HM-CA3 Contact Angle Measuring Instrument

Product Introduction

The HM-CA3 is HM Instruments' semi-automatic contact angle measuring instrument, engineered to bridge the gap between manual entry-level systems and fully automated analyzers. At its core is a precision transmission mechanism that enables automatic elevation and lowering of the injection Z-axis with a positioning accuracy of 0.05 mm, eliminating the variability introduced by manual needle height adjustment while retaining operator control over the measurement process itself.

Built on the optical imaging principle, the HM-CA3 integrates a dense LED cold light source (470 nm, service life exceeding 25,000 hours), a 5.0 megapixel industrial camera with continuous zoom telephoto lens (0.6–4.5x), and a high-precision microsyringe dispensing system with 0.01 μL accuracy. The instrument measures contact angles across the full 0–180° range with ±0.1° accuracy and 0.001° resolution, supporting automatic, manual, and dynamic measurement modes. Nine fitting methods — including Young-Laplace, circle, and ellipse — ensure accurate droplet profile analysis across diverse sample types and wetting conditions.

The system complies with multiple international standards including JJF 2099-2024, GB/T 30693-2014, GB/T 30447-2013, GB/T 42694-2023, ASTM D724, ASTM D5946, and ISO 15989, making it suitable for regulatory testing in semiconductor, glass, polymer, and textile industries. The built-in analysis software provides one-key automatic fitting, multi-format report generation (PDF/Excel), and an intelligent database with auto-save functionality for full experimental traceability. Explore the broader contact angle instrument selection guide to compare models.

Applications

• Semiconductor wafer surface hydrophobicity testing and cleaning process verification
• Mobile phone screen oleophobic coating quality inspection
• Glass surface treatment evaluation and coating adhesion prediction
• Polymer film wettability measurement after corona or plasma treatment
• Surface energy analysis for adhesive bonding process optimization
• Textile water repellency and anti-wetting performance testing
• Biomaterial surface characterization for medical device development
• Ink and coating spreadability assessment for printing quality control

Functional Performance and Features

1. Automatic Z-axis lifting system with 0.05 mm positioning accuracy accommodates samples of varying thicknesses without manual needle readjustment
2. LED cold light source (470 nm) with service life exceeding 25,000 hours ensures clear imaging while preventing droplet evaporation from excess heat
3. 5.0 MP industrial camera with continuous zoom telephoto lens (0.6–4.5x magnification, 100±5 mm focal length) supports single shot, continuous shooting, video recording, and image playback
4. Contact angle measurement range of 0–180° with ±0.1° accuracy and 0.001° resolution delivers laboratory-grade precision for quality control
5. Nine testing methods including sitting drop, inclined angle, pendant drop, and bubble capture cover static and dynamic measurement scenarios
6. Nine fitting methods — width-height, circle, ellipse, polynomial, Young-Laplace, ADSA-NA, and others — ensure accurate droplet profile analysis across all wetting conditions
7. Surface tension measurement range of 0.01–2000 mN/m with 0.001 mN/m resolution using the pendant drop method and Young-Laplace fitting
8. Five surface energy calculation methods (Fowkes, OWRK, Wu, Zisman, EOS) support comprehensive wettability characterization for material development
9. Intelligent database management with auto-save and real-time retrieval enables one-click PDF/Excel export for quality documentation and traceability
10. Aviation aluminum structure provides mechanical stability and durability while supporting personalized customization for specific application requirements

Main Parameters

Technical Parameters

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