Procedure
1. Refer to Figure 116. Ensure a suitable zero air source is connected to the Calibration port.
Figure 116 – Zero Calibration Set-up - 1
2. Open - Main Menu → Calibration Menu.
3. Select - Cal. Type → Manual - Accept.
4. Select - Cal. Mode → Zero - Accept.
5. Select - Zero Source → External - Accept.
6. Allow the instrument time to achieve a stable response.
7. Enter - Zero Calibrate CO - (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 for 1.3 for definition)
Procedure
1. Refer to Figure 117. Ensure a suitable zero air source is connected to the Sample Port.
Figure 117 – Zero Calibration Set-up - 2
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