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15 Calibrating ammonia sensors
15.1 Notes
15.2 General information
The calibration of ammonia sensors is based on measurements in ammonia-
free test solutions.
15.2.1 Calibration methods for ammonia sensors
Zero-point calibration
This calibration method is used to determine the ammonia zero point.
An ammonia-free test solution (e. g. water) is needed as a reference.
15.2.2 Calibration default settings for ammonia sensors
In the ammonia sensor calibration default settings, the zero-point calibration is
enabled and preconfigured as the only available calibration routine.
Open the calibration default settings:
Device menu
r Calibration r Select Analysis Input for pH/Redox/
NH
3
r Calibration Default Settings
WARNING!
During the calibration, the relays and analog output signals assume the config-
ured states! The response of the output signals is set for each output in its "Re-
sponse at calibration" configuration point.
⇨ Chapter 10.5 "Analog inputs", Page 139
Sample screen:
Ammonia calibration
default settings
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