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OCA
40 Micro
Video
based, automatic Fiber Contact Angle Measuring Device
Contact
Angle Meter for the automatic measurement of wetting
properties of fibers and other samples with microscopic
dimensions, as well as for series tests and systematic
analysis. The OCA 40 Micro 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
contact angle according to the generalized
Length-Width-method for the Drop-on-Fiber setup
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Dynamic
contact angle according to the Lamella-Ring-method
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Static
and dynamic contact angle on microscopic samples
according to the Sessile-Drop-method
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Determination
of the surface free energy of solids and their
components
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For
fiber diameter in the range of 5 to 150 痠
(extended Range
from 3 to 250 痠)
OCA
40 Micro is consisting of:
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Dosing
bay for installation of optional electronic precision
micro dosing units and a single - or a multiple dosing
set up (max.
4 micro-dosing needles) with vertical and horizontal
fine adjustment
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Software
controlled fiber holder - for the exact fiber
positioning und automatic droplet creation on a micro
dosing needle, in X- and Y-axis manual adjustable
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Lens
mount with adjustable tilt
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High-performance
fifty-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
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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 automatic voltage adjustment
The
32-bit Windows NT based software SCA 20/24 developed for
Windows 2000/XP
offers various expansion steps:
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Control
of the fiber holder in Z-direction, the electronic
syringe modules and temperature control units
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Static
and dynamic contact angle measurement according to the
generalized Length-Width-method for the Drop-on-Fiber
setup, the Lamella-Ring-method and the
Sessile-Drop-method
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Calculation
of the surface free energy of solids and their
components (e.g. dispersion, polar and hydrogen bond
force contribution, acid and base portions respectively)
according to the different theories.
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Statistics
and measurement error analysis
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