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2.5.2 Temperature data
DESIGNATION
TEMPERATURE MEASUREMENT
TEMPERATURE MEASUREMENT RANGE
TEMPERATURE MEASUREMENT
ACCURACY
TEMPERATURE COMPENSATION
TEMPERATURE MEASUREMENT
RESOLUTION
2.5.3 Electrical data
DESIGNATION
OPERATING VOLTAGE
2.6
Measurement principle
The refractometer measures the refractive index nD of the sample. The refractive index
changes according to the concentration or type of sample.
Figure 4 – Schematic depiction
The refractive index is determined from the position of these areas. In addition to the
refractive index, the temperature at the prism is also determined and used for the
automatic temperature compensation.
For more information see
Instruction Manual DR201-95
KEY DATA
Integrated temperature sensor
10–40 °C
±0.5 °C
10–40 °C
0.1 °C
KEY DATA
1.5 V
Campus Refraktometrie
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Version 3.1 © A.KRÜSS Optronic 2022
The sample is placed on the prism
using a pipette. The beam of light
of an LED shines through the
prism onto the sample. Depending
on the limiting angle of total
reflection, which varies
depending on the sample, an
illuminated and an unilluminated
area are created on a
photodetector.
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Page 10 of 30
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