Calibration Procedures Model 100E Instruction Manual
142 045150102 Rev XB1
functions, slope and offset values be checked frequently to assure high quality and
accurate data from the instrument.
7.9. 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 (Section
6.2.1 or Appendix A-3), all of which are automatically stored in the iDAS channel
CALDAT for data analysis, documentation and archival.
Make sure that these parameters are within the limits listed in Table 7-5.
Table 7-5: 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 T-API
Final Test and Validation Data sheet that was shipped with your instrument. If they are,
refer to the troubleshooting Chapter 11.
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