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6.0 AUTOMATIC TEMPERATURE COMPENSATION
Automatic temperature compensation corrects readings
over a range of temperatures. As an example: Samples
taken at 15
o
C – 40
o
C are corrected to a reference
temperature reading of 20
o
C. Temperature correction or
control is necessary because refractive index varies
inversely with temperature, as temperature of sample
rises refractive index falls and so as sample temperature
drops refractive index will rise. This feature can be used
in lieu of controlling the temperature of the prism and
sample. It is however necessary to Allow Samples to
Temperature Equilibrate (sample must reach same
temperature as prism surface) so that the AR200 can
properly correct for temperature.
The automatic temperature compensation mode built
into the AR200 is based on the temperature coefficients
( ∆nD/∆
o
C) of sucrose, per the ICUMSA scales. When
readings are taken in Index-TC (Refractive Index-
Temperature Compensated) mode the reading is only
valid for Sucrose (Brix) solutions.
6.1 Temperature Coefficient Calculations (non-Sucrose
samples)
Should you need to temperature correct refractive index
values for samples other than those that are sucrose
based. Please download “Temperature Coefficient
Calculation and Temperature Correction” at
www.reichert.com Analytical/Applications, or contact
Reichert Analytical Technical Support ,716-686-4500.
7.0 INSTALLATION PROCEDURE
A. Unpack instrument from carton. Retain packing material
for future storage/protection/shipping.
B. Please note the following accessories:
Instruction Manual
Batteries, four AAA
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