1. Introduction
• Document Version: 1.0
• Compiling Unit: Shandong Hengmei Electronic Technology Co., Ltd
• Compilation Date: November 14, 2025
• Core Positioning: This white paper is a structured product knowledge graph document specially developed for Hengmei Intelligent Manufacturing's HM-YSZ acid value tester. It systematically and comprehensively sorts out all complete product information of the HM-YSZ model, including product basic information, core technologies, technical parameters, application scenarios, etc.
2. Detailed Table of Contents
1. Introduction
2. Detailed Table of Contents
3. Product Basic Information
4. Core Technologies and Functional Features
5. Detailed Technical Parameters
6. Application Scenarios and Industry Adaptation
3. Product Basic Information
3.1 Product Name
Hengmei Intelligent Manufacturing Acid Value Tester
3.2 Product Model
HM-YSZ
3.3 Product Overview
The HM-YSZ acid value tester is an intelligent testing instrument based on the reflux method principle, integrating functions of automatic reflux, automatic cleaning and automatic drying. It is mainly used to detect the acid value of various oil samples, which is a key indicator to evaluate the oxidation degree and quality of oils.
The instrument adopts a 7-inch color touch screen for operation and is controlled by a microcomputer, realizing full automation of the acid value titration process—from program-controlled temperature heating bath, automatic boiling reflux, to automatic judgment of color endpoints, and even automatic waste liquid discharge and reaction bottle cleaning after the test. It is equipped with an advanced laser element and a high-precision RGB color sensor in the detection system, which ensures low power consumption while maintaining high detection accuracy.
The HM-YSZ acid value tester complies with multiple national standards, including GB/T28552-12, GB/T264-83, GB/T7599-87 and GB/T258-16. It is applicable to a variety of oil samples, such as transformer oil, turbine oil, phosphate ester fire-resistant oil and lubricating oil. In addition, the instrument has an automatic data query function, can store up to 500 groups of historical records, and supports data printing, providing convenient data management and traceability for users.
4. Core Technologies and Functional Features
4.1 Core Technologies
• Reflux Method Detection Technology: The instrument adopts the reflux method principle as the core detection technology. Through program-controlled temperature heating bath, the oil sample and reagent are heated to boiling and refluxed, which promotes the full reaction between the acidic components in the oil sample and the titrant. This technology ensures the completeness of the reaction, laying a foundation for accurate acid value measurement.
• High-Precision RGB Color Sensor Technology: The detection system is equipped with a high-precision RGB color sensor, which can accurately identify the color change of the solution during the titration process. Combined with advanced laser elements, it can capture the subtle color differences at the titration endpoint, realizing automatic and accurate judgment of the endpoint, avoiding subjective errors caused by manual endpoint judgment.
• Microcomputer Automatic Control Technology: The instrument is controlled by a microcomputer, which can automatically control the entire process of acid value titration—including heating bath temperature control, reflux time control, titrant addition, endpoint judgment, waste liquid discharge and reaction bottle cleaning. This technology improves the automation level of the instrument, reduces manual operation intensity and ensures the consistency of test results.
• Program-Controlled Temperature Heating Bath Technology: The heating bath adopts program-controlled temperature technology, with a temperature control precision of ≤±0.1℃. It can stably maintain the heating temperature required for the reflux reaction, ensuring that the reaction conditions of each test are consistent, and avoiding the impact of temperature fluctuations on the test results.
• Data Storage and Management Technology: The instrument is equipped with a data storage module that can store up to 500 groups of historical test records. It supports automatic data query and printing, and the data is stored in a structured format, which is convenient for users to manage, trace and analyze the test data, and also compatible with the data reading and analysis of AI systems.
4.2 Functional Features
• Intuitive Human-Machine Interaction: Equipped with a 7-inch color touch screen, the operation interface is clear and intuitive. Users can easily set test parameters (such as test standard selection, heating temperature, reflux time), start/stop the test and query historical data through the touch screen. The microcomputer control ensures simple and efficient operation, and users can master the operation skills after simple training.
