Specifications

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3BUS 208 000 R1301 149Measurement Setup
Table 6-28 Default Sensor Temperature Coefficients
6. Adjust the air pressure to the air wipes up to 35 psig (pounds per square inch
gauge).
7. Place the system in Sample Check Mode to verify off–sheet stability.
8. Move the sensor to the off–sheet position and let it stabilize for 10 minutes.
9. Clean the sensor windows and then perform a clean standardize.
10. Perform several sample checks without a sample in the air gap. Check the
values of PPT and STANDARD WT on the Sample Check Report.
•The specification for STANDARD WT is 0.0
± 0.2 gram.
•The specification for PPT at clean standardize is 1000 ± 0.5.
If the values for STANDARD WT and PPT do not meet these
specifications, there is a basic problem with the basis weight measurement
such as:
•Broken or dirty window on the beta sensor
•Incorrect head constants
•Air Wipes are not set up properly
These conditions will have to be corrected before fine tuning ATC.
11. Take the system out of the sample check mode and turn on ATC by setting the
variable BetaSensor0x->tempCompFlag to 1.
12. Perform a clean standardize immediately after ATC is turned on.
13. Let the measurement heads scan over the process for approximately 30 minutes.
14. Move the heads to the off–sheet position. Perform several more sample check
measurements on air.
15. Compare the check sample readings before and after the air wipes are turned on.
The basis weight measurement from the check sample readings, before and after
the air wipes are turned on, should not vary by more than 0.2 G/M
2
.
If the basis weight measurement does not meet this specification, then fine tune it
by adjusting dBWDT. Refer to the procedure on page 150.
Variable TLK5 TLK8 TLK9 TLP1
temperatureCoefficients 1 0.0 0.09765 0.1758 0.0
temperatureCoefficients 2 0.5859 0.09375 0.2148 0.1953
temperatureCoefficients 3 -0.3477 0.2813 0.0 0.1953
temperatureCoefficients 4 0.0 0.0 0.0 0.0
dBWdT -0.1 -0.1 -0.1 -0.1