The
OCA 20 is 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:
- 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
- Movie
function and dynamic tracking for absorption kinetics study
- Great
modular concept design provides a future upgrade and operational flexibility
The
OCA 20 consists of the basic instrument with the following technical
equipment:
- Dosing
bay for installation of the electrical syringe units and single or
multiple (max. 4) needle support with a vertical and horizontal fine
adjustment
- 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)
- Lens
mounted with adjustable tilt
- High-performance
six-fold power zoom lens with an integrated continuous fine focus
- High-speed
video system with adapter and CCD-camera
- High-performance
video digitizing board (frame grabber) for the PC
- Halogen
lighting with continuously adjustable intensity without hysteresis
for a homogeneous back lighting which facilitates operations under
any lighting environment
- Control
and measuring electronics with built-in digital temperature display
and serial RS 232C interface
- Power
supply with an automatic voltage adjustment function
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