Tintometer 15150001, Инструкция по эксплуатации

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XD 7500 Operation
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4.5.11 Automatic Turbidity correction
The Turbidity correction function activates the automatic recognition and
compensation of the light absorption caused by turbid substances.
After activating the function remains permanently switched on. Measured val-
ues that were measured with
Turbidity correction are labeled with [TURB]
(turbidity correction) on the display and in the documentation (printout and
memory).
The Turbidity correction function is not active in the delivery condition.
Switching on the
turbidity correction
The automatic turbidity correction is activated and deactivated in the setting
menu of the concentration measurement (see Section 4.5.6 S
ETTINGS FOR
C
ONCENTRATION MODE
).
4.5.12 Programming / modifying user-defined methods
Overview For Concentration mode, you can develop and store your own user-defined
methods under the method numbers 1001 to 1100. The photometer software
supports you when creating the methods.
Calibration data and
calibration function
In photometry, the calibration function describes the dependency between
the measured parameter (e.g. concentration) and the photometric measure-
ment result (e.g. absorbance) of a sample. The knowledge of this depen-
dency is a prerequisite for the development of a photometric method. The
calibration function is usually determined by means of a series of measure-
ments with standard solutions of known concentrations (nominal value), e.g.
a 10-point calibration.
Line types The dependency between the nominal value and absorbance is often linear
in a wide range as shown in the following example:
The setting for automatic turbidity correction is used with all
methods where the automatic turbidity correction makes sense.
The photometer automatically decides whether or not to use the
function.
With turbidity values that are too high and turbidity correction
switched on, the measurement result is marked in red in order to
indicates the increased uncertainty of the result.
In measuring operation, the reverse calibration function is used
to output the measured absorbance as a concentration value.