Infratec™ 1241 Grain Analyzer
2:8 Service Manual 1001 5015 / Rev. 4
2.2.4 CompactFlash Disk
Type II CompactFlash™ Memory
The CompactFlash memory is preinstalled with latest OS version and ISW software.
As spare part it is available as Basic 1 configuration only.
The Flash Disk is an electronic memory mounted in a slot on the Processor Board.
Due to market conditions you may find different sizes in the instruments over the
years. There is no problem upgrading the Flash Disk to a larger size. The disk is
partitioned in three parts, 5 Mb for the operative system, 5 Mb for ISW. The
remaining space is for data.
The Basic Concept
2.2.5 Monochromator
The Monochromator is developed and manufactured by FOSS. It is to be considered
a closed, factory calibrated box. There is under no circumstance any reason to open
it for maintenance, inspection or other purpose. On the contrary an opened
monochromator will not be covered by warranty, neither will it be accepted in the
exchange part system. The monochromator is the only spare part in the Infratec that
is enrolled on the spare part exchange system.
In the Infratec the monochromation of the "white light" from the lamp is done before
the sample. This technology is called pre-dispersive monochromation. This is
optimal when using transmission of light through the sample, e.g. for grain analysis.
A disadvantage of this technology is that the system becomes very sensitive to stray
light from the environment, e.g. sunlight and fluorescent light from the ceiling.
In the Infratec the light from the light source (the instrument lamp) is transported in
an optic fiber bundle into the heart of the monochromator. This fiber bundle consists
of thousands of randomized fibers. A lamp change will therefore not affect the output
of the fiber bundle and thus makes it un-necessary to linearize after the lamp is
change. The fibre optic cables are sensitive to sharp bends and should be treated with
care.
Inside the monochromator the lamp light is split up (monochromated) in a diffraction
grating. The grating is turned by a motor so that only one wavelength is exiting the
monochromator at any given time. The grating is producing a spectrum covering the
wavelength range from 570 to 1100 nm. The bandwidth is 7 nm.
At the out put there is a second fiber bundle to transport the monochrome light over
to the right side of the instrument where the sample cell is located.
P15 I
2
C Bus Power Supply Board
Model # of allowed AppM's # of allowed parameters
Full Many Many
Basic 1 One Three
Basic 2 Two Three per AppM
Basic 3 One Six
Basic 4 Two Four per AppM
Basic 5 Five Four per AppM
Basic 6 Six Four per AppM
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