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Fully Automatic Drop Angle Tester

Product Item : CA-200
Category： Other
Drop Angle Tester
Automatic Drop Angle Tester
Fully Automatic Drop Angle Tester
Product description：The system frame is constructed from high-quality imported high-strength anodized aluminum profiles with a baked enamel finish. All other major components are also precision-manufactured from aluminum
INQUIRY

Working Principle

The contact angle (denoted as θ) refers to the angle formed between the tangent of the gas-liquid interface drawn at the three-phase intersection of gas, liquid and solid (on the liquid side) and the solid-liquid boundary line. It serves as a quantitative measure of wettability and is a primary method for current surface property testing.

This instrument measures the contact angle, surface energy and other parameters on sample surfaces via optical imaging and image contour analysis. It mainly consists of a light source, liquid injection unit, sample stage, image acquisition system and analysis software. Equipped with a differential precision liquid feeding device, the equipment features high-cost performance, strong expandability and comprehensive functions, capable of meeting various routine measurement requirements. It has been widely adopted by numerous universities, research institutes and enterprises.

Application

Applications include solid surface treatment evaluation, plasma cleaning effect analysis, surface cleanliness analysis, solid-liquid interaction or solid-liquid adhesion characteristics research, liquid formulation design, surface printing performance characterization, analytical surface modification, and glass (including plastics or metals) surface wettability research. In fields such as mobile phone manufacturing, glass manufacturing, surface treatment, materials research, chemical engineering, semiconductor manufacturing, coatings and inks, electronic circuits, textile fibers, and medical biology, contact angle measurement has become an important instrument for evaluating surface properties.

Product Features

1. Precision Mechanics: The system frame is constructed from high-quality imported high-strength anodized aluminum profiles with a baked enamel finish. All other major components are also precision-manufactured from aluminum alloy, stainless steel, and copper alloy, ensuring exceptional instrument stability.

2. Precision Positioning: All linear movement units in the system, including the three-dimensional sample stage (XY axis), (Z-axis) syringe/needle movement adjustment, are driven by linear copper racks and pinions with precision dovetail grooves, ensuring smooth, effortless, and precise transmission.

3. Comprehensive Selection of Injectors and Needles: Dozens of different injector specifications are available for users to choose from, such as various sizes (25ul/50ul/100ul/250ul/500ul/1000ul…), materials (airtight glass injectors/plastic injectors), and brands (Hamilton/Boli…) to meet diverse customer needs. Offering various sizes (10-34#) and different materials (stainless steel/PTFE/PP flexible needles) as well as special needles (bent needles), it can be used for routine contact angle measurements, and also for sample introduction and droplet transfer of special liquids such as superhydrophobic, superhydrophilic, and high-viscosity liquids.

4. Imaging System: Employing a rolling shutter high-resolution CMOS image sensor paired with a 0.7-4.5 telecentric profile lens. Ensuring optimal imaging results. Simultaneously, a high-intensity backlight with continuously digitally adjustable brightness provides uniform background illumination for imaging.

High-quality lenses and high-resolution cameras can display droplets in images at ideal size and brightness, even very small droplets.

5. Leading Software Platform: Software is the soul and brain of the entire measurement system. CA V2.0 software provides users with a wide range of functions and features, many of which are outstanding in this field. As an optical method, the accuracy of the measurement depends on the quality of the image and the subsequent processing, analysis, and calculation methods. The core components of the software include sub-pixel droplet coordinate detection, automatic liquid/solid/fluid three-phase contact line identification, full droplet contour analysis, and droplet monitoring based on continuous information feedback, all of which can be completed in real time. It features automatic bilateral contact angle measurement and rapid fitting capabilities, analyzing the surface wetting properties of liquids and solids, and providing a more accurate analysis of the actual surface wetting situation.

6. The software automatically generates reports, including various data reports such as Word, Excel, PDF text and images, and spectral graphs.

7. Provides imported German contact angle measurement calibration samples to ensure instrument accuracy. Angle calibration standard plates are available in 5°, 8°, and 30° (optional); 60°, 90°, and 120° (optional).

8. Features a domestically pioneering automatic baseline tilt function, correcting for differences caused by sample or machine tilt.

9. A hierarchical management system with access control, separating lab technicians from administrators. This prevents human error from affecting test results.

10. Equipped with a rapid fitting function for bilateral contact angle measurement, providing a more comprehensive analysis of the surface wetting properties of liquids and solids and a more accurate analysis of the actual surface wetting situation.

11. Dynamic shooting and video rapid test data recording allows for continuous recording of contact angle changes, followed by automatic batch fitting by software.

12. Features a historical database function, recording each test result and allowing for traceability of historical test results.

