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AURA handheld NIR – 2289-971 and 2298-955 | User Manual
Application note
AURA handheld NIR
Measurement software
When the device is started, the ZEISS InProcess software is started
automatically. The operating system of the internal computer can only be
accessed by ZEISS customer service. Nevertheless, software updates can
be performed by every customer by means of another computer. Detailed
information can be found in the InProcess user manual.
Multiple single measurements or continuous scan?
The user is free to set-up a suitable method to examine the samples
correctly. Two methods have been established: multiple single
measurements and a continuous scanning measurement suitable for
scanning larger areas. Product templates for both methods are available in
the InProcess software.
Measuring procedure
A measurement is generally triggered by pressing the “Start measurement
button” on the handle. The status LED on the back of the AURA handheld
NIR changes from green (sensor is ready) to yellow (internal referencing in
progress) to green, flashing (sensor is measuring).
When using the continuous scan mode, the LED is continuously flashing
in green. The sensor should be moved through the sample steadily and
with constant pressure to get reliable results. The measuring time in the
continuous scan mode should be at least 10 seconds.
When the measuring button is released, the scan ends, and an average
value is shown on the display.
Please note: When scanning over uneven surfaces (e.g. tobacco leaves
with ribs) there is a risk of tilting the sensor and thus falsifying the average
values. When scanning powdery substances which are fine ground (e.g.
coffee powder), the continuous scanning has disadvantages, since the
sample can be pushed aside by the movement of the sensor and the
sensor could sink into the powder.
