Appendix B - Calibrating Of A Ph Sensor - GO Systemelektronik BlueBox T4 Manual

B l u e B o x – C a l i b r a t i o n p H S e n s o r
Appendix B – Calibrating of a pH Sensor
The pH sensor is an electrochemical sensor. To function properly, electrochemical sensors have to recalibrate in
regular intervals. This is best done weekly, but at least a monthly.
You need two calibration fluids with different pH values, e.g. pH 4 and pH 7.
In this two-point calibration it is always the lower value first and then the higher value is measured.
The BlueBox calculates the calibration curve automatically.
The calibration fluids are available as accessories under the article no. 418 400X from GO Systemelektronik.
In addition you need clean tap water for rinsing of the electrodes between the calibration steps.
Note: The calibration procedure described here is only operable, if in the associated sensor setup window of the
AMS software the entry in the parameter field begins with "pHGlas".
1 Calibration Menu pH Sensor .................................................................................................................................................. 83
1.1 pH Sensor Calibration ..................................................................................................................................................... 84
1.2 pH Sensor Calibration Reset to Default ......................................................................................................................... 85
1.3 pH Sensor Offset .............................................................................................................................................................. 85
1.4 pH Sensor Slope ............................................................................................................................................................... 86
1 Calibration Menu pH Sensor
Sensor menu 8.2.2.1 of the pH sensor
pH cal.
Below left, the current temperature and the current pH measurement value is displayed.
Switches to the calibration.
Calib ration
Switches to the menu "pH Sensor Calibration Reset to Default"
Reset cal.
Switches to the entry of an offset value, only visible at „default pH calibration"
Offset
Switches to the entry of a slope value, only visible at „default pH calibration"
Slope
Switches back to the service menu.
<–
1 Strictly spoken it is sufficient if the entry in the parameter field contains "pHGlas". For better visibility, "pHGlas" should be at
the beginning.
see 1.2 pH Sensor Calibration Reset to Default
2
GO Systemelektronik GmbH
ph Calibration
Calib ration
Reset cal.
21.8 °C / 10.47 pH
Faluner Weg 1 24109 Kiel
www.go-sys.de
1
Offset
Slope
<–
Germany Tel.: +49 431 58080-0
info@go-sys.de
2 .
2 .
2 .
Page 83 / 99
Fax: -58080-11