ACA 50

Fully Automatic/Programmable Video-Based Contact Angle Scanning Measurement System

Contact angle measuring device for the fully automatic and programmable measurement of the wetting behavior of solids (e.g. wafers or glass substrates for flat panel displays) under clean-room conditions, as well as for series tests and systematic analysis. The ACA 50 enables the reduction of subjective factors and time involved for contact angle measurements in research, quality and production inspection. 

For the software-controlled measurement and analysis of

• Static and dynamic contact angle according to the Sessile and Captive Drop method.

• Analysis of the drop shape according to the Pendant Drop method.

• Wetting behavior on solid surfaces.

• Surface free energy of solids and their components

• Surface and interfacial tension out of the analysis of the drop shape.

• Single needle support or optional a multiple needle support (max. 6 dosing needles and electronic syringe units) with fully automatic needle selection and vertical and horizontal positioning
• Measuring stage, fully automatic adjustable in three axis for accurate sample positioning
• Lens mount with motorized adjustable tilt 
• Video measuring system with high-resolution CCD-camera
• Motorized powerful 7-fold zoom lens with software controlled magnification, aperture and focus
• High-performance video digitizing board (frame grabber) for the PC
• Illumination with continuously adjustable intensity for a homogeneous back lighting
• Control and measuring electronics for the teach-in procedure, graphic display with keyboard and video display
• Power supply with automatic voltage adjustment

The 32-bit  Windows NT based software SCA50 developed for Windows 2000/XP offers by various expansion steps. The analyses according to different methods were build-in the software.

Application Notes related to this Instrument