ViscoSystem AVS - Windaus

The working principles ‘pressure’ and ‘vacuum’
The sample determines
the principle
The ViscoSystem ® AVS 350 uses
the traditional principle of
pressure, i.e. the sample to be
measured is pressed into the
viscometer with an excess pressure
of up to 0.1 bar.
Comparisons between preferred applications
ViscoSystem ® AVS 350 and ViscoSystem ® AVS 360
AVS 350 AVS 360
Highly viscous samples e.g. oils and polymers yes yes
Automatic cleaning of the
capillary viscometer
The ViscoSystem ® AVS 360 unit
can be combined with a
semi-automatic suction unit
which includes a suction pump
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(VZ 5625) and the associated
suction set (VZ 5624). The
semi-automatic suction unit
enables the viscometer to be
emptied in the bath and to
rinse it with the next sample.
(up to approx. 3000 mm 2 /s) (above approx. 3000 mm 2 /s)
Solvents: (examples) highly volatile yes no
sulphuric acid no yes
dichloroacetic acid no yes
toluene yes yes
acetone yes yes
hexafluorisopropanol no yes
m-cresol no yes
Scanning of the opto-electronically* yes yes
fluid meniscus TC sensors* yes yes
PC connection (RS-232-C) exists exists
Software WinVisco Stand alone station yes yes
* with the appropriate viscometer
The viscometer Visco-
System ® AVS 360 has
been developed for the
improved measurement of
highly viscous samples. It works
with vacuum to suction the
sample into the viscometer. The
‘vacuum’ working principle
provides the user with a greater
degree of safety: the sample
and up to 8 units
cannot splash out of the viscometer
and this means the
user is not exposed to health
risks from solvents.
Due to the vacuum principle,
the ViscoSystem ® AVS 360
makes it possible to achieve
greater reproducibility of the
measured values even when
The sample which has already
been measured is sucked into a
waste bottle and hence the
user no longer comes into contact
with dangerous solvents. A
further advantage of the semi-
highly viscous samples are
used. An additional advantage
of the AVS 360 is that the uniform
formation of the ‘suspended
sphere level’ is guaranteed
even for the minimum sample
volumes required for Ubbelohde
viscometers.
automatic suction unit is that
the viscometer no longer has
be removed and cleaned separately.
Technical specifications AVS 350 AVS 360
Measurement range (time) up to 9999.99 s; resolution 0.01 s see AVS 350
Measurement range (viscosity) 0.35 ... 1,800 mm 2 /s (cSt) 0.35 ... approx. 5,000 mm 2 /s (cSt)
Tolerance of time measurement ± 0.01 % see AVS 350
Display tolerance ± 1 Digit (0.01 s) see AVS 350
Readout six figure LED display with
floating decimal point, height = 14.2 mm;
additional LED display for
no. of measurements, height = 7.6 mm
see AVS 350
Pump pressure approx. 0.04...0.1 bar, automatically controlled approx. -0.01... -0.4 bar,
automatically controlled
Programmable temp. equilibration time 0 ... 20 min see AVS 350
Programmable no. of measurements 1 ... 10 see AVS 350
Rinsing unit connection viscometer cleaner AVS 26 upon request
Data outputs two RS-232C interfaces see AVS 350
Power supply 230 V~ 50 ... 60 Hz: power consumption 30 VA see AVS 350
(115 V~ 50 ... 60 Hz specify when ordering)
Ambient temperature 0 ... + 50 °C see AVS 350
Casing shielded plastic/steel casing
with chemically resistant two component
coating, can be stacked
see AVS 350
Dimensions 225 x 155 x 395 mm (W x H x D) see AVS 350
Weight approx. 5.2 kg see AVS 350
WinVisco-Software Stand-alone station stand-alone station
for Windows‚ 95 (or higher) or for multi-tasking with 2–8 units
Capillary viscometer The following capillary viscometers manufactured by Schott can be used to
(see separate catalogue ‘Capillary viscometers’) measure fluids without solid particles and with a viscosity between 0.35 – 10,000 mm2 /s:
Ubbelohde viscometer in compliance with DIN and ASTM, micro Ubbelohde viscometer,
Cannon-Fenske routine viscometer and Mikro-Ostwald viscometer.
We reserve the right to make technical changes.
ViscoSystem is a registered trademark of the SCHOTT group, Mainz, Germany
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