UltraScan PRO Supplemental Manual for EasyMatch QC Ver. 2.0
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Figure 19. Setting Top of Scale TTRAN
Note: Closing the transmittance compartment door while making transmittance
measurements is the best practice for this instrument. However, when measuring the
transmittance of liquids that are volatile and/or toxic, it may be more important to
measure the samples quickly than to eliminate ambient room light. To see if leaving
the door open will adversely affect your color measurements, standardize the
instrument in the desired transmittance mode with the transmittance compartment
door closed, then measure either air or a typical sample with the door open and then
with the door closed. Compare the measurements. If the difference is acceptable under
your measurement method, you may measure your samples with the door open. This
test should be repeated if the instrument is moved to a new location
.
Sensor
>
Setup Mode (UV Filter)
Each UltraScan PRO is factory fitted with a UV filter to exclude UV content in a measurement. The
procedure is to standardize in 2 modes
–
one with the UV Filter Out-Of-View and one with the UV Filter
In-View for comparison. In this way, a numerical value for the ultraviolet contribution can be
documented.
Figure 20. UV Calibration Mode Settings
•
UV Filter Nominal
position is set at factory and never changed. All Diagnostic test programs
are run with the UV Filter in the Nominal position to establish a consistent optical path for
the test across a model line. Some instrument models have motorized UV Control as an
option. If the instrument does not have the option, the UV Filter will be fixed at the Nominal
