The Optical contact angle measuring- OCA 50 is the fully automatic measuring device for the time-saving analysis of the wettability of solid surfaces and the determination of the surface energy of solids. The sample table of the OCA 50 can be positioned along all three directions in space via electronic high-performance axes, with both extraordinary speed and highest precision. Combined with an electronic multiple direct dosing system DDE/x and up to four electronic syringe modules ESr-N the determination of surface parameters can be automated completely. The automation of measurements succeeds easier than ever before thanks to the intuitive automation dialogue of the OCA software and its visual drop positioning system. Hence it is possible to determine, for example, the surface energy with four test liquids at different position of even large samples without any manual user intervention. This facilitates a complete and automated sample mapping.
In order to map silicon wafers, electronic turn tables with vacuum fixation are available. They allow to access any position for contact angle measurements, even on 12″ wafers. In any case, the 6.5-fold zoom lens and the high-performance camera with USB 3 interface ensure optimal images of the deposited drops. For a fast and intuitive device control, even during complex measurements, the TP 50 control panel with touch screen and precision control wheel is included with every OCA 50.
Features of Optical contact angle measuring- OCA 50
- sample table adjustable in all three directions in space with electronic high-performance axes
- high performance 6.5-fold zoom lens
- integrated continuous fine focus, and adjustable observation angle
- video measuring system with high-performance camera using USB 3 interface
- LED-lighting with manual and software controlled intensity including automatic temperature drift compensation
- included TP 50 control panel with touch screen and precision control wheel
Technical Specification
| Contact angle | ○ |
| measuring range | 0 … 180° |
| accuracy | ± 0.1° |
| resolution | ± 0.01° |
| Surface and interfacial tension | ○ |
| measuring range | 0.01 … 2000 mN/m |
| resolution | ± 0.01 mN/m |
| Surface energy | ○ |
| Liquid bridge analysis | ○ |
| Oscillation / relaxation | ○ |
| Topview contact angle | ○ |
| Sample table | electronic precision axes |
| traversing range (X-axis [mm] x Y-axis [mm] x Z-axis [mm]) | 100 x 105 x 50 |
| traversing speed (X-axis) | 75 nm/s … 18 mm/s |
| traversing speed (Y-axis) | 75 nm/s … 21 mm/s |
| traversing speed (Z-axis) | 75 nm/s … 20 mm/s |
| positioning resolution | ± 39 nm |
| max. sample weight | 10.0 kg |
| LED-lighting with manual and software-controlled intensity including automatic temperature drift compensation | |
| warm-white LED (3000 K) | ● |
| monochromatic red LED (660 nm) | ○ |
| monochromatic blue LED (465 nm) | ○ |
| Temperature and environmental control | |
| temperature chambers (-30 °C to 700 °C) | ○ |
| electrical needle heating device (RT … 700 °C) | ○ |
| humidity generator of the HGC series | ○ |
| Optics | |
| 6.5-fold zoom lens with integrated manual focus (± 6 mm) | ● |
| 10-fold zoom lens with software-controlled focus (± 4,5 mm) and observation angle (-9° … +2°2‘) | ― |
| field of view (X min x Y min) … (X max x Y max) | |
| (1.11 mm x 0.83 mm) … (7.14 mm x 5.35 mm) | ― |
| (2.50 mm x 1.33 mm) … (16.09 mm x 8.55 mm) | ● |
| (1.12 mm x 0.58 mm) … (11.29 mm x 5.98 mm) | ― |
| Camera system | |
| USB 3 camera, 1/3″ sensor
max. resolution 1440 x 1080 pixel with 227 frames/s, max. frame rate 3246 frames/s |
― |
| USB 3 camera, 2/3″ sensor
max. resolution 2048 x 1088 pixel with 170 frames/s, max. frame rate 4276 frames/s |
● |
| high-speed camera system | on request |
| TP 50 control panel | ● |
| Dimensions (L [mm] x W [mm] x H [mm]) | 680 x 310 x 370 |
| Weight | 26 kg |
| Power supply | 100 … 240 VAC;
50 … 60 Hz; 70 W |
- integrated ○with optional software/accessory ― not available
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