TELEDYNE API T200U NOy, Operator'S Manual

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Model T200U NOy Option Manual Addendum
07303E DCN7996 21
Table 4 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 performing only Span Cal Check, do not press ENTR,
press EXIT to avoid actually 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 are not added to the DAS averages.