The UNI-T UT622A handheld LCR meter delivers laboratory-grade measurement precision in a portable, field-ready package for electronics professionals. Featuring an exceptional measurement accuracy of up to 0.1%, this professional-grade instrument provides reliable inductance, capacitance, and resistance measurements across multiple test frequencies. The intuitive 2.8-inch TFT LCD display with high-brightness white backlight ensures clear visibility in any working environment, while the large-capacity rechargeable lithium polymer battery supports up to 8 hours of continuous operation for extended testing sessions. Whether you're working in quality control, component verification, or field maintenance, the UT622A combines accuracy, convenience, and reliability in a compact, ergonomic design perfect for both bench and field applications.
The UNI-T UT622A delivers exceptional measurement accuracy of up to 0.1%, providing engineers and technicians with laboratory-grade precision in a portable instrument. The meter supports wide measurement ranges including inductance from 0.01μH to 99.999H, capacitance from 0.00pF to 99.999mF, and resistance/impedance from 0.0000Ω to 9.9999MΩ. This impressive range and accuracy make the UT622A suitable for testing components in various applications, from consumer electronics to industrial equipment maintenance. The constant 100Ω output impedance ensures measurement stability and consistency across different test frequencies and component types.
The UT622A offers comprehensive component characterization with both primary and secondary parameter measurements. Primary parameters include inductance (L), capacitance (C), resistance (R), and impedance (Z), while secondary parameters include dissipation factor (D), quality factor (Q), phase angle (θ), and equivalent series resistance (ESR). This multi-parameter capability allows for thorough component analysis, identifying not only basic values but also quality indicators and equivalent circuit characteristics. The auto LCR function automatically identifies component type, streamlining the testing process and improving workflow efficiency in sorting and verification applications.
With four selectable test frequencies (100Hz, 120Hz, 1kHz, and 10kHz), the UT622A adapts to various component testing requirements. The 120Hz and 1kHz frequencies are ideal for standard capacitor testing, while 10kHz improves accuracy for small inductance measurements. The three test signal levels (0.1Vrms, 0.3Vrms, and 1Vrms) allow testing of voltage-sensitive components like ceramic capacitors or testing components under conditions closer to actual operating parameters. The selectable series/parallel equivalent mode ensures accurate modeling of component behavior in different circuit configurations, providing more relevant measurements for specific applications.
The UT622A includes features designed for production and quality control environments. The adjustable tolerance range (1%-20%) with LED pass/fail indication enables rapid component sorting without constant reference to the display. The red/green LED indicators provide clear visual feedback, accelerating inspection processes and reducing operator fatigue. With three test speeds available, users can balance measurement speed and accuracy according to application requirements. The data hold and recording functions facilitate documentation of measurement results, while the open/short circuit correction capability ensures measurement accuracy by compensating for test fixture parasitic effects.
In electronics manufacturing environments, the UNI-T UT622A serves as an essential tool for component verification and quality assurance. Production engineers can quickly verify incoming components against specifications, ensuring they meet design requirements before assembly. The tolerance sorting function with LED indication streamlines the screening process, allowing technicians to rapidly identify out-of-spec components. The meter's portability enables spot-checking at multiple points along the production line, while its accuracy ensures reliable quality verification. For small to medium production operations, the UT622A offers an economical alternative to automated test equipment for component validation.
Maintenance technicians benefit from the UT622A's portable design and extended battery life when diagnosing equipment issues in the field. The meter's comprehensive measurement capabilities allow technicians to verify suspicious components without removal from circuit boards when possible, or accurately test removed components to confirm failures. The bright display with white backlight ensures visibility in poorly lit maintenance environments, while the rugged design withstands the demands of field service work. With its auto LCR function and intuitive interface, the UT622A enables quick component testing even in challenging field conditions, reducing equipment downtime and improving service efficiency.
In educational settings and electronics laboratories, the UNI-T UT622A provides students and researchers with a versatile instrument for component characterization and circuit analysis. The ability to measure both primary and secondary parameters helps students understand component behavior beyond basic values, exploring concepts like dissipation factor and phase relationships. The multiple test frequencies enable investigation of frequency-dependent component characteristics, supporting both basic education and advanced research. The meter's USB connectivity and SCPI command set further enhance its utility in automated laboratory testing setups, allowing integration with measurement systems and data collection for analysis.
| Parameter | Specification |
|---|---|
| Accuracy | Up to 0.1% |
| Test Frequency | 100Hz, 120Hz, 1kHz, 10kHz |
| Test Level | 0.1Vrms, 0.3Vrms, 1Vrms |
| Output Impedance | 100Ω |
| Primary Parameters | L/C/R/Z |
| Secondary Parameters | D/Q/θ/ESR |
| Auto LCR | Yes |
| Test Ports | Three-terminal test jacks, five-terminal test sockets |
| 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 |
| L Range | 0.01μH~99.999H |
| C Range | 0.00pF~99.999mF |
| Z/R Range | 0.0000Ω~9.9999MΩ |
| 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 | All UT622 Series |
| UT-SC | Soft Carrying Case | All UT622 Series |
| UT-SMD | SMD Component Test Fixture | 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 |
| L Range | 0.01μH~99.999H | 0.01μH~99.999H | 0.01μH~99.999H |
| C Range | 0.00pF~99.999mF | 0.00pF~99.999mF | 0.00pF~99.999mF |
| Z/R Range | 0.0000Ω~9.9999MΩ | 0.0000Ω~9.9999MΩ | 0.0000Ω~9.9999MΩ |
| ESR Range | 0.0000Ω~999.99Ω | 0.0000Ω~999.99Ω | 0.0000Ω~999.99Ω |
| Display | 2.8\" TFT LCD (320×240) | 2.8\" TFT LCD (320×240) | 2.8\" TFT LCD (320×240) |
| Battery | 3.7V 1800mAh Li-Poly | 3.7V 1800mAh Li-Poly | 3.7V 1800mAh Li-Poly |
| Charging | Mini-USB 5V 1A | Mini-USB 5V 1A | Mini-USB 5V 1A |
| Weight | 420g | 420g | 420g |
| Size | 93mm × 192mm × 44mm | 93mm × 192mm × 44mm | 93mm × 192mm × 44mm |
Different components show varying characteristics at different frequencies, making multiple test frequencies essential for comprehensive component analysis. The 100Hz and 120Hz frequencies are industry standards for electrolytic capacitor testing, with 120Hz being the common ripple frequency in power supplies. The 1kHz frequency is ideal for general-purpose testing of most passive components and matches common audio frequency testing requirements. The 10kHz frequency improves measurement accuracy for low-value inductors and high-frequency components. This versatility allows the UT622A to characterize components across various operating conditions, providing insights into frequency-dependent behavior critical for circuit design and troubleshooting.
The Auto LCR function automatically identifies whether the connected component is an inductor (L), capacitor (C), or resistor (R) without manual selection, significantly streamlining the testing process. When a component is connected, the meter analyzes the impedance characteristics and selects the appropriate measurement mode, displaying the most relevant parameters. This automation reduces operator error and accelerates testing when working with mixed component types, such as during board repair or component sorting. For production environments, this feature minimizes training requirements and improves throughput by eliminating the need to manually configure the instrument for each component type.
