NiCaVis 705 IQ TS
Measurement / Operation
25
ba77189e01
05/2017
4.2
Measurement operation
Measured value
display
Fig. 4-2
Factors affecting the
measured values
The following factors can adversely affect the measurement quality:
The measuring gap is not sufficiently filled and flowed through by the test
sample
Foreign bodies and air bubbles are in the measuring gap
Extraordinary changes (interferences) of the sample matrix
Contaminated measurement windows due to difficult sample matrix
Damaged measuring windows
Lacking quality of the zero adjustment, e. g. due to contaminated ultrapure
water
The user calibration is not representative (or erroneous)
4.3
Calibration
4.3.1 Overview
In the delivery condition, the sensor is precalibrated and ready to measure (see
section 3.4.1).
There are two types of calibration that are included into the calculation of the
measured value at different points (see section 4.1):
User calibration (see section 4.3.2)
CAUTION
Never look into the measuring window or put objects into the
measuring window during operation! The emitted UV radiation
can damage the eyes!
In the case of authorized use, inadvertent eye contact with the
light beam is not possible.
Raw value,
identifiable by #
Measured value
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