---|---|---|---|
| Channels | 1 | 3 (independent) | 1 (AC) |
| Measurement modes | AC, DC, AC+DC | AC, DC, AC+DC | AC |
| Voltage range | 0 – 600 V (310/310G), 0 – 1000 V (310H/310HG) | 0 – 600 V | 0 – 600 V (model-dependent) |
| Current resolution | 0.1 µA (precision class) | 0.1 µA (precision class) | mA-class |
| Harmonic analysis | Yes — full FFT to 50th order | Yes — full FFT to 50th order | Limited (panel-class) |
| GPIB interface | Optional (G suffix) | Optional (G suffix) | No |
| Form factor | Benchtop | Benchtop | Compact / panel-mount adjacent |
| Typical use | R&D, calibration, standby power | 3-phase systems | Production, energy monitoring |
Complete Model Matrix
| Model | Family | Channels | Notable spec |
|---|---|---|---|
| UTE310 | Precision single-phase | 1 | 600 V class, µA current resolution |
| UTE310G | Precision single-phase | 1 | 600 V class + GPIB |
| UTE310H | Precision single-phase | 1 | 1000 V class, µA current resolution |
| UTE310HG | Precision single-phase | 1 | 1000 V class + GPIB |
| UTE323 | 3-channel | 3 | 3-phase / multi-source benchtop |
| UTE323G | 3-channel | 3 | 3-channel + GPIB |
| UTE9802+ | Compact AC panel | 1 (AC) | Compact form factor, AC-only |
| UTE9806+ | Compact AC panel | 1 (AC) | Compact form factor, AC-only |
| UTE9811+ | Compact AC panel | 1 (AC) | Compact form factor, AC-only |
Recommended Configurations
R&D · Single-Phase Precision
Choose: UTE310 or UTE310H
Pick by voltage ceiling: UTE310 (600 V) for low-voltage electronics and standby power work; UTE310H (1000 V) for line-voltage equipment, EV chargers, and inverter input characterization. Add the G suffix if your bench is automated and you need GPIB.
3-Phase Motor / Inverter Test
Choose: UTE323 or UTE323G
Three independent channels measure all three phases simultaneously without channel switching. Calculate poly-phase total power, balance ratios, and efficiency directly. UTE323G adds GPIB for ATE racks.
Production-Line Energy Monitoring
Choose: UTE9802+ / 9806+ / 9811+
Compact AC panel meters for hardwired AC monitoring on factory floors, plant rooms, or any installation where a slim chassis matters more than full DC/AC composite capability. Pick the model that matches your voltage and current rating.
Power Quality & Harmonic Analysis
Both precision families provide full harmonic FFT to the 50th order with THD, individual harmonic amplitude, and crest factor measurements. Single-source: UTE310H. Three-phase system: UTE323. The compact UTE9800+ panel meters do not provide full harmonic analysis.
Why Choose UNI-T Power Meters?
Microamp resolution on the precision line
UTE310 and UTE323 resolve current down to 0.1 µA. Standby power measurement, leakage characterization, and low-bias circuit work all fit on the same instrument that measures full-load conditions — no second meter, no probe change.
True 3-channel benchtop
UTE323 is a single chassis with three independent measurement channels — not a multiplexed front end. Three phases captured simultaneously, with no sampling skew between them.
AC, DC, and AC+DC under one instrument
Precision UTE310 and UTE323 measure pure AC, pure DC, and composite AC+DC waveforms. Switching supplies, inverter outputs, and battery-backed circuits don't need a mode change at the panel and a separate instrument.
5-year warranty
Three years standard plus two free with registration on every benchtop meter. Longer than the 2-year and 3-year warranties typical at this price tier.
FAQ
What's the difference between UTE310 and UTE310H?
Voltage range. UTE310 (and UTE310G) measure up to 600 V class. UTE310H (and UTE310HG) measure up to 1000 V class. Same current resolution, same accuracy class, same harmonic analysis. Pick by what voltage you measure: low-voltage electronics and standby work fits inside 600 V; line-voltage three-phase, EV chargers, and inverter input circuits typically need 1000 V headroom.
Do I need the G (GPIB) suffix?
Only if you're integrating into an existing GPIB-based ATE rack or running automated test fixtures that use IEEE-488. Every UTE310 and UTE323 already ships with USB-Device standard, and LAN is supported on the precision line. If your automation strategy is USB or LAN, save the cost on the G option.
Can a UTE9800+ panel meter replace a UTE310 on my bench?
Only if your work is AC-only line monitoring and you don't need DC, AC+DC composite, full harmonic FFT to the 50th order, or microamp current resolution. The UTE9800+ family is engineered for production and energy-monitoring deployment, not R&D characterization. If you're choosing between the two for an R&D bench, the UTE310 is the right answer almost every time.
How accurate are these meters?
Accuracy varies by parameter, range, and family. Precision UTE310 and UTE323 are calibration-class instruments suitable for laboratory reference work; UTE9800+ panel meters are production-grade. Check each individual model page for the basic voltage / current / power / power factor accuracy specifications, including frequency-dependent terms where applicable.
Does the 3-channel UTE323 work as three independent single-channel meters?
Yes. The three channels are independently configurable for range, mode, and integration time, and each channel reports its measurements independently in addition to the calculated 3-phase totals. You can run three unrelated single-source measurements on one chassis, or three related phases of a poly-phase system. The trade-off versus a single-channel UTE310 is voltage ceiling: UTE323 covers 600 V, the UTE310H is the choice when you need the 1000 V class.
What software ships with these meters?
PC application included free for data logging, configuration management, harmonic visualization, and remote control. SCPI command reference is published on the product page and supports any third-party tool that drives the instrument over USB, LAN, or GPIB.
What's in the 5-year warranty?
Parts, labor, and return shipping for 3 years standard plus 2 additional years when you register the instrument within 90 days of purchase. Calibration is a separate service.
