New Generation Automatic Oil Interface Tensiometer Launches: Ultra-High Precision & Fully Automated Operation

This is a fully automated oil interfacial tension meter that strictly complies with the national standard GB/T 6541. Utilizing an improved magnetic tank-based sealed electromagnetic force balance sensor and the platinum ring method testing principle, the instrument achieves complete automation across the entire process—from parameter setup and system calibration to sample testing and data output—with measurement accuracy of ±0.1 mN/m. It enables precise determination of interfacial tensions in liquid-gas and liquid-liquid systems, providing a highly reliable domestic solution for liquid property analysis in industries such as petroleum, power, chemical, and pharmaceuticals.

The newly released fully automated oil interfacial tension meter has undergone comprehensive upgrades in detection accuracy, environmental adaptability, and automation level. Its key technical specifications are as follows:

This instrument fundamentally addresses the shortcomings of traditional interfacial tension testing, which relies on manual operation and involves cumbersome procedures, by establishing a standardized and automated comprehensive testing process.

1. Installation and Leveling Calibration: Place the instrument on a stable, wind-free experimental platform. Adjust the adjustable feet at the base to center the built-in level bubble. Complete the assembly of the platinum ring and magnetic suspension rod, ensuring no collision between the suspension rod and the instrument while maintaining overall horizontal stability, thereby establishing a foundation for precise measurement.
2. Parameter Configuration: From the main interface, navigate to the parameter settings module to configure parameters such as light/heavy liquid density, platinum ring radius, and platinum wire radius according to testing requirements. The system supports enabling automatic temperature compensation and allows setting auxiliary configurations like printing mode and system date/time. All parameters can be saved with a single click.
3. System Calibration:
   1. Weight calibration: Select the weight calibration function, and the instrument automatically performs zero-point and range calibration for the sensor. A single-point calibration is sufficient to ensure linearity and accuracy across the entire measurement range, completely replacing the traditional multi-point calibration process required for conventional sensors.
   2. Pure water calibration: After cleaning the platinum ring and test cup, add pure water to the test cup up to the lower calibration mark. Initiate the pure water calibration process; the instrument will automatically perform system accuracy verification to ensure the precision of the testing reference.
4. Sample Testing:
   1. Select the sample measurement function. After cleaning the testing components, first add the lower aqueous phase to the test chamber up to the lower mark line, then follow the system prompts to add the upper oil sample to be tested up to the upper mark line.
   2. Upon clicking the "Start" button, the instrument automatically completes platinum ring elevation, tension detection, and automatic calculation of tension values without any manual intervention.
5. Data Output: Upon completion of testing, the instrument automatically displays the final interfacial tension results, allowing direct printing of a standardized test report or uploading of data to a computer via the RS232 interface. All test records are automatically stored and support time-based retrieval of historical data, meeting data traceability requirements.

With its precise detection capabilities and broad applicability, this instrument meets the core requirements of various industries for liquid interface/surface tension measurement.

• Power Industry: Measures the oil-water interfacial tension of transformer oil and insulating oil to assess their aging degree and contamination levels, promptly identify potential risks of oil quality deterioration, and ensure the safe and stable operation of power equipment such as transformers.
• Oil Industry: Measures the surface/interfacial tension of crude oil, lubricating oil, and fuel oil; optimizes oil formulations; evaluates the emulsifying and wetting properties of oils; and guides refinery process adjustments and quality control of refined products.
• Chemical Industry: Used for evaluating the interfacial properties of products such as surfactants, coatings, inks, and detergents to verify their dispersibility and permeability, thereby supporting new product development and quality control during production.
• Pharmaceutical Industry: Determine the surface tension of pharmaceutical agents and biologics to optimize drug absorption and stability, meet the requirements for pharmaceutical product development and quality control, and ensure therapeutic efficacy.

To address the common challenges in traditional interfacial tension testing, this instrument offers tailored technical solutions:

Solution: The instrument is equipped with a sealed wind-resistant test chamber (with a transparent observation door) to effectively isolate laboratory airflow disturbances. Additionally, it employs a highly stable electromagnetic force balance sensor combined with a shock-absorbing base design, significantly reducing the impact of environmental vibrations on tensile testing and ensuring the stability and repeatability of test results.

Solution: Featuring a newly improved magnetic-cylinder sealed electromagnetic force balance sensor, it requires only single-point weight calibration to ensure linearity and accuracy across the entire measurement range, completely eliminating the cumbersome multi-point calibration process of previous sensors, significantly simplifying instrument calibration procedures, and lowering user adoption barriers.

Solution: Equipped with a built-in high-precision temperature sensor, the instrument automatically collects ambient temperature and employs a bidirectional temperature compensation mechanism based on 25°C as the reference point to automatically correct the impact of temperature on test results. Regardless of fluctuations in laboratory ambient temperature between 10°C and 40°C, it ensures the accuracy of test results without requiring manual correction.

Solution: The entire process is fully automated, with all operations—from calibration to testing—performed automatically by the instrument, eliminating errors associated with manual intervention. Additionally, it features built-in high-capacity storage for automatic preservation of all test records, supporting historical retrieval, thermal-sensitive printing, and data upload, ensuring traceability of test data and compliance with laboratory quality management system requirements.

The introduction of this fully automated oil interfacial tension tester fills a market gap for mid-to-high-end interfacial tension testing instruments in China. Its performance specifications match those of international counterparts, while the price is only about one-third of imported products, significantly reducing testing costs for enterprises. Additionally, the automated operation process minimizes human interference, enhances the accuracy and reliability of test results, and provides robust technical support for product development, quality control, and safe production across various industries.

Currently, this product has passed testing and certification by national authoritative institutions and is officially available for sale nationwide. It will be widely utilized in the detection of liquid interface properties across various laboratories, quality inspection centers, and manufacturing enterprises.