UNI-T UT622C Handheld LCR Meter | Professional Component Testing Solution

Overview

The UNI-T UT622C handheld LCR meter delivers professional-grade component testing capabilities with exceptional precision and versatility for electronics professionals and researchers. This advanced instrument combines laboratory-quality 0.1% measurement accuracy with an impressive frequency range extending to 100kHz, making it ideal for comprehensive component characterization across diverse applications. The high-performance measurement engine achieves up to 20 measurements per second, dramatically accelerating testing workflows while maintaining measurement integrity. Featuring a brilliant 2.8-inch TFT LCD display with high-brightness white backlight and powered by a robust 1800mAh lithium polymer battery providing 8 hours of continuous operation, the UT622C delivers professional measurement capabilities in a field-portable package.

Key Features

Professional Frequency Coverage - Five precise test frequencies from 100Hz to 100kHz for thorough component analysis across the frequency spectrum

Laboratory-Grade Precision - Achieves up to 0.1% measurement accuracy for research and quality control applications

High-Performance Testing - Maximum measurement rate of 20 tests per second for efficient batch testing and production screening

Comprehensive Parameter Suite - Complete primary parameters (L/C/R/Z) and secondary parameters (D/Q/θ/ESR) for detailed component evaluation

Advanced Kelvin Test System - Professional four-terminal test leads (UTR-L100k-H) included for superior measurement accuracy

Flexible Signal Levels - Three selectable test signal amplitudes (0.1Vrms, 0.3Vrms, 1Vrms) for optimal component characterization

Stable Output Impedance - Consistent 100Ω output impedance across all frequencies ensures reliable measurements

Intelligent Component Recognition - Auto LCR function automatically determines component type for streamlined operation

Precision Tolerance Analysis - Adjustable tolerance range from 1% to 20% with visual LED pass/fail indication

Versatile Circuit Modeling - Series and parallel equivalent circuit modes for accurate component representation

Advanced Compensation - Open/short circuit clearing correction eliminates parasitic effects for maximum precision

PC Connectivity - Standard Mini-USB interface with industry-standard SCPI command support

Portable Professional Design - Compact 93mm × 192mm × 44mm form factor weighing just 420g

UNI-T UT622C Detailed Analysis

Multi-Frequency Component Characterization

The UNI-T UT622C excels in frequency-dependent component analysis with its comprehensive five-frequency testing capability spanning 100Hz to 100kHz. This extended frequency range enables accurate characterization of components across their intended operating conditions, revealing frequency-dependent behaviors critical for circuit design optimization. The 100kHz high-frequency capability is particularly valuable for RF applications, high-speed digital circuits, and advanced materials research where component behavior at higher frequencies significantly differs from low-frequency characteristics. Different component types require specific test frequencies for accurate evaluation: electrolytic capacitors are optimally tested at 120Hz, general components at 1kHz, and high-frequency components benefit from 10kHz and 100kHz testing. This comprehensive frequency coverage makes the UT622C suitable for diverse applications from audio frequency circuits to RF design validation.

High-Speed Professional Testing

The UT622C features exceptional measurement speed capabilities with three selectable test speeds optimized for different applications. The fast mode delivers up to 20 measurements per second, ideal for production environments and high-throughput testing scenarios. Medium speed provides 5 measurements per second, offering balanced performance for general testing applications. Slow mode at 2 measurements per second maximizes measurement stability and accuracy for precision research applications. This flexibility allows users to optimize the balance between measurement speed and precision according to specific requirements. The high-speed capability significantly enhances productivity in manufacturing quality control, component sorting, and batch testing operations while maintaining the measurement accuracy demanded by professional applications.

Advanced Measurement Architecture

The UT622C incorporates sophisticated measurement architecture designed for professional applications. The instrument provides comprehensive parameter measurement including primary parameters (L/C/R/Z) and secondary parameters (D/Q/θ/ESR), enabling thorough component evaluation beyond basic measurements. With measurement ranges spanning from 0.00μH to 99.999H for inductance, 0.00pF to 99.999mF for capacitance, and 0.0000Ω to 9.9999MΩ for resistance, the UT622C handles virtually any passive component testing requirement. The instrument's high resolution (minimum 0.0001 display resolution) combined with 0.1% maximum accuracy provides the measurement precision demanded by research and quality control applications.

