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Model T200U-NOy Option Manual Addendum
07303C DCN6646 21
Table 5 Span Calibration Procedure
Step Action Comment
1. Press CAL The analyzer enters the calibrate mode.
2. Wait For Stability
Type STB < 2 PPB
Wait for reading to stabilize at span value.
3. Press SPAN If you change your mind after pressing SPAN, you can still
press EXIT here without spanning the instrument.
4. Press ENTR Pressing ENTR actually changes the calculation equations and
causes the instrument to read the NO and NOy span
concentrations.
5. Press EXIT The analyzer returns to sampling. Immediately after
calibration, data is not added to the DAS averages.