Teledyne t320u Manuale Utente

Calibration Procedures 

Teledyne API – Model T300/T300M CO Analyzer 

218 

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 (see Section 3.4.3 or Appendix A-3), all of which are automatically stored in 
the DAS channel CALDAT for data analysis, documentation and archival. 

Make sure that these parameters are within the limits listed below and frequently 
compare them to those values on the Final Test and Validation Data Sheet that came 
attached to your manual, which should not be significantly different.  If they are, refer to 
the troubleshooting Section 11. 

0.700 1.000 1.300 

-0.500 0.000  0.500 

These values should not be significantly different from the values recorded on the Teledyne API’s Final Test 

 that was shipped with your instrument.   

If they are, refer to the troubleshooting 

The default DAS configuration records all calibration values in channel CALDAT as 
well as all calibration check (zero and span) values in its internal memory.   

  Up to 200 data points are stored for up to 4 years of data (on weekly calibration 

checks) and a lifetime history of monthly calibrations.   

  Review these data to see if the zero and span responses change over time.   
  These channels also store the STABIL value (standard deviation of CO 

concentration) to evaluate if the analyzer response has properly leveled off during 
the calibration procedure.   

 Finally, 

the 

CALDAT channel also stores the converter efficiency for review and 

documentation. 

If your instrument has either an O

2

 or CO

2

 sensor option installed these should be 

calibrated as well.   

06864B DCN6314