Professional Accuracy Enhancement

The UT622C achieves laboratory-grade measurement accuracy through multiple technical innovations. The included professional four-terminal Kelvin test leads (UTR-L100k-H) eliminate lead resistance effects that can compromise measurement accuracy, particularly important for low-impedance components. The open/short clearing correction function compensates for parasitic impedances in test fixtures and connections, establishing an accurate zero reference for subsequent measurements. The constant 100Ω output impedance ensures consistent signal application across varying component values and test frequencies. These features combine to deliver professional measurement accuracy that meets the demands of research laboratories and precision manufacturing applications.

Professional Applications

Research and Development Excellence

In research and development environments, the UNI-T UT622C serves as a cornerstone tool for advanced component characterization and materials analysis. Research engineers can thoroughly evaluate component behavior across the complete 100Hz to 100kHz frequency range, gaining critical insights into frequency-dependent characteristics essential for innovative circuit design. The instrument's precision measurement capabilities enable detailed analysis of component quality factors, equivalent series resistance, and phase relationships crucial for optimizing circuit performance. The comprehensive parameter measurement suite supports materials research applications where understanding component behavior across multiple parameters and frequencies is essential. USB connectivity with SCPI command support facilitates integration with automated measurement systems for complex characterization protocols and data acquisition requirements.

Manufacturing Quality Control

The UT622C excels in demanding manufacturing environments where precision and speed are equally important. Quality control engineers can rapidly verify component specifications using the high-speed measurement capability combined with the tolerance sorting function for clear pass/fail determination. The ability to test components across multiple frequencies ensures specification compliance across the intended operating range, not just at single test points. The instrument's comprehensive parameter analysis capability helps identify subtle component variations that could affect final product performance. For manufacturing operations requiring documented quality procedures, the USB interface and SCPI command support enable integration with quality management systems for automated testing and result archiving.

Advanced Field Service Operations

Field service professionals benefit from the UT622C's combination of laboratory-grade measurement capabilities and portable design for complex troubleshooting applications. When diagnosing sophisticated electronic systems, the comprehensive frequency and parameter analysis capabilities help identify component degradation and failure modes that simpler instruments might miss. The professional measurement accuracy enables confident component evaluation in critical applications where measurement uncertainty could lead to incorrect diagnosis. The extended 8-hour battery life supports full-day field operations without recharging requirements, essential for remote site work. The bright TFT display with white backlight ensures excellent visibility in challenging field environments while maintaining the measurement precision required for professional service operations.

Technical Specifications

Available Accessories

Complete Package Contents

• UNI-T UT622C Handheld LCR Meter
• Four-terminal Kelvin test leads (UTR-L100k-H)
• Short circuit board (UTR-001)
• USB communication cable
• 5V/1A charging adapter
• Comprehensive English manual
• Professional gift box packaging

UNI-T UT622 Series Model Comparison

Frequently Asked Questions

How does the 100kHz frequency capability enhance component analysis?

The 100kHz test frequency significantly extends the UT622C's analytical capabilities for advanced applications and high-frequency component characterization. At higher frequencies, component parasitic effects become more prominent, and material properties in inductors and capacitors can behave quite differently compared to low-frequency characteristics. This extended frequency range allows engineers to evaluate components under conditions that closely match their actual operating environment in RF circuits, switching power supplies, and high-speed digital applications. For materials research and advanced component development, the 100kHz capability enables comprehensive frequency response characterization. Components that appear identical at standard test frequencies may show significant performance differences at higher frequencies, making this capability essential for thorough component evaluation.

What advantages do the professional Kelvin test leads provide?

The four-terminal Kelvin test leads included with the UT622C provide a significant accuracy advantage by eliminating test lead resistance from measurements through separate current-carrying and voltage-sensing paths. In conventional two-terminal measurements, the same conductors carry test current and sense voltage, causing lead resistance to add to the measurement result—a critical issue for low-impedance components. The Kelvin configuration uses dedicated current and voltage paths, with the voltage sensed directly at the component terminals, effectively removing lead resistance from the measurement. This technique dramatically improves accuracy for low-impedance measurements including small-value resistors, low-inductance components, and large-value capacitors. The professional UTR-L100k-H leads ensure this accuracy advantage is maintained even in demanding field measurement applications.