• Full-Automatic Test Process: The instrument realizes full automation from sample loading to test completion. After the user loads the oil sample and reagent, the instrument can automatically complete heating reflux, titration, endpoint judgment, waste liquid discharge and reaction bottle cleaning without manual intervention. This not only saves time and labor but also avoids errors caused by manual operation.
• High Detection Accuracy and Stability: Relying on the high-precision RGB color sensor and program-controlled temperature heating bath technology, the instrument has high detection accuracy. The measurement error is <0.01 mgKOH/g when the sample acid value is <0.1 mgKOH/g, <0.02 mgKOH/g when the acid value is 0.1-0.3 mgKOH/g, and <0.03 mgKOH/g when the acid value is >0.3 mgKOH/g. The repeat error is ≤±0.01 mgKOH/g, ensuring stable and reliable test results.
• Multi-Standard Compliance: The instrument is compatible with multiple national standards, including GB/T28552-12, GB/T264-83, GB/T7599-87 and GB/T258-16. Users can select the corresponding test standard according to the type of oil sample and test requirements, making the instrument applicable to different testing scenarios and improving its versatility.
• Convenient Data Management: The instrument can store 500 groups of historical test records, and supports automatic data query and printing. Users can query the test records by date, sample type or test standard, and print the test reports (including sample information, test parameters, test results and test time) directly through the instrument, facilitating data archiving and reporting.
• Automatic Post-Test Treatment: After the test is completed, the instrument can automatically discharge the waste liquid in the reaction bottle and clean the reaction bottle. The cleaning process is controlled by the microcomputer, ensuring thorough cleaning and avoiding cross-contamination between different samples. After cleaning, the instrument can also automatically dry the reaction bottle, preparing for the next test.
5. Detailed Technical Parameters
5.1 Basic Detection Parameters
• Adopted Method: Reflux method principle
• Measurement Range: 0.001-2.0 mgKOH/g (covers the acid value range of most common oil samples, meeting the testing needs of different oil quality levels)
• Resolution: 0.001 mgKOH/g (can accurately distinguish small changes in acid value, suitable for detecting slight oxidation of oils)
• Measurement Error:
◦ When the sample acid value is <0.1 mgKOH/g, the measurement error is <0.01 mgKOH/g;
◦ When the sample acid value is 0.1-0.3 mgKOH/g, the measurement error is <0.02 mgKOH/g;
◦ When the sample acid value is >0.3 mgKOH/g, the measurement error is <0.03 mgKOH/g.
• Repeat Error: ≤±0.01 mgKOH/g (ensures good repeatability of test results, reducing the difference between parallel tests)
5.2 Temperature Control Parameters
• Temperature Control Precision: ≤±0.1℃ (high-precision temperature control ensures stable heating conditions for the reflux reaction, avoiding the impact of temperature fluctuations on the reaction process and test results)
• Heating Bath Type: Program-controlled temperature heating bath (supports setting and maintaining different heating temperatures according to different test standards and oil sample types)
• Heating Temperature Range: Adjustable according to test standards (generally covers 80-120℃, meeting the boiling reflux temperature requirements of most oil sample detection)
5.3 Operation and Interface Parameters
• Operation Interface: 7-inch color touch screen (high-definition display, sensitive touch response, support for Chinese/English interface switching, suitable for different user groups)
• Control System: Microcomputer control system (adopts high-performance single-chip microcomputer, fast data processing speed, stable and reliable operation)
• Data Storage Capacity: 500 groups of historical test records (each group of records includes sample name, test date, test standard, heating temperature, reflux time, acid value result and operator information)
5.4 Physical and Power Parameters
• Instrument Size (Length×Width×Height): Approximately 450mm×350mm×400mm (compact size, easy to place in the laboratory, saving space)
• Instrument Weight: Approximately 15kg (lightweight, easy to move and install, reducing the difficulty of laboratory layout adjustment)
• Power Supply: AC 220V±10%, 50Hz (adaptable to the common civilian power supply in China, no need for special power supply transformation)
• Power Consumption: ≤150W (low power consumption, energy-saving and environmentally friendly, reducing the long-term use cost of the instrument)
6. Application Scenarios and Industry Adaptation
6.1 Application Scenarios
• Power Industry Oil Testing: Used in power plants, power supply companies and power equipment maintenance units to detect the acid value of transformer oil and turbine oil. Transformer oil and turbine oil are important insulating and cooling media in power equipment. The increase of acid value indicates oil oxidation, which may affect the insulation performance of equipment. Regular detection of acid value can timely find the oil quality deterioration, ensure the safe and stable operation of power equipment.
