
Yara N-Sensor V3.10
Operation Manual
Sensor will be reconnected automatically as soon as it is available
again.
If activated, the system will apply the uniform rate predefined in the
Agronomic calibration
menu.
Bad N-Sensor data:
The N-Sensor is physically connected, but no
valid N-Sensor data can be processed. If this icon appears for more
than two seconds, contact your local service personnel. It is normal if
it shows up for one second from time to time during operation.
Simulation mode:
The N-Sensor runs in simulation mode. In this
mode, the N-Sensor program can be run without a real N-Sensor
connected. However, no usable sensor readings are available. In ad-
dition, application rates from prescription maps (raster maps) are ig-
nored. This mode is mainly intended for demonstration and testing
purposes.
No real application must be done with this icon on the work
screen!
To disable the simulation mode and return to normal N-Sensor opera-
tion, contact your local service personnel.
Low light level:
For passive N-Sensors, the actual irradiance is too
low to receive a suitable signal from the N-Sensor optics. As soon as
irradiance conditions improve, the icon will disappear automatically.
For active N-Sensors, this icon indicates that a too low amount of arti-
ficial light is reflected into the N-Sensor optics. A reason for this may
be dirty optics or that the distance between the sensor heads and the
crop canopy is too high.
In any case the system will switch to the uniform rate predefined in
the
Agronomic calibration
menu.
Sensors over-modulated:
(active N-Sensor only) Too much light is
reflected into the N-Sensor optics. Usually this icon appears because
the distance between the sensor head and the crop canopy is too
short.
The system will switch to the uniform rate predefined in the
Agronomic
calibration
menu.
Low solar elevation:
(passive N-Sensor only) The current solar ele-
vation is below 25° above the horizon. As long as enough light is
available, the system continues to work, but accuracy may be re-
duced and recommended rates may drift over time. It is strongly rec-
ommended to finish N-Sensor work as soon as possible.
Low crop density:
The current N-Sensor reading is below the preset
biomass cutoff value (see section 5.1). As obviously other factors
than nitrogen affect the crop growth in this area, the application rate
is reduced. In the extreme cases only the minimum rate may be ap-
plied.
Last revised: 28.01.2009 14:39
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