The UNI-T UT622E handheld LCR meter represents the pinnacle of portable component testing technology, delivering comprehensive measurement capabilities for demanding electronics professionals. As the flagship model in the UT622 series, this advanced instrument combines exceptional 0.1% accuracy with an extended frequency range up to 100kHz and dedicated DC resistance measurement. The high-speed measurement capability of up to 20 times per second accelerates testing workflows, while the crisp 2.8-inch TFT LCD display with high-brightness white backlight ensures perfect visibility in any working environment. Powered by a long-lasting 1800mAh lithium polymer battery supporting 8 hours of continuous operation, the UT622E provides uncompromising measurement performance for laboratory precision in field-ready form factor.
The UNI-T UT622E excels in comprehensive component characterization with its extended parameter measurement capabilities. Beyond the standard inductance (L), capacitance (C), and resistance (R) measurements, the UT622E adds dedicated DC resistance (DCR) testing for complete component analysis. This capability is particularly valuable for inductor characterization, allowing separate measurement of winding resistance independent from AC impedance. The instrument provides both primary parameters (L/C/R/Z/DCR) and secondary parameters (D/Q/θ/ESR), enabling thorough evaluation of component quality and behavior. With measurement ranges spanning from 0.01μH to 99.999H for inductance, 0.00pF to 99.999mF for capacitance, and 0.01mΩ to 20.000MΩ for DC resistance, the UT622E handles virtually any passive component testing requirement with exceptional precision.
With five selectable test frequencies (100Hz, 120Hz, 1kHz, 10kHz, and 100kHz), the UT622E provides the most comprehensive frequency coverage in the UT622 series. The extended 100kHz capability enables accurate characterization of high-frequency components and materials, crucial for RF circuit design and telecommunications applications. Different components exhibit varying characteristics across frequency ranges—electrolytic capacitors typically tested at 120Hz, general components at 1kHz, and high-frequency components at 10kHz and above. This versatility makes the UT622E suitable for diverse applications from power supply filtering to RF circuit design. Combined with three selectable test signal levels (0.1Vrms, 0.3Vrms, and 1Vrms), the instrument delivers accurate measurements under conditions closely matching actual operating parameters.
The UT622E features exceptional measurement speed with up to 20 tests per second in fast mode, ideal for production environments and batch testing applications. This rapid acquisition capability reduces testing time while maintaining measurement accuracy, improving throughput in quality control and component sorting operations. Users can select from three speed settings (fast, medium, slow) for both AC and DCR measurements, balancing speed and precision according to application requirements. The fast mode excels in production screening where throughput is critical, medium mode provides balanced performance, and slow mode maximizes accuracy for precision measurements and research applications. This flexibility makes the UT622E equally suitable for high-volume testing and detailed component analysis.
The UT622E delivers exceptional measurement accuracy through multiple technical refinements. The professional four-terminal Kelvin test leads (UTR-L100k-H) included with the instrument minimize lead resistance effects, particularly important for low-impedance measurements. The open/short clearing correction function compensates for parasitic impedances in test fixtures and leads, establishing a precise zero reference for subsequent measurements. The constant 100Ω output impedance ensures consistent test signal application across varying component values and frequencies. Together with the instrument's inherent 0.1% measurement accuracy and high resolution (minimum 0.0001 display resolution), these features provide laboratory-grade measurement precision in a portable form factor, eliminating the compromise typically required between accuracy and portability.
In R&D environments, the UNI-T UT622E serves as an essential tool for component characterization and materials analysis. Design engineers can thoroughly evaluate component behavior across multiple frequencies from 100Hz to 100kHz, gaining insights into frequency-dependent characteristics critical for circuit optimization. The dedicated DCR measurement capability allows precise characterization of inductor DC resistance separate from AC impedance, essential for power electronics design and efficiency calculations. The instrument's high precision and comprehensive parameter measurement enable detailed component evaluation during design phases, helping engineers select optimal components and verify their performance under various operating conditions. The USB connectivity with SCPI command set facilitates integration with automated test systems for complex characterization procedures and documentation.
The UT622E excels in production testing environments, where its high-speed measurement capability and comprehensive parameter analysis enhance quality control processes. Quality engineers can rapidly verify incoming components against specifications using the tolerance sorting function with clear pass/fail LED indication. The ability to test at multiple frequencies ensures components meet requirements across their intended operating range, not just at a single test point. For inductor manufacturing, the dedicated DCR measurement provides critical information about winding quality and consistency. The instrument's portability allows testing at multiple points in the production process, from incoming inspection to final quality verification, while the high measurement speed of up to 20 times per second maximizes testing throughput without sacrificing accuracy.
