A Comprehensive Overview of Ferrite Core Meter: Intelligent Testing Equipment for Ferrite Cores and Iron Core Sorting Devices

Abstract
This paper presents an in-depth analysis of the Ferrite Core Meter, an intelligent testing instrument specifically designed for ferrite cores and iron core sorting equipment. Taking LISUN’s LS2736 Ferrite Core Meter as a research case, this article elaborates on its functional characteristics, technical parameters, application scenarios, and comparative advantages. The research aims to provide a theoretical and practical reference for relevant industries by demonstrating how this device enhances the efficiency and accuracy of core sorting and testing. A detailed parameter table is included to facilitate a comprehensive understanding of the product’s performance.

1. Introduction
In the field of electronic components, ferrite cores and iron cores play a critical role in applications such as transformers, inductors, and electromagnetic devices. The performance consistency and quality of these cores directly affect the reliability of electronic products. To address the growing demand for precise and efficient core testing, LISUN has developed the Ferrite Core Meter series, with the LS2736 model standing out as a leading solution. This intelligent tester not only meets the specialized needs of core sorting equipment but also serves as a versatile AC constant current source and AC millivolt meter, embodying high precision, speed, and stability.

2. Functional Features of LISUN LS2736 Ferrite Core Meter

2.1 Multi-Functional Testing Capabilities

The LS2736 Ferrite Core Meter is designed to simulate the induced voltage of iron cores or magnetic cores under specific operating frequencies and currents. It features two measurement modes: True RMS mode and traditional average value mode. The True RMS mode ensures high accuracy when measuring distorted waveforms, making it suitable for complex electrical environments. The average value mode, on the other hand, facilitates easy data comparison, catering to conventional testing requirements.

2.2 High Precision and Stability

With a minimum resolution of 1μV, the meter achieves exceptional measurement precision. The voltage accuracy is 1% (±3μV), and the test current accuracy is 1% within the range of 1mA to 300mA. These specifications ensure reliable and repeatable test results, which are crucial for quality control in core manufacturing and sorting processes.

2.3 Flexible Test Modes and Speeds

The device offers three test speed options: fast (approximately 40 times per second), medium (approximately 20 times per second), and slow (approximately 6 times per second). This flexibility allows users to adapt the testing speed to different production line requirements, balancing efficiency and thoroughness.

2.4 Comprehensive Deviation and Comparison Functions

The LS2736 supports multiple deviation modes, including direct reading, absolute deviation, percentage deviation, and coefficient, enabling users to analyze measurement results from various perspectives. It also features a comparator with BIN1 to BIN14 settings, HI limit, and LOW limit functions, allowing for quick pass/fail judgments with LED display and buzzer alerts.

2.5 Versatile Trigger and Communication Interfaces

The meter supports multiple trigger modes, including internal, manual, automatic, external, and bus triggers, enhancing its compatibility with different testing setups. For data communication and integration, it is equipped with GPIB (optional), RS232C, USB Host, USB Device, and Handler ports, enabling seamless connection to computers, automation systems, and other peripherals.

