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Contact
angle measuring device for the automatic measurement of the
wetting behavior of solids, as well as for series tests and
systematic analysis. The OCA 20 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:
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static and dynamic
contact angle according to the Sessile and Captive
Drop method
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analysis of the drop
shape according to the Pendant Drop method
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wetting behavior on
solid surfaces
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surface free energy
of solids and their components
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surface and
interfacial tension out of the analysis of the drop
shape
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movie function and
dynamic tracking for absorption kinetics study
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great modular concept
design provides a future upgrade and operational
flexibility
The
OCA 20 consists of the basic instrument with the following
technical equipment:
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Dosing
bay for installation of the electrical syringe units
and single or multiple (max. 4) needle support with a
vertical and horizontal fine adjustment
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Measuring
stage is adjustable 3-dimensionally in X, Y- and Z-
axis for accurate sample positioning and drop pick up
from the dosing needle (upgradeable to a motorized
sample stage)
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Lens
mounted with adjustable tilt
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High-performance
six-fold power zoom lens with an integrated continuous
fine focus
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High-speed
video system with adapter and CCD-camera
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High-performance
video digitizing board (frame grabber) for the PC
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Halogen
lighting with continuously adjustable intensity
without hysteresis for a homogeneous back lighting
which facilitates operations under any lighting
environment
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Control
and measuring electronics with built-in digital
temperature display and serial RS 232C interface
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Power
supply with an automatic voltage adjustment function
The 32-bit modular Windows
NT based software SCA developed for Windows 2000/XP
offers by various expansion steps. The analyses
according to different methods were build-in the software.
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