| The Model 200
is an instrument for the affordable
budget starting into the contact
angle measuring technique and
drop shape analysis, for the
software-controlled measurement
and analysis of : 
The static and dynamic contact
angle according to the Sessile
and Captive Drop method as
well as the analysis
of the drop shape according
to the Pendant Drop method
The wetting behavior on solid
surfaces
The surface free energy of
solids and their components
The surface and interfacial
tension out of the analysis
of the drop shape
The Model 200 consists of
the basic hardware with the
following technical features:
Basic platform with needle
holder and syringe support
Homogeneous LED back lighting
electronics with continuously
adjustable intensity
Measuring stage , adjustable
in three axis for the accurate
sample positioning
Adjustable tilt optics
High-performance six-fold
zoom lens with an integrated
continuous fine focus
High performance 1280 x 1024
pixel USB 2.0 camera
Manual or auto dosing unit
with fine adjustable syringe
Integral X-Y-Z fine adjustable
needle holder
The Model 200 Software developed
for Windows NT/2000/XP offers
by various expansion steps:
1.
Static and dynamic contact
angle measurement according
to the Sessile and Captive
Drop method
2.
Sessile Drop method using
4 different fitting algorithms
: Laplace-Young Fitting, Circle
Fitting, Conic Fitting,
Polynomial Fitting (Tangent
Fitting)
3.
Surface tension and interfacial
tension of a liquid/liquid
system can be determined by
using the Pendant
Drop (or Rising Bubble) method
and/or Captive Bubble method
4.
Auto baseline detection with
manual curved-surface baseline
function
5.
Movie video recording or computation
functions with rate of 50
- 60 fps for dynamic study
like absorption,
spreading, reaction kinetics,
software trigger function
with recording and playing
speed, time
settings etc.
6.
Gauge ball, needle or known
liquids calibration function
7.
Result Data Center for storing,
managing, analyzing and exporting
measuring data by user-defined
tasks
or drops basis, computation
results with display items
settings and graph view
8.
Surface free energy computation
with methods Wu, Zisman plot,
Owens-Wendt, Fowkes, Extended
Fowkes,
Acid-Base, Equation of State
etc. using chemical substances
and test samples database
9.
Wetting behavior analyzer
for building wetting envelopes
on all SFE methods
Technical Data:
Size of the sample stage:
standard 100 x 100 mm, options
360°rotational sample stage
Maximum sample size (W x L
x H): 20 x μ x 10 cm
Size of the device (L x W
x H): 50 x 20 x 35 cm
Range of contact angle measuring:
0~180° ± 0.1°
Range of surface and interfacial
tension: 0.01 ~ 2,000 mN/m
± 0.05 mN/m
Optics: High precision 6X
parfocal macro video zoom
lens with an integrated continuous
fine focus
Resolution: 1280 x 1024 pixel
high resolution / high speed
USB camera
Weight: 18.0 kg |
