Teledyne T100 Manuale Utente

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Calibration Procedures 
Teledyne API - T100 UV Fluorescence SO2 Analyzer  
202 
With dynamic calibration turned on, the state of the internal setup variables 
DYN_SPAN and DYN_ZERO is set to ON and the instrument will reset the slope and 
offset values for the SO
2
 response each time the AutoCal program runs. This continuous 
re-adjustment of calibration parameters can often mask subtle fault conditions in the 
analyzer. It is recommended that, if dynamic calibration is enabled, the analyzer’s test 
functions, slope and offset values be checked frequently to assure high quality and 
accurate data from the instrument. 
9.9. CALIBRATION QUALITY 
After completing one of the calibration procedures described above, it is important to 
evaluate the analyzer’s calibration SLOPE and OFFSET  parameters. These values 
describe the linear response curve of the analyzer. The values for these terms, both 
individually and relative to each other, indicate the quality of the calibration. To perform 
this quality evaluation, you will need to record the values of both test functions (refer to 
Section  4.1.1 or Appendix A-3), all of which are automatically stored in the DAS 
channel CALDAT for data analysis, documentation and archival. 
Ensure that these parameters are within the limits listed in the following Table. 
Table 9-5:  Calibration Data Quality Evaluation 
FUNCTION 
MINIMUM VALUE 
OPTIMUM VALUE 
MAXIMUM VALUE 
SLOPE 
-0.700 1.000  1.300 
OFFS 
50.0 mV 
n/a 
250.0 mV 
These values should not be significantly different from the values recorded on the 
Teledyne API Final Test and Validation Data sheet that was shipped with your 
instrument. If they are, refer to troubleshooting in Section 12. 
06807C DCN6650