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Fast evaluation of surface wettability in manufacturing processes by measuring the contact angle
The SITA SurfaSpector is a new hand-held measuring device for testing the wettability of metal, glass and plastic surfaces, e.g. after surface treatment or cleaning.
The device combines an objective measurement with simple handling and enables a fast evaluation of the surface.
Product description
• Automated measuring procedure including drop placement, drop detection and direct determination of the contact angle
• Handy sensor head for measuring at various parts geometries
• Simple operation via touchscreen
• Mobile use without PC directly at the plant or in the process
• Limit value monitoring in measuring profiles usable for various applications
• Optional PC software SITA-SurfaceLog for advanced measurement data visualization and export
Applications
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• Quality assurance after parts cleaning • Wettability inspection • Testing of surface activation, e.g. after a plasma treatment |
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Measuring principle
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A drop of water is precisely placed at the surface by an automatic dosing unit. The drop is illuminated from the side. A shadow of the drop is projected onto an inclined measuring surface. The projection is recorded from above by a high resolution camera and the picture is corrected for perspective. The drop shape is determined and the contact angle calculated. The lower the contact angle, the higher the wettability.
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Technical data
| Contact angle | |
| Range | 5°…175° |
| Resolution | 0.1° |
| Liquid | pure water, refillable, 5 ml for 5,000 measurements |
| Method | |
| Optical determination of the contact angle of a lying drop | |
| Drop volume | 1 μl |
| Min. sample surface | 5 x 5 mm |
| Operation | |
| Main unit | 5“ TFT-display 800 x 480 pixel, capacitive touch, intuitive grafical user interface |
| Sensor | measurement start button, LED for optical feedback |
| Power supply / interfaces | |
| Li-Ion battery |
2x 6,400 mAh, min. measurement time 6 hours |
| Power plug | 12 V, 2.5 A (max. 17 V, 3 A) |
| Interfaces, memory, Dimensions and weight | |
| USB | USB-C (data transfer, USB-C power delivery) |
| Speicher | 10 GByte |
| HxWxD / Weight | Main unit: 80 x 210 x 130 mm / 1,100 g |
| Sensor: 117 x 50 x 82 mm /330 g | |
| Accessories | |
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Calibration standard, stand |
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