Specifications

PROPRIETARY DATA: This document contains proprietary data of ABB Inc. No disclosure, distribution (electronic or otherwise),
or other means of dissemination may be made without written permission.
3BUS 208 000 R1301130 Measurement Setup
Gloss Sensor Head Constant Tuning
The gloss head constants are adjusted so that the sensor will correlate to the
laboratory measurements. Since the instruments used in the lab will read slightly
different from one to another, the head constants determined in Columbus are
attached to the sensor, but are marked as approximate numbers.
The following interactive procedure is to be used to fine tune the sensor response
to the customer’s lab. It uses two lab sample readings which are entered by the user,
and the results of the sample check readings on the same two samples. The
recalibration routine is selected interactively using genrpt. After running the
routine, and there are no errors, the newly computed head constants are stored in
memory. The user must save the new values to RAM disk in the frame community
by using the gstore utility.
Note: This procedure involves a series of interactive steps including work
at the console and performing sample checks. Before starting, read
through the entire procedure making sure that all resources and time
are available to complete the procedure without interruption.
1. Ensure that the laboratory instrument is calibrated with the calibration standards
that come with it.
2. Read the Gloss sensor’s check samples on the laboratory device, noting the
proper measurement area and direction of measurement. Take several readings
and calculate the average.
3. Allow the Gloss sensor to thermally stabilize for at least two hours. Clean the
windows and standardize.
4. Place the Gloss sensor in sample check mode 1 from the Host computer.
5. Activate genrpt for the Gloss sensor and select recalibration by entering a 3.
6. Enter the average Lab 1 sample value at the prompt.
7. Run a sample check on the same sample used for Lab 1.
8. Enter the average Lab 2 sample value at the prompt.
9. Run a sample check on the same sample used for Lab 2.
10. The new head constant values will be reported.
If there are no errors, the user will be instructed to write the values to diskette
using the gstore utility.
11. Exit the sample check mode when completed.
Error Conditions
• The absolute value of the difference between the two lab values
(Lab 2 - Lab 1) is less than or equal to 15.
• Calculated head constant GL1HC1 is less than 5 or greater than 50.
• Calculated head constant GL1HC2 is less than -15 or greater than 15.