Yokogawa In-Situ Gas Analyzer TDLS200 - Manual (Page 105)

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IM 11Y01B01-01E-A 6th Edition :Feb 13, 2013-00
<8. VALIDATION AND CALIBRATION>
12 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).
13 Follow the detailed on-screen instructions when check the analyzer zero and/or checking the span
14 We do not recommend calibrating the Zero unless some core spare parts have been replaced (such
as laser module or FPGA board). If the Zero reading appears incorrect, then ensure all data results
and spectra have been stored and send the files to Yokogawa Laser Analysis Division for further
evaluation. Apply zero gas using the appropriate gas flow path as show: