ViscoSystem AVS - Windaus

ViscoSystem ® AVS 350:
from a single measuring station to a PC-controlled
sample station with 8 samples
The ViscoSystem ® AVS 350 viscosity
measuring unit determines
the flow times of liquids
in capillary viscometers with
crystal accuracy and a resolution
of 0.01 s. Because it can
utilize two different sensory systems
(opto-electronically or TC
sensors) for meniscus detection,
the AVS 350 system is suitable
for an extremely wide range of
applications and enables transparent,black
or even completely
opaque liquids to be measured.
The ViscoSystem ®
AVS 350 automatically
repeats the measurements
and saves the measured values.
Not only can it be installed as a
stand-alone device, it can also
be connected to a PC.
A total of 8 units can be linked
together in a daisy chain to
only one RS-232C interface.
Measurement operation and
data evaluation are then controlled
by the computer allowing
the units to operate parallel.
The available PC software Win-
Visco is both versatile and user
friendly. It allows the control
and evaluation of up to 8
ViscoSystem ® AVS 350 units.
The single measuring
station
ViscoSystem ® AVS 350 is the
inexpensive starter model for
automatic viscosity measurements
of black liquids using TC
viscometers. If opto-electronic
sensors are preferred, the
appropriate measuring stand is
used.
The AVS 350 is easy
to operate as the
automatic sequence of the
measuring process reliably eliminates
subjective error sources.
Measurements are initiated by
pressing a button and the rest
is automatic. After the pre-set
temperature equilibration time
has elapsed, the specified number
of measurements are carried
out. The measured values
are displayed digitally and
saved in the unit’s memory. At
the touch of a button, all values
of a measurement sequence
can be viewed in a scrolling
mode and are available until
the start of a new measurement
series.
The automatic viscometer
cleaner AVS 26 cleans and dries
the viscometer after a measurement
series without removing
from the thermostat bath.
Usually the single station works
without being connected to a
PC. However, upon request, the
AVS 350 can be controlled by
a PC which then also evaluates
the measurement results.
The multiple sample measuring
station – PC controlled
multi-tasking
When up to 8 units are connected,
the measurements for a
number of samples – both
black and transparent – can be
taken in parallel, either all the
identical ones together or all
samples in a random sequence,
then the results can be evaluated
and documented.
A PC can be used to control
and evaluate the measurements.
The Schott Software
WinVisco supports fast viscosity
measurements, calculations and
their documentation. Users
without any previous computer
experience can learn to use
the programme quickly and
easily. More details are available
on pages 8 and 9.
Hardware and software of the
ViscoSystems ® AVS 350 combine
ease of use in the laboratory
with Schott’s experience
in capillary viscometry.
ViscoSystem ® AVS 360.
Vacuum for accurate results
A high degree of safety
with critical and highly
viscous samples
The viscometers ViscoSystem ®
AVS 350 and ViscoSystem ® AVS
360 use the same methods of
measurement, measuring in
capillary viscometers. This is the
most accurate method for
determining the viscosity of
Newtonian liquids.
There are differences in terms
of the working principles
between the two viscometers
(pressure or vacuum), the
pumps used for the measurement
process as well as the
ability to connect automatic or
semi-automatic rinsing and
cleaning units.
Comparison between viscometers
AVS 350 and AVS 360
AVS 350 AVS 360
Working principle pressure vacuum
Pump type Oscillating membrane Oscillating membrane
pressure pump vacuum pump
Pump pressure 0.04 ... 0.1 bar -0.01 ... -0.4 bar
controlled automatically controlled automatically
Automatic cleaning Connection of only upon request!
viscometer cleaner AVS 26
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