UT622E Advanced LCR Meter
The UT622E is the top of the UT622 line: a professional-grade handheld LCR meter that measures to 100 kHz and adds DC resistance (DCR) from 0.01 mΩ to 20 MΩ — so the same instrument characterizes a component's AC behaviour and its DC resistance, which matters for windings, contacts, and low-value parts. It measures L, C, R, Z, ESR, and D/Q at 0.1% basic accuracy.
With a 4-wire Kelvin connection, open/short correction, series/parallel modelling, and tolerance sorting, the UT622E suits power-electronics design and lab work, on a portable Li-polymer-powered platform.
Beyond the full AC LCR set, the UT622E measures DC resistance from 0.01 mΩ to 20 MΩ. Reading DCR alongside impedance and ESR characterizes windings, contacts, and low-value components more completely than an AC-only meter — a meaningful step for power-electronics work.
A 4-wire Kelvin connection separates the drive and sense paths so lead and contact resistance don't corrupt the reading — essential for low-impedance components where milliohm-level errors matter. Open and short correction nulls fixture and lead effects before a measurement run.
Beyond L, C, and R, the meter reads impedance (Z), equivalent series resistance (ESR), dissipation factor (D), and quality factor (Q), with series or parallel equivalent-circuit modelling and impedance phase from −179.9° to 179.9° — the parameters needed to characterize a part, not just read its nominal value.
A tolerance-comparison function sorts parts pass/fail from 1% to 20% bands at up to 20 measurements per second, suited to incoming inspection and small-batch QC. Results log to 500 groups and transfer over USB.
A 2.8-inch color display and a rechargeable Li-polymer pack good for about 8 hours make the UT622E a capable bench and lab instrument that travels.
| UT622A | UT622C | UT622E | |
|---|---|---|---|
| Max test frequency | 10 kHz | 100 kHz | 100 kHz |
| DC resistance (DCR) | — | — | 0.01 mΩ – 20 MΩ |
| Kelvin test leads | — | Included | Included |
Power-electronics component design and verification; characterization needing both AC parameters and DC resistance; lab and R&D measurement; and production QC with tolerance sorting.
DC resistance (DCR) measurement from 0.01 mΩ to 20 MΩ, alongside the same 100 kHz AC LCR capability.
DCR characterizes windings, contacts, and low-value parts at DC, complementing the AC parameters for a fuller picture.
0.1% basic accuracy across the LCR measurement set.
| Frequency | 100 Hz, 120 Hz, 1 kHz, 10 kHz, 100 kHz |
| Capacitance | 0.00 pF to 99.999 mF |
| Inductance | 0.00 µH to 99.999 H |
| Impedance | 0.0000 Ω to 9.9999 MΩ |
| ESR Range | 0.0000 Ω to 999.99 Ω |
| Max Resistance | 20 MΩ (DCR: 0.01 mΩ to 20.000 MΩ) |
| Accuracy | 0.10% |
| D/Q Range | D: 0.0000 to 9.9999; Q: 0.0000 to 99999 |
| Impedance Phase Range | -179.9° to 179.9° |
| Test Signal Level | 0.1 Vrms, 0.3 Vrms, 1 Vrms |
| Output Impedance | 100 Ω |
| Tolerance Range | 1% to 20% |
| Equivalent Circuit | Series, Parallel |
| Auto Ranging | Yes |
| Auto LCR | Yes |
| Open Short Correction | Yes |
| Test Method | 4-Wire Kelvin |
| Data Logging | Yes |
| Fastest Test Rate | 20 times/s |
| Interface | Mini-USB |
| Data Storage | 500 groups |
| Display Size | 2.8in |
| Display Type | TFT LCD |
| Display Resolution | 320×240 |
| Battery | 3.7 V 1800 mAh Li-polymer |
| Battery Life | 8 hours |
| Ambient Temperature Range | 0 °C to 40 °C |
| Weight | 420 g |
| Dimensions | 93 × 192 × 44 mm |
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