5.4.1 Calibration Port
Equipment Required
• Zero Air Source (refer to Section 1.3 for definition)
Procedure
1. Ensure a suitable zero air source is connected to the Calibration port.
Figure 107 – Zero Calibration Set-up - 1
2. Open - Main Menu → Calibration Menu.
3. Select - Cal. Type → Manual - Accept.
4. Select - Zero Source → External - Accept.
5. Select - Cal. Mode → Zero - Accept.
6. Allow the instrument time to achieve a stable response.
7. Enter - Zero Calibrate O3 - (read note) - OK.
8. Select - Cal. Mode → Measure - Accept (To return to sample measure).
5.4.2 Sample Port
Equipment Required
• Zero Air Source (refer to Section 1.3 for definition)
Note: Ensure the instrument has been running for at least one hour before any calibration is
performed to ensure sufficient stability.