HunterLab EasyMatch QC, User Manual

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EasyMatch QC User’s Manual Version 2.1
UltraScan VIS 11G-41
UltraScan VIS Maintenance and Testing
The UltraScan VIS does require some maintenance. This chapter outlines the parts of the UltraScan VIS
you must maintain in order for the instrument to function properly and tests that you may run to assess
its performance.
Notice: Do not disassemble the instrument and attempt to clean the optical
components. Do not open the instrument or remove any covers except using the
instructions given in this User’s Manual, the EasyMatch QC help file, or under the
direction of HunterLab Technical Support.
Running the Repeatability Test
You may test the repeatability of your instrument as follows:
1. Turn the UltraScan VIS on and allow it to warm it up for 2 hours. Meanwhile, clean the white tile as
described on page 11J-44 and allow the tile to return to room temperature.
2. Follow the instructions given in the Sensor Menu chapter, Diagnostics section to run the
repeatability test that is built into EasyMatch QC.
Running the Green Tile Test
The green tile is not used during the standardization process. Instead, the green tile is used to verify the
long-term performance of your instrument. Perform the green tile test described in the Sensor Menu
chapter, Diagnostics section once a week. You can then examine all green tile readings periodically and
see any trends that develop over time.
The UltraScan VIS should be in its standard configuration, RSIN mode with the large area view (1.000-
inch/25.400 mm) port plate installed and UV filter nominal, when these readings are made. The
illuminant and observer used in your display must match those on the green tile.
The green tile reading should vary by no more than
±
0.15 XYZ units from the values given on the tile.
If your reading is out of this specification, first clean the standard tiles as described on page 11J-44.
Then standardize and measure the green tile again. If the reading still does not meet this specification,