Attension® Sigma Force Tensiometers
Attension® Sigma 702et
The Sigma 702ET is designed for oil-water interfacial tension measurements in accordance with the ASTM D971 and IEC 62961 standards. The embedded software will guide the user through the measurement and make sure the measurement is done automatically and in compliance with the ASTM D971 standard.
Designed for Oil Measurements
Designed for the ASTM D971 and IEC 62961 measurement standards
Open Design
Open design style for easy sample access
No Computer Required
Run experiments and display results without the need for a computer
Talk to an Instrumentation Specialist Today!
Reliable Interfacial Tension Testing for Transformer Oil Quality Control
The Sigma 702ET is tailored for routine interfacial tension measurements in transformer oil quality control. Its standalone design features a built-in display and keypad for straightforward operation without a connected PC. Automated stage movement and high-resolution force detection ensure consistent, reliable results. The guided workflow simplifies use in both lab and industrial settings, making it well-suited for regular compliance testing.
Supported Measurements
Surface Tension/ Interfacial Tension
Measures forces at a liquid’s surface or at an interface between two dissimilar phases.
Applications:
Detergents, agrochemicals, paints, food science, pharmaceuticals
Density
Determines the density of a liquid using a probe of known weight, or the density of a solid using a liquid of known density
Applications:
Oil, food science, pharmaceuticals, coatings
Attension® Sigma 702ET
Product Features
Built-In Standards Compliance
The Sigma 702ET includes an embedded measurement routine specifically configured for ASTM D971 and IEC 62961. The automated process ensures each step follows the required parameters for transformer oil analysis, reducing the risk of user error and simplifying routine compliance in regulated environments.
Balance Hook Probes
Balance hook probes for the Sigma 702ET include several tools used for precise surface and interfacial tension measurements, particularly in transformer oil analysis. The Du Noüy ring and Wilhelmy plate, both made from platinum and compliant with international standards, are commonly used in these applications. The platinum rod is suitable for small-volume samples, and a dedicated density probe is available for accurate liquid density measurements. These probes support the core measurements required for routine transformer oil quality testing and other interfacial analyses.
Standalone Operation
The Sigma 702ET runs as a fully standalone system, with a built-in digital screen and keypad that eliminate the need for a connected PC during routine operation. Results are displayed directly on the integrated screen, and data can be exported to an external computer for reporting or further analysis. This design simplifies day-to-day workflows, especially in production or quality control environments.
Motorized Sample Stage
The motorized sample stage moves with high precision, reaching position resolutions down to 0.01 mm and speed control as fine as 0.01 mm/min. This level of control is especially important for interfacial tension testing in transformer oil analysis. Stage movement is fully automated through the integrated keypad and on-screen interface, reducing variability and improving repeatability. Manual control is also available for quick adjustments.
High-Resolution Balance
The Sigma 702ET features a microbalance with 0.01 mg resolution and a maximum load capacity of 5 g. This level of sensitivity captures even subtle changes in force, which is essential for low-tension systems or small sample volumes. Automatic balance calibration helps maintain consistency across repeated measurements, reducing the need for manual adjustment.
Application Support & Local Service
In the US and Canada, the Attension products are supported and serviced by Nanoscience Instruments. We pride ourselves on providing exceptional application support and field service, ensuring your team of users is well-trained and the instrument is up and running in optimal condition. Whether you are interested in discussing the feasibility of a specific experiment or need help with troubleshooting your Attension system, our Support teams are here for you!
Attension® Sigma 702ET
Product Knowledgebase
Webinar
Optimizing Battery Materials with Force Tensiometer for Efficient Manufacturing
With the increased reliance on batteries for renewable energy power consumption, the devel…
8 Factors That Affect the Cost of a Force Tensiometer
A force tensiometer is an instrument that uses a highly sensitive analytical balance and s…
White Paper
Surface and interfacial tensions of liquids significantly affect their wetting behavior an…