How does the high-speed testing capability benefit production environments?

The UT622C's high-speed measurement capability of up to 20 tests per second provides substantial productivity benefits in manufacturing and quality control operations. This rapid measurement rate directly translates to increased throughput in component screening, incoming inspection, and production testing workflows. Combined with the tolerance sorting function and LED pass/fail indication, operators can efficiently process large quantities of components with immediate visual feedback. The three-speed selection allows optimization for specific applications: fast mode for high-volume screening, medium speed for balanced performance, and slow mode for maximum precision when required. Production managers appreciate the flexibility to balance speed and accuracy according to quality requirements while maintaining measurement traceability through the USB interface and SCPI command support.

Can the UT622C be integrated with automated test systems?

The UT622C offers seamless integration with automated test systems through its Mini-USB interface and comprehensive SCPI command set support. This industry-standard command structure enables test engineers to control the instrument from various automation platforms without requiring proprietary drivers or specialized software. In automated environments, the instrument can be programmed for specific measurement sequences with results automatically collected and analyzed by the control system. This capability proves particularly valuable for documented quality procedures requiring consistent test protocols and result archiving. The instrument's high measurement speed further enhances its suitability for automated applications by minimizing test cycle times. While not matching the throughput of dedicated automated test equipment, the UT622C provides an economical automation solution for small to medium production operations.

What is the benefit of having both series and parallel equivalent circuit modes?

The series and parallel equivalent circuit modes in the UT622C provide essential flexibility for accurately representing real-world component behavior in different circuit applications. Real components exhibit parasitic resistances that can be modeled as either series or parallel elements depending on the component type and circuit context. The appropriate model selection depends on the specific component and application—for example, electrolytic capacitors are typically represented in series mode to properly account for Equivalent Series Resistance (ESR), while ceramic capacitors are often better modeled in parallel mode. By providing both equivalent circuit options, the UT622C enables engineers to obtain measurements that accurately reflect component behavior in specific circuit configurations. This capability is particularly valuable during design verification phases where understanding component behavior in the intended circuit context is essential for predicting overall system performance and reliability.

How does the UT622C compare to basic LCR meters in terms of measurement capability?

The UT622C provides significantly enhanced measurement capabilities compared to basic LCR meters through its extended frequency range, professional accuracy, and comprehensive parameter analysis. While basic instruments typically operate at single frequencies with limited parameter measurement, the UT622C offers five test frequencies from 100Hz to 100kHz, enabling thorough component characterization across the frequency spectrum. The professional 0.1% accuracy specification, achieved through Kelvin test leads and advanced compensation techniques, exceeds typical basic meter capabilities. The comprehensive parameter suite including both primary (L/C/R/Z) and secondary (D/Q/θ/ESR) measurements provides complete component analysis rather than simple single-parameter readings. Additionally, the high-speed measurement capability, tolerance sorting, and PC connectivity through SCPI commands offer professional features not available in basic instruments, making the UT622C suitable for demanding applications requiring laboratory-grade measurement performance.

Warranty and Support

The UNI-T UT622C handheld LCR meter is supported by a comprehensive 1-year warranty covering manufacturing defects and component failures under normal operating conditions. UNI-T provides professional technical support through experienced engineering specialists, with responsive assistance available via phone, email, and comprehensive online resources. Professional calibration services and extended warranty programs are available to ensure your instrument maintains optimal performance throughout its operational lifetime.

Professional Component Analysis Solution

The UNI-T UT622C handheld LCR meter delivers professional measurement performance for engineers and technicians requiring comprehensive component characterization capabilities in a portable package. With its extended 100kHz frequency range, laboratory-grade accuracy, and professional four-terminal test system, the UT622C brings advanced analysis capabilities to field, production, and research environments. Experience the precision and versatility that comprehensive component analysis brings to your electronics development, manufacturing quality control, and advanced troubleshooting applications.