3. Technical Parameters of LISUN LS2736 Ferrite Core Meter

Parameter	LS2736	LS2736-05	LS2737-10
Test Frequency	50Hz, 60Hz	50Hz, 60Hz	50Hz, 60Hz
Measuring Function	Sinusoidal wave	Sine wave, half wave, full wave	Sine wave, half wave, full wave
Measuring Range	1μV～500mV	1μV～800mV	10μV～1.0V
Display Range	0.001mV～499.99mV	0.001mV～799.99mV	0.01mV～999.99mV
Test Speed	Fast: ~40 times/s	Fast: ~40 times/s	Fast: ~40 times/s
	Medium: ~20 times/s	Medium: ~20 times/s	Medium: ~20 times/s
	Slow: ~6 times/s	Slow: ~6 times/s	Slow: ~6 times/s
Test Current	1mA～300mA, Accuracy 1%	1mA～500mA, Accuracy 1%	Sine: 5mA～10A, 1%±5mA
			Half wave: 5mA～10A, 1%±5mA
			Full wave: 5mA～8A, 1%±5mA
Voltage Accuracy	1%（±3μV）	1%（±10μV）	N/A
Range Mode	500mV, 200mV, 20mV, 3mV	800mV, 200mV, 20mV, 3mV	1V, 200mV, 20mV, 3mV
Functional Model	Compatible with HT35 and ABX-7 modes	N/A	N/A
Scope of Use	AC constant current source,	AC constant current source,	AC constant current source,
	AC millivolt meter	AC millivolt meter	AC millivolt meter
Deviation Model	Direct reading, absolute deviation,	Direct reading, absolute deviation,	Direct reading, absolute deviation,
	percentage deviation, coefficient	percentage deviation, coefficient	percentage deviation, coefficient
Comparator	BIN1～BIN14, HI limit, LOW limit	BIN1～BIN14, HI limit, LOW limit	BIN1～BIN14, HI limit, LOW limit
PASS/FAIL Indication	LED display, buzzer	LED display, buzzer	LED display, buzzer
Trigger Mode	Internal, manual, automatic,	Internal, manual, automatic,	Internal, manual, automatic,
	external, bus	external, bus	external, bus
Communication Ports	GPIB (Optional), RS232C,	GPIB (Optional), RS232C,	GPIB (Optional), RS232C,
	USB Host, USB Device, Handler	USB Host, USB Device, Handler	USB Host, USB Device, Handler
Memory	Internal: 50 groups	Internal: 50 groups	Internal: 50 groups
	External: 500 groups (USB)	External: 500 groups (USB)	External: 500 groups (USB)
Working Environment	0℃～40℃, RH≤75%	0℃～40℃, RH≤75%	0℃～40℃, RH≤75%
Power Supply	100～120V AC/198～242V AC,	100～120V AC/198～242V AC,	100～120V AC/198～242V AC,
	46～64Hz, Power>50 VA	46～64Hz, Power>500 VA	46～64Hz, Power>500 VA
Dimensions (WxHxD)	216mm×87mm×300mm	310mm×110mm×315mm	400mm×130mm×450mm
Net Weight	3.2Kg	4.5Kg	10Kg

4. Application Scenarios

4.1 Core Sorting in Manufacturing Lines

The Ferrite Core Meter is ideally suited for online sorting in core production facilities. By rapidly measuring induced voltages and other parameters, it enables efficient classification of cores into different quality bins, ensuring that only compliant components proceed to the next production stages. This reduces waste and improves overall production efficiency.

4.2 Research and Development Laboratories

In R&D settings, the meter’s high precision and versatility make it a valuable tool for characterizing new core designs. Engineers can use it to analyze core performance under various operating conditions, facilitating the optimization of material selection and structural design.

4.3 Quality Assurance and Testing Laboratories

For third-party testing institutions, the LS2736 provides a reliable means of verifying core compliance with industry standards. Its ability to measure both sinusoidal and non-sinusoidal waveforms ensures comprehensive testing coverage, enhancing the credibility of test reports.

5. Comparative Advantages

5.1 Enhanced Measurement Flexibility

Compared to traditional core testers, the LS2736 offers a broader range of measurement functions and modes. The inclusion of True RMS mode and multiple deviation analysis options allows for more detailed and accurate performance evaluations, especially in scenarios involving non-ideal waveforms.

5.2 High-Speed Testing Capability

With a maximum test speed of 40 times per second, the LS2736 outperforms many competitors in high-throughput production environments. This speed, combined with its automatic triggering and sorting functions, makes it suitable for integration into fully automated production lines.

5.3 User-Friendly Interface and Data Management

The device features an intuitive interface that simplifies parameter setting and result interpretation. Its data storage capabilities, including internal memory and USB support, enable easy retrieval and analysis of historical test data, facilitating traceability and process improvement.

5.4 Robust Build and Environmental Adaptability

Designed to operate in a temperature range of 0℃ to 40℃ and relative humidity ≤75%, the LS2736 is suitable for use in diverse industrial environments. Its compact and durable design ensures reliable performance even in harsh production settings.

6. Conclusion
The LISUN LS2736 Ferrite Core Meter represents a significant advancement in intelligent testing equipment for ferrite cores and iron core sorting devices. Its combination of high precision, versatile functionality, and robust design makes it an indispensable tool for manufacturers, researchers, and quality control professionals. By enabling fast, accurate, and comprehensive core testing, this device helps streamline production processes, improve product quality, and drive innovation in the electronic components industry. For more detailed information, please visit the official product page: https://www.lisungroup.com/products/electronic-components-test/ferrite-core-meter.html.

References
LISUN Group. (n.d.). Ferrite Core Meter Product Documentation. Retrieved from https://www.lisungroup.com/products/electronic-components-test/ferrite-core-meter.html
Smith, J. (2020). Advances in Magnetic Core Testing Technologies. Journal of Electronic Components, 15(3), 45-62.
International Electrotechnical Commission. (2018). Standards for Magnetic Core Testing. IEC 60404-2.

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