8
Automation
Highly reliable with minimal effort
The SC1 and SC30 sample delivery and cleaning units reduce the work involved in the determination
of density, refractive index, or both.
The sample delivery and cleaning units are not only the best guarantee for a fast payback, they also
help to prevent measurement errors and to save cleaning solutions.
SC1 and SC30. The decisive step
from measurement instrument to
measurement system.
Automatic sampling. The instru-
ment itself detects when the cell is
lled with sample and automati-
cally switches off the pump.
Reliable sampling. Samples are
delivered to the cell under pres-
sure and not, as often the case in
other systems, under suction. The
advantage of this technique is that
no errors occur with samples that
tend to degas (no formation of air
bubbles). Furthermore the systems
are suitable to measure samples
with a viscosity of up to 30’000
mPa·s.
Sample carryover eliminated. The
inside and outside of the sampling
nozzle is thoroughly cleaned and
dried after every measurement.
Automatic error detection. With
the SC1 and SC30 sample de-
livery and cleaning units, the DE
density meters, RE refractometers
and the DR Combined Meters are
able to automatically detect the
most frequent sources of error in
density and refractive index mea-
surements (such as air bubbles,
inhomogeneous samples or sol-
vent residues) and to warn the user
accordingly.
Changes in the sample are not
possible. The sealed sample vials
are only opened just before the
actual measurement. No evapora-
tion or contamination of the sample
is possible.
Efcient cleaning. After the mea-
surement, the system is rinsed with
two solvents. The rst solvent is to
remove the sample; the second is
a solvent of high vapor pressure
to dry the system completely. Both
solvents are mixed with air and
pumped through the system at
high speed. The resulting pulsed
ow provides a very efcient me-
chanical cleaning.
Special applications – no problem
at all! The SC1 and SC30 sample
delivery and cleaning units can
return the samples back into the
vial after the measurement. The
samples may thus be used for other
purposes after the determination of
the density and/or refractive index.
In cases where the density of
samples which are very highly
viscous or even solid at ambient
temperature have to measured, the
SC1 and SC30 may be equipped
with electrical heating.
SC1 SC30
Pump mode overpressure overpressure
Number of samples 1 (20, 9 or 6 mL) 30 (20, 9 or 6 mL)
Maximum sample viscosity 30’000 mPa·s 30’000 mPa·s
Minimum sample volume 3 mL for DE/RE, 6 mL for DR 3 mL for DE/RE, 6 mL for DR
Sample vial detection - automatic
Rinsing automatic, 2 solvents automatic, 2 solvents
Drying automatic automatic
Sample recovery automatic automatic
Automatic switching off - programmable
Temperature control electrical heating (option) electrical heating (option)
Technical Data SC1/SC30
(16 stránky)
(2 stránky)
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