Technical Data

Model	CA-200
Type	Scientific Fully Automatic
Body Material	Aviation Aluminum
Input Power Supply	220V 50-60Hz
Power Consumption	10W
Overall Instrument Dimension	Approx. 655mm (W) * 180mm(L)* 520mm(H)
Instrument Weight	Approx. 16KG
X Axis Left-Right Movement	Manual, Travel: 30mm, Accuracy: 0.1mm
Y Axis Front-Back Movement	Manual, Travel: 50mm, Accuracy: 0.1mm
Z Axis Vertical Lifting Movement	Manual, Travel: 30mm, Accuracy: 0.1mm
Horizontal Adjustment	Whole machine horizontal adjustment + camera horizontal adjustment (Professional XY level gauge included)
Sample Stage Size	130*150mm (Customizable)
Max Allowable Sample Size	200(W) * ∞(L) * 30(H) mm
Sample Stage Material	Aviation Aluminum
Injection Movement Travel	Y-axis: 40mm; Z-axis: 35mm, Accuracy: 0.1mm (Needle alignment & droplet transfer)
Droplet Control Travel	Travel: 60mm, Accuracy: 0.01mm
Droplet Dispensing Mode	Automatic (Cyclable, programmable, multi-point continuous testing supported)
Liquid Dispensing Precision	0.01ul
Liquid Filling Mode	Automatic (5ml glass beaker for liquid feeding included)
Micro Syringe	Volume: 500ul (Real-time automatic liquid level detection)
Needle Configuration	Standard: 10pcs 0.5mm stainless steel replaceable needles; Optional: 10pcs 0.25mm superhydrophobic replaceable needles
Industrial Camera	Original Japan SONY high-speed industrial chip (Onsemi rolling shutter)
Lens Magnification	0.7x-4.5x
Sensor Type	1/2.7 inch Global Shutter CMOS
Image Resolution	1280×1024
Focal Length Adjustment	±2.5mm adjustable
Shooting Modes	Single shot, interval shooting, continuous shooting
Shooting Interval Range	500ms – 3600000ms
Video Function	Record, playback, video synthesis
Clarity Calibration	Automatic software autofocus
Max Frame Rate	400 fps
Light Source	US imported industrial blue cold light source (Prevents droplet evaporation caused by heat radiation)
Optical Combination	Japan imported quartz diffusion film for uniform brightness and clear droplet outline
Service Life	Over 50,000 hours
Brightness Control	PWM stepless adjustment + software digital adjustment
Brightness Calibration	Exclusive Beidou algorithm auto brightness recognition for optimal imaging
Wavelength	465nm
Light Power	1W
Measurement Methods	Sessile Drop Method, Pendant Drop Method, etc.
Supporting Software	CA V2.0 Static & Dynamic Contact Angle Measurement Software + Surface Energy Calculation Software
Operating System Requirement	Windows 10 (64-bit)
Operation Mode	Automatic & Manual
Static Contact Angle Fitting Algorithms	One-click full-automatic fitting (Zero manual error), 3-point fitting, 5-point fitting; Circle / Oblique Circle / Ellipse / Oblique Ellipse / B-Snake fitting; Support concave & convex surface measurement
Dynamic Contact Angle Test	Advancing Angle, Receding Angle, Hysteresis Angle; Batch fitting for multiple images / continuous video frame analysis
Baseline Fitting	Automatic & Manual
Measurable Angle Range	0°＜θ＜180°
Measurement Accuracy	0.1°
Resolution	0.001°
Calculation Methods	Fowks, OWRK, Zisman, EOS, Acid-Base Theory, Wu Harmonic Mean, Extended Fowkes; Pre-installed database of 37 test liquids, editable liquid parameter library
Derived Parameters	Solid surface energy, dispersion force, polar force, hydrogen bonding force, van der Waals component, Lewis acid component, Lewis base component
Unit	mJ/m²
Measurement Mode	Automatic fitting + manual fitting
Accuracy	0.01 mN/m
Measuring Range	0.1 mN/m – 2000 mN/m
Analysis Indexes	Adhesion work, spreading coefficient, adhesion tension (One-click auto calculation)
Test Precision	0.001 mN/m
Unit	mN/m

Standard Accessories

No.	Accessory Name	Quantity	Unit
1	USB2.0 Digital CCD Camera	1	Unit
2	Continuous Zoom Optical System	1	Unit
3	Manual Sample Loading System	1	Set
4	Manual CCD Tilting System	1	Set
5	Surface & Interface Analysis Measurement System Application Software	1	Set
6	Paper Manual + Electronic Version Manual	1	Copy
7	Warranty Card & Quality Certificate	1	Set
8	Hydrophilic Needles, Hydrophobic Needles	10 / 10	Pcs
9	500ul Syringe	1	Unit
10	Power Cable & Data Cable	1	Set
11	Dedicated XY Level Gauge	1	Unit