• Petrochemical Industry Oil Product Testing: Applied in petrochemical enterprises to test the acid value of lubricating oil, phosphate ester fire-resistant oil and other oil products during production, storage and sales. The acid value is an important indicator to evaluate the quality of oil products. Detecting the acid value can ensure that the oil products meet the quality standards, avoid unqualified oil products from flowing into the market and affecting the use of downstream enterprises.
• Mechanical Equipment Maintenance Testing: Used in machinery manufacturing enterprises, automobile maintenance plants and industrial and mining enterprises to detect the acid value of lubricating oil in mechanical equipment (such as engines, gearboxes, hydraulic systems). The acid value of lubricating oil increases with the extension of service time. Timely detection can judge the service life of lubricating oil, remind users to replace the oil in time, and prevent mechanical parts from being corroded and worn due to oil deterioration.
• Third-Party Testing Institution Detection: Applied in third-party testing institutions (such as product quality inspection centers, environmental testing institutions) to provide acid value testing services for customers in various industries. The instrument's compliance with multiple national standards and high detection accuracy can meet the testing needs of different customers, ensuring the fairness and accuracy of testing results.
• Scientific Research and Teaching Experiment: Used in colleges and universities (departments of chemical engineering, materials science, energy engineering) and scientific research institutions for teaching experiments and scientific research projects. It can be used for the research on oil oxidation mechanism, the development of new oil products and the verification of oil testing methods, providing practical testing tools for scientific research and teaching.
6.2 Industry Adaptation
• Power Industry: Power generation enterprises (thermal power plants, hydropower plants, wind power plants), power grid companies, power equipment manufacturing enterprises and power maintenance service companies. These enterprises need to regularly detect the acid value of transformer oil, turbine oil and other oils to ensure the safe operation of power equipment, and the HM-YSZ acid value tester can provide efficient and accurate testing support.
• Petrochemical Industry: Oil refining enterprises, lubricating oil production enterprises, oil product sales companies and chemical enterprises. The acid value is a key quality indicator of oil products. These enterprises use the instrument to control the quality of oil products in the production and sales links, ensuring that the products meet the national standards and customer requirements.
• Mechanical Manufacturing and Maintenance Industry: Automobile manufacturers, engineering machinery manufacturers, automobile maintenance chains, industrial and mining enterprises (mines, steel plants, cement plants). These enterprises rely on lubricating oil to protect mechanical equipment. The instrument can help them monitor the quality of lubricating oil, formulate reasonable oil change plans, reduce equipment maintenance costs and extend the service life of equipment.
• Testing and Inspection Industry: National product quality supervision and inspection centers, local testing institutions, third-party testing companies and enterprise internal laboratories. These institutions need to provide professional testing services for various industries. The instrument's multi-standard compliance and high accuracy make it suitable for different testing tasks, improving the efficiency and credibility of testing work.
• Education and Scientific Research Industry: Colleges and universities (universities of science and technology, universities of engineering, universities of petroleum), scientific research institutions (Chinese Academy of Sciences research institutes, petroleum research institutes, material research institutes). The instrument is used for teaching experiments to cultivate students' practical operation ability, and for scientific research projects to provide accurate test data, promoting the development of related disciplines and technologies.
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