Field service technicians benefit from the UT622E's combination of comprehensive measurement capabilities and portable design. When troubleshooting complex electronic systems, the ability to thoroughly characterize components across multiple parameters and frequencies helps identify subtle degradation and failure modes that might be missed by simpler testing tools. The dedicated DC resistance measurement is particularly valuable for evaluating motor windings, transformers, and other inductive components common in industrial equipment. The instrument's extended battery life supports full-day operation without recharging, essential for remote site work. The bright display with white backlight ensures visibility in poorly lit maintenance environments, while the rugged construction withstands the demands of field service work.
| Parameter | Specification |
|---|---|
| Accuracy | Up to 0.1% |
| Test Frequency | 100Hz, 120Hz, 1kHz, 10kHz, 100kHz |
| Test Level | 0.1Vrms, 0.3Vrms, 1Vrms |
| Output Impedance | 100Ω |
| Primary Parameters | L/C/R/Z/DCR |
| Secondary Parameters | D/Q/θ/ESR |
| Auto LCR | Yes |
| Test Ports | Three-terminal test jacks, five-terminal test sockets |
| AC Parameters Test Speed | Fast (20 times/s), medium (5 times/s), or slow (2 times/s) |
| DCR Test Speed | Fast (20 times/s), medium (5 times/s), or slow (2 times/s) |
| Range Mode | Auto/Hold |
| Tolerance Range | 1%~20% |
| Equivalent Mode | Series/Parallel |
| Clearing Correction | Open/Short circuit |
| Communication Interface | Mini-USB with SCPI command set |
| LED Alarm | Pass: green; fail: red |
| Maximum Primary Parameters Reading | 99999 |
| Minimum Resolution | 0.0001 |
| Maximum Accuracy | 0.10% |
| L Range | 0.01μH~99.999H |
| C Range | 0.00pF~99.999mF |
| Z/R Range | 0.0000Ω~9.9999MΩ |
| DCR Range | 0.01mΩ~20.000MΩ |
| ESR Range | 0.0000Ω~999.99Ω |
| D Range | 0.0000~9.9999 |
| Q Range | 0.0000~99999 |
| θ Range | -179.9°~179.9° |
| Temperature Coefficient | 0.1× (specified accuracy)/°C (0°C18°C or 28°C40°C) |
| Power | 3.7V 1800mAh lithium polymer battery |
| Charging | Mini-USB: 5V, 1A |
| Display | 2.8" TFT LCD 320×240 |
| Battery Life | Approximately 8 hours |
| Product Weight | 420g |
| Product Size | 93mm × 192mm × 44mm |
| Model | Description | Compatibility |
|---|---|---|
| UTR-001 | Short Circuit Board | All UT622 Series |
| UTR-002 | Alligator Clip Test Leads with Rubber Plugs | All UT622 Series |
| UTR-L100k-H | Four-terminal Kelvin Test Leads (included) | All UT622 Series |
| UT-SC | Soft Carrying Case | All UT622 Series |
| UT-SMD | SMD Component Test Fixture | All UT622 Series |
| UT-TL | Tweezers Test Leads for SMD Components | All UT622 Series |
| Parameter | UT622A | UT622C | UT622E |
|---|---|---|---|
| Accuracy | Up to 0.1% | Up to 0.1% | Up to 0.1% |
| Test Frequency | 100Hz, 120Hz, 1kHz, 10kHz | 100Hz, 120Hz, 1kHz, 10kHz, 100kHz | 100Hz, 120Hz, 1kHz, 10kHz, 100kHz |
| Test Level | 0.1Vrms, 0.3Vrms, 1Vrms | 0.1Vrms, 0.3Vrms, 1Vrms | 0.1Vrms, 0.3Vrms, 1Vrms |
| Primary Parameters | L/C/R/Z | L/C/R/Z | L/C/R/Z/DCR |
| Secondary Parameters | D/Q/θ/ESR | D/Q/θ/ESR | D/Q/θ/ESR |
| DCR Measurement | No | No | Yes |
| Auto LCR | Yes | Yes | Yes |
| Clearing Correction | Open/Short circuit | Open/Short circuit | Open/Short circuit |
| Max Display | 99999 | 99999 | 99999 |
| Resolution | 0.0001 | 0.0001 | 0.0001< |
