Yokogawa Extractive Oxygen Gas Analyzer TDLS220 - Manual (Page 67)

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IM 11Y01B02-01E-A 4th Edition September 11, 2012-00
7.4.2 Off-Line Manual/Automatic Calibration
To perform off-line calibration, the TDLS220 flow cell is already capable of being validated/calibrated
in off-line mode. Using external switching valves or reconfigured tubing connections to allow the
introduction of appropriate calibration gases
1
With the appropriate user interface, go to either Basic Menu (to Check Zero or Span) or
Advanced Menu (to Check Zero or Span and/or perform actual Calibration).
2 Follow the detailed on-screen instructions
3
We do not recommend calibrating the Zero. If the Zero reading appear incorrect, then
ensure all data results and spectra have been stored and send the files to Yokogawa Laser
Analysis Division for further evaluation.
4
5
When an acceptable zero has been established, follow the on-screen instructions for
Span calibration. ENSURE all parameters are correct for the actual TDLS220 flow cell
conditions.