B l u e B o x – M e n u O p e r a t i o n
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8.2.2.1.1 Calibration
General information about sensor calibration:
How a sensor is calibrated naturally depends on the prop-
erties of the respective sensor. Calibration
1
is carried out via the menu operation on the BlueBox or with the
program AMS as part of the BlueBox PC Software. The result is a calibration polynomial of nth degree. The
calibration polynomial can also be entered or changed directly with AMS, but usually the calibration poly-
nomial is automatically generated after comparison with calibration measurements at certain measuring
points. A calibration measurement value is the moving average of the measurement value from the last 15
seconds
2
. The calibration is stored in the respective sensor module.
Sensor menu 8.2.2.1
Starts the calibration procedure.
The menu operation of the BlueBox makes it possible to calibrate sensors in the connected state. The calibra-
tion procedure is password-protected, see
7 Switching On the BlueBox and Password Input
.
For most sensors, the calibration procedure is preset, examples see
Appendix B – Calibrating of a pH Sensor
or
Appendix C – Calibration of a Galvanic Oxygen Sensor
.
If the calibration procedure is not pre-set, you can press the button <Calibration mode> and select between
three simple calibration modes.
Sensor menu 8.2.2.1
Opens the above-mentioned calibration mode selection menu.
GO Systemelektronik recommends using the factory default settings
Calibration mode one point calibration with a calibration line
through the zero point.
The button is also a status indicator.
Calibration mode one point calibration with a calibration line
whose y0 value is given by the calibration factors of the sensor.
The button is also a status indicator.
Calibration mode two point calibration
The button is also a status indicator.
Switches back to the Sensor menu.
1
Strictly speaking, the sensor is already pre-calibrated via the sensor module.
2
Strictly speaking, these are the last 15 measurement values, but since all connected sensors (Strictly speaking all but the ISA
spectrometer) are automatically set to a measurement interval of one second during calibration, it's the moving average of
the last 15 seconds.
Calibration
Calibration mode
<–
Single point calibration y0=0
Single-point calibration y0=fix
Two-point calibration
One point calibration y0=0
One point calibration y0=fix
Two point calibration
<–
