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Basic Optical Contact Angle Meter

Product Item : CA-195
Category： Other
Contact Angle Meter
Optical Contact Angle Meter
Contact Angle Measurement Meter
Product description：The contact angle meter 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
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.

Technical Data

Model	CA-195
Type	Basic Model
Cabinet Material	Aviation Aluminum Alloy
Input Power Supply	220V, 50–60Hz
Power Consumption	10W
Overall Dimension	485mm (W) × 175mm (L) × 440mm (H)
Instrument Weight	10KG
X-axis (Left & Right) Movement	Manual; Travel: 30mm, Accuracy: 0.1mm
Y-axis (Front & Back) Movement	Manual; Travel: 50mm, Accuracy: 0.1mm
Z-axis (Up & Down) Movement	Manual; Travel: 30mm, Accuracy: 0.1mm
Horizontal Adjustment	Whole machine leveling & camera horizontal calibration (Professional XY level gauge included)
Sample Stage Size	130×150mm (Customizable)
Max Loadable Sample Size	150(W) × ∞(L) × 30(H) mm
Stage Material	Aviation Aluminum Alloy
Injection Axis Travel	Y travel: 15mm; Z travel: 25mm, Accuracy: 0.1mm (for needle alignment & droplet transfer)
Droplet Control Travel	Travel: 25mm, Accuracy: 0.01mm
Droplet Discharge Mode	Manual
Droplet Volume Precision	0.1μL
Liquid Filling Mode	Manual filling (5mL glass beaker supplied)
Micro Syringe	Capacity: 1000μL
Standard Needles	10pcs replaceable 0.5mm stainless steel needles; 10pcs replaceable superhydrophobic 0.25mm needles
Camera	Onsemi Rolling Shutter
Lens Magnification	0.7x–4.5x
Sensor Type	1/1.8-inch Progressive Scan CMOS
Resolution	1280 × 1024
Focal Length	±2.5mm Adjustable
Image Capture Modes	Single shot, Interval capture, Continuous capture
Capture Interval Range	500–3600000 ms
Video Functions	Recording, Playback, Image Composition
Focus Mode	Full-automatic software autofocus
Maximum Frame Rate	80 fps
Light Source Type	Domestic industrial-grade blue cold light source
Diffusion Film	High-quality domestic quartz diffusion film
Service Life	20,000 Hours
Brightness Adjustment	PWM digital regulation + software regulation
Light Wavelength	465 nm
Light Source Power	5W
Contact Angle Test Methods	Sessile Drop Method, Pendant Drop Method, etc.
Measurement Software	CA V2.0 Static & Dynamic Contact Angle Measurement Software + Surface Energy Calculation Software
Software OS Requirement	Windows 10 (64-bit)
Measurement Operation Mode	Automatic & Manual
Static Contact Angle Fitting Algorithms	One-click full auto fitting (ms-level, no manual error); 3-point fitting; 5-point fitting; Auto measurement (Circle Method / Oblique Circle Method); Ellipse Method / Oblique Ellipse Method; Concave & Convex surface measurement
Baseline Fitting Mode	Automatic & Manual
Measuring Angle Range	0° ＜ θ ＜ 180°
Measurement Accuracy	0.1°
Resolution	0.001°
Calculation Models	Fowkes Method, OWRK Method, Zisman Method, EOS Method, Acid-Base Theory, Wu Harmonic Mean Method, Extended Fowkes Method 37 kinds of liquid databases pre-installed in software; custom liquid performance parameters can be created. Liquid data can be directly loaded for surface energy estimation, and liquid library data can be added, deleted and modified freely. Calculable items: solid surface energy, dispersion force, polar force, hydrogen bond force, van der Waals component, Lewis acid component, Lewis base component, etc.
Surface Energy Unit	mJ/m²

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	Surface & Interface Analysis Measurement System Application Software	1	Set
5	Paper Manual + Electronic Version Manual	1	Copy
6	Warranty Card & Quality Certificate	1	Set
7	Hydrophilic Needles, Hydrophobic Needles	10 / 10	Pcs
8	1mL Syringe	1	Unit
9	Power Cable & Data Cable	1	Set
10	Dedicated XY Level Gauge	1	Unit