triOS nanoFlu, Operating Instructions Manual

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20 D01-060en202008 Manual nanoFlu
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Calibration
Calibration // nanoFlu
5 Calibration
5.1 Manufacturer Calibration
All TriOS sensors are delivered calibrated. The calibration factors of the nanoFlu are stored in the sensor,
meaning that all values that are output are calibrated values.
The conversion from the original measurement parameter to the scaled measurement parameter is carried out
by means of the following equations.
The offset and scaling factor are stored in a sensor for the measurement parameter.
The manufacturer calibration of the sensor is carried out as follows:
• The offset is determined by measuring in ultra-pure water (free of humic and fulvic acid, 18.2 MΩcm
water)
A = Raw - Offset
• The scaling factor for each measurement range is determined by using the respective calibration stand -
ard.
B = A ∙ lin
with
A offset corrected value
Raw raw data
Offset
offset value
B
concentration of the substance in physical units
lin scaling factor
The manufacturer calibration should not be changed!
5.2 Customer Calibration
The sensor can be adapted to laboratory analyses and local conditions with other calibration factors. This is
set using the scaling function of the controller or directly in the browser of the sensor. To do this, open the
“Measurement” submenu in the browser. The customer calibration or local calibration works in addition to the
manufacturer calibration, whose values are not changed by the customer calibration.