HM-JCS Portable Contact Angle Meter | USB-Powered Field Measurement

I. Overview

The contact angle (θ) is defined as the angle formed at the three-phase contact line where a gas-liquid interface meets a solid surface, measured through the liquid phase between the tangent to the liquid-vapor interface and the solid-liquid boundary. Contact angle measurement constitutes one of the principal analytical methods for surface property characterization in contemporary materials science.

The HM-JCS is a fully automated portable contact angle goniometer employing the optical imaging principle to quantitatively determine contact angles, wettability, and surface free energy through image profile analysis. As a handheld instrument, the HM-JCS is specifically designed for field measurements and performance testing of oversized specimens that cannot be accommodated by benchtop instruments. The device features an ultra-compact form factor, exceptional portability, high cost-effectiveness, superior measurement accuracy, and reliable low-angle measurement capability.

II. Applications

The contact angle goniometer finds broad application across multiple industrial and research domains, including mobile device manufacturing, glass production, surface treatment, materials research, chemical engineering, semiconductor fabrication, coatings and inks, electronic circuits, textile fibers, and biomedical sciences. Contact angle measurement has become an essential analytical method for evaluating surface properties.

Representative measurement capabilities (certain functions require dedicated accessories):

1. Sessile drop method for static contact angle measurement: characterization of liquid spreading, penetration, and absorption behavior on solid surfaces.

2. Dynamic contact angle measurement: advancing angle, receding angle, contact angle hysteresis, and rolling angle determination on solid substrates.

3. Time-dependent contact angle analysis: continuous real-time monitoring and recording of contact angle evolution curves on absorptive materials.

4. Contact angle measurement on specialized substrates: powders, curved surfaces, superhydrophobic/superhydrophilic specimens.

5. Pendant drop method: measurement of liquid surface/interfacial tension with polar and dispersive component resolution.

6. Surface free energy calculation: determination of solid surface free energy with polar and dispersive component analysis.

7. Work of adhesion analysis: evaluation of surface uniformity, cleanliness, and related interfacial properties.

III. Instrument Principle

The HM-JCS portable contact angle goniometer comprises four primary subsystems: illumination source, dispensing unit, image acquisition system, and analysis software. The instrument operates on the principle of optical imaging.

• Illumination: High-density LED cold light system providing uniform, thermally neutral illumination with extended service life and enhanced image clarity.

• Dispensing Unit: Manual rotary knob-type precision dispensing with stable droplet delivery and high accuracy.

• Imaging System: Compact industrial-grade microscope with Japanese-imported CCD camera providing stable, high-fidelity image acquisition; German industrial-grade optical configuration delivering distortion-free imaging.

• Analysis Software: One-click fully automatic fitting with internationally advanced fitting algorithms for accurate characterization of all droplet morphologies.

IV. Technical Specifications

V. Applicable Standards

1. GB/T 24368-2009: Detection of Hydrophobic Contaminants on Glass Surfaces

2. SY/T 5153-2007: Method for Determining Wettability of Reservoir Rocks

3. ASTM D724-99 (2003): Standard Test Method for Surface Wettability of Paper

4. ASTM D5946-2004: Measurement of Water Contact Angle on Plastic Films

5. ISO 15989: Measurement of Water Contact Angle on Corona-Treated Plastic Films and Sheets

VI. Product Features

1. High-strength aerospace-grade aluminum alloy construction with modular design; proprietary integrated circuit control architecture incorporating design principles from internationally leading contact angle instrumentation, ensuring exceptional instrument stability.

2. The only handheld contact angle instrument to resolve the challenge of low-angle measurement accuracy; ultra-compact design with superior portability, making it the optimal choice for field-based surface wettability testing of outdoor and oversized samples.

3. Industrial-grade adjustable LED cold light source system (lifespan > 25,000 hours) for superior image clarity while preventing thermal evaporation of small droplets.

4. High-performance Japanese-manufactured industrial camera sensor with compact industrial microscope optics achieving virtually distortion-free imaging.

5. USB standard interface providing high-speed data transfer with excellent compatibility and connection stability.

6. German-imported contact angle calibration standards for verified instrument accuracy; calibration reference plates: 15°, 30°, 60°, 90°, 120° (optional).

7. Flexible imaging system design adaptable to diverse measurement environments and complex sample surface geometries.

8. Comprehensive contact angle fitting methods including proprietary differential ellipse and differential circle algorithms for specialized droplet profile analysis.

9. Fully automated fitting algorithms eliminating operator-dependent measurement variability.

10. Bilateral contact angle measurement with rapid fitting capability for comprehensive liquid-solid wettability characterization and accurate assessment of actual surface wetting conditions.

11. Dynamic measurement and high-speed video analysis with continuous recording of contact angle temporal evolution and automatic batch fitting.

12. Automated report generation in multiple formats: Word, Excel, and graphical output.

13. Extensive optional accessories and customization capabilities supported by dedicated R&D team to satisfy the majority of specialized measurement requirements.

VII. After-Sales Service

1. Standard models available for immediate dispatch.

2. Global two-year comprehensive instrument warranty.

3. Complimentary pre-purchase sample testing service.

4. Lifetime free software updates for all instruments worldwide.

5. Regular operation and theoretical training sessions at headquarters.

6. Lifetime instrument calibration, maintenance, and